What's New

16 Oct 2020

Hand out instant copies of a master document for every room member's desk

Need to make a copy of a document or send a copy to every other room member? There is now a faster and easier way to do so, without having to manually upload the same document multiple times. Simply click the Content Menu icon for the PDF/image file/sketch pad that you wish to make a copy of, and select either Duplicate or Hand out

  • Duplicate: This instantly creates a copy of the document within the same room view or desk in your room. Access the duplicate file [with a filename extension "(copy)"] from the same room or desk library.
  • Hand out: This instantly sends a copy of the document to other room members in their individual desks. You can choose to hand it out to all other room members' desks or specific members' desks only. Access the handout file [with a filename extension "(username)"] from the relevant desk library(ies). Note: you can hand out a file from the room view to the desk, and from the room host's desk to other room members' desk. But handing out a document from any desk to the room view is not possible.

10 Oct 2020

Faster access to your favourite editing tools with shortcut keys 

The new shortcut keys make switching editing tools in the midst of your annnotation, writing and drawing really convenient. Simply type the letter in the brackets of the pen, highlighter, shape, text input or move/delete selector tool that you wish to use.

9 Oct 2020

Bigger screen real estate for your content and more intuitive layout with brand new virtual room user interface 

Welcome to the brand new ClassDo virtual room user interface. Sporting a clean and contemporary look, it now offers a bigger display/work area for your content. We have also moved some features and icons around, as we re-organise related ones together. You'll find it easier to locate and access your favourite tools and settings, especially the more frequently used features. Take a quick orientation around your new virtual room below.

1. Manage members' microphone, camera and various video screens in one place

- Member's Name, Internet Strength Indicator, Mic/Camera On/Off, Maximise, Picture-in-picture

Mouse over any member's video to show his or her name. Click to manage his or her microphone and camera (if you have host permission). This is also where you can maximise his or her screens (video chat, screen share or visualiser), or set them as a always-on-top floating window (Picture-in-picture).

2. Ready access to Room Members settings

- Mute Microphone, Video On/Off, Room Members List, Videochat View

Need to mute your own microphone or turn off your own video quicky in the midst of a live collaboration? You can now do so with just a single click as we have moved these frequently used features up to the bottom centre of the virtual room screen. This central bar of icons is also where you can open the Room Members' List, to see who's already in the room and who is late or absent, and change the room view from Content to Videochat, if all your need is to talk to your collaborators without referring to any files.

3.  Edit all content settings from Content [...]

- Name, Allow Download, Download, Delete Content

All functions related to content files are now housed in the Content dialog box indicated by the " ..." icon on the top right corner of your content file.

4. All tools and room settings consolidated under Menu

- Screen Share, Visualiser, Second Device, Recording, Device Settings, Sync Modes

5. Access help in one place

- ClassDo Support live chat, Help Centre

We have relocated our ClassDo Support live chat from the bottom right corner to the top right corner of the virtual room. So, you can now reach either live support or our 24/7 online Help Centre repository from the same place more easily.

And last but not least, to exit the room, just hit the red/white phone icon to end your session.

1 Oct 2020

Desk: your new personal workspace in the virtual room, just like in the physical room

Always wanted to have your personal workspace in the virtual room, where you can write your personal copy of notes privately during live collaboration? Or perhaps you are in a team brainstorming or sprint session, and you need to jot down your ideas privately before you share with the rest of the team? If you are a teacher, maybe you want to assign an exercise to all your students to do during the lesson and be able to see what each student is writing on his virtual desk and to provide one-to-one coaching in real time, on-demand or where necessary. Or you wish to have your students submit homework to you privately without their individual work being visible to other classmates.

Just like how everyone in the office or classroom has his own workspace or desk to work on privately, all room members in any ClassDo virtual room now have their own individual Desks.

Simply toggle from Room (house icon) to Desk (desk icon), where the contents that you or your host have uploaded can only be seen and edited by the two of you, and not any other room member. Privacy assured!

If you are the host, you can access any of your room member's desk to check the work he has submitted to you, or look at what he is writing in real time. For teachers, especially, this is just like how you can walk right up to your student's desk in the classroom to provide personal coaching!

17 Sep 2020

Better host control of screen share/visualiser activation 

If you are a user assigned an organisation role that does not allow you to start live video collaboration on your own, you will now need to get approval from your room host before you can start screen share and visualiser livestreaming, Your host will receive a notification about your request on his screen. Once he approves, your screen share or visualiser livestream will automatically be displayed in a new tab on everyone's screen. 

16 Sep 2020

Screen share display upsized for a more immersive view

Here in ClassDo, we always recommend our users to take advantage of our file upload feature and unlimited cloud file storage, to upload files directly into the virtual room for your live collaboration. But, if you do need to screen share, the display size is now fully maximised in the virtual room for a clearer view.

15 Sep 2020

View screen share and visualiser video in sync at all times

Instead of appearing as a floating video, a screen share video or visualiser livestream is now displayed in tabs at the top of the virtual room screen, whenever a user turns it on. This helps to keep in sync all room members' view of the screen share/visualiser video at all times, unless the room interaction setting is in Disabled Sync mode. It also allows screen share videos and visualiser livestreams to be consistently captured in session recordings.

8 Sep 2020

Submit completed work online with a quick QR code scan

Done an assignment on hard copy and taken a photo on your smartphone? You can now easily submit your assignment into the virtual room using your mobile phone, without needing to log onto ClassDo again manually on your mobile phone. Simply scan a QR code with your mobile phone and select your file to upload from your phone gallery instantly!

2 Sep 2020

Smart Tabs: all your files in one Library - find them easily, open only the files you need

Bid goodbye to clicking on various tabs to look for a pdf or a sketchpad, and scouring through a long row of files to find that one document from a month ago....

...and say hello to ClassDo Smart Tabs!

Kickstarting the revamp of our virtual room, Smart Tabs makes accessing files easy and convenient. All your files - be it uploaded contents, sketchpads, typepads, videos, recordings, or polls - are now housed in one streamlined Library. Whenever you need to open an existing file or create/upload a new file, simply open a new tab, just like how you would do it when browsing the internet. Browse through your Library, just like how you would do it on Microsoft Office applications for instance.  

Use the search and filter functions to help you find the files you want to work on for that session, and call them out from the Library onto your deskspace in the virtual room. That's right! You'll only need to call out the specific files that are relevant to that particular Work with Others or Work on My Own session. Collaboration on multi-documents become more efficient with a neater virtual room deskpace!

Learn more at Smart Tabs FAQs.

23 Aug 2020

Switch webcam or microphone easily during live collaboration within the virtual room

If you have more than one webcam or microphone connected to your device, and your default webcam or microphone fails to work properly while you are in the midst of a live collaboration session, no need to fret! You don't have to exit the room to change your device settings, as you can now access and change your camera and microphone settings readily within the room with least disruption to the live session.

20 Aug 2020

Instant sign-up/login with your Google account

ClassDo is now Google login-enabled. Signing up for or logging onto your ClassDo account cannot get any easier!

7 Jul 2020

ClassDo now supports Microsoft Edge

You can now also use ClassDo on Microsoft Edge Version 81 (or above) for all devices or Microsoft Edge Version 45+ on Android. Check out other minimum system requirements for an awesome ClassDo experience.

25 June 2020

Existing organisation members are auto-detected when inviting

When inviting new room members, their names and roles will be automatically filled in if they are already organisation members, ensuring that no existing members get overwritten!

23 June 2020

Easier onboarding with Room Key invites for instant room access

Need to invite multiple persons to the same room? Besides sending invites manually to each person, you can now also allow new members to join an existing room effortlessly by sharing a room key with them! All they need to do is to click the Room Key link or enter the Room Key words you share with them to gain instant access to your room, simplifying the onboarding process for everyone. 

12 June 2020

Room name and mode shown in browser tab

With the virtual room name and mode of room entry displayed in the browser tab, you can enter different rooms under different modes at the same time, without having to worry about keeping track of which tab is which! You can also mouse over the tab to see the tab name in full.

28 May 2020

Sample rooms with beginner's guide for new organisations

New to ClassDo? Check out our short introductory video and beginner's guide to using ClassDo found in sample rooms that come with every new organisation that you create. Invite new members to these rooms and they can also access these resources to familiarise themselves with ClassDo.

19 May 2020

View organisation member contact details

It is now easier for organisation owners, as well as roles given the permission, to identify room members by the mobile number or email adddress linked to their user account. Simply view the contact details displayed below the members' names on the room members list, invite new members screen or on the edit organisation members page.

18 May 2020

A more polished look for the virtual room

Our virtual rooms have gotten a little facelift! Enjoy a more polished-looking virtual room interface as you collaborate on ClassDo.

5 May 2020

Faster and easier to invite members

With our improved invite members process, you can now send invites, especially to multiple persons, efficiently on the same screen.

24 Apr 2020

New, simpler one-click to enter room

Now you can enter the room in your desired mode in just a single click! To see the room members for the selected room, select the Members tab below the room name.

23 Apr 2020

Upload your user profile picture

You can now upload your own profile picture for your account! 

22 Apr 2020

Download originally uploaded content files directly from room

Want to send notes, reports or readings to the members of the room? Now, you can simply upload them into the room under Content and enable them to be downloaded! There is no need to send images or documents separately, making sure room members always have access to the content when they need it. 

15 Apr 2020

Remove members completely from organisation

Organisation owners can now remove members completely from the organisation for better privacy and security purposes. Removed members can no longer see it in the list of organisations that they are part of, nor be invited into a room in the organisation from the "Existing organisation members" list.

11 Apr 2020

Download content and sketchpads as image files

Want to save the annotations you've made on a document, or the drawings on the sketchpad on your own device for easier reference? You can now select parts of your documents under Content or your sketchpads to be downloaded as PNG image files!

10 Apr 2020

Selected default roles have permission to delete any files

If you have a default teacher, tutor, trainer and manager role, you now have greater control over their virtual room content! You can delete any files uploaded under Content, or any sketchpad/typepad/poll created, even if they were not uploaded or created by yourself. Organisation owners can also choose to add this new permission to any other existing role in their organisation under Settings > Manage Roles.

7 Apr 2020

Lock others' video and microphone settings during Presentation mode

As the meeting host or teacher, do you wish to have complete control over your room members' microphones and videos? Now you can, whenever you change the room setting to Presentation mode. Your room members won't be able to unmute themselves after you've muted them, nor turn off their video on their own during Presentation mode. So you can conduct live collaboration uninterrupted while maintaining eye contact with everyone.

4 Apr 2020

Add a second device to your live collaboration for touchscreen writing/drawing

With the Second Device feature, you can link up your live collaboration in the virtual room with the touchscreen of your mobile device (e.g. smartphone, iPad, Android tablet) and use it for drawing and writing in the same virtual room!

30 Mar 2020

Greater room control under Presentation Mode

As a meeting host, trainer or tutor, you can now deliver your presentation more smoothly and without interruptions under Presentation Mode. When the room is set to Presentation mode, members with student, staff or other non-admin roles can no longer upload or create new files, play or pause YouTube videos, copy and paste images, or switch on screen share or visualiser. 

17 Mar 2020

Cancel wrongly sent room invitations with ease

If you have accidentally invited the wrong phone number or email address, you can now cancel the room invitation after sending it, as long as the invitee has not signed up for or signed into ClassDo.

25 Feb 2020

Instant room invites are automatically accepted

You no longer have to manually check for room invites to accept them as they will be automatically accepted. Now, you will instantly see the rooms and organisations you have been invited to once you log in!

24 Feb 2020

Sign up/log in with email address and email verification code

You can now create an account and receive the verification code using your email address, if you do not want to use your mobile phone number or do not have access to a mobile phone. You can also log in with your email address directly if someone has sent an invite to you via email.

30 Jan 2020

Remain logged in to your account

There's no need to have your mobile phone with you to receive your one-time PIN every time you want to enter your virtual room on ClassDo. As long as you have not manually logged out of your ClassDo account, you can remain logged in on the same device, until you get prompted by the system to re-log in 30 days later.

23 Jan 2020

Instant virtual room solution via API integration

Get an instant virtual room solution for your learning portal or company website. With a one-click access to ClassDo's virtual rooms from via API integration, you and your an now create API Keys for a seamless ClassDo experience! 

22 Jan 2020

Rotate images under the Content tab

Have an image taken or uploaded in the wrong orientation? You can now  rotate images under the Content tab to make sure that you are always looking at things the right way.

11 Dec 2019

Use multiple devices for your live collaboration at the same time with new Device Management

Want to use a non-touchscreen device with bigger screen for videochat, but wish to use another touchscreen device concurrently to input your text and annotations into the same virtual room? You can now choose to enter a room on a primary device for live video collaboration, and enter the same room on a secondary device to upload and edit content at the same time, with our new Device management feature!

26 Nov 2019

Edit your user profile name

Update your user profile name easily from your personal settings menu, any time you need to.

22 Nov 2019

A better, more flexible way to edit and manage your members' roles

Made a mistake when assigning your members' roles or there is a change in your members' roles? You can now edit your members' roles in just a few simple steps!

18 Oct 2019

More prominent alerts on new Notifications Bar

Get alerted instantly on any system notification or new room invites received, right after you have logged into your ClassDo account.

You can also access your new room invite(s) directly from the new Notifications Bar with a click.

9 Oct 2019

Import images into your virtual room content

A picture is worth a thousand words! Learn how to import images into your virtual room!

20 Sep 2019

Rename your content files for easier retrieval

For Content tab and Sketch tab.

For Type tab.

For Poll tab.

Content files getting too messy? Do not worry as you can rename all your content files according to your preference in order to facilitate the retrieval process! This is applicable to all content files except for Polls.

17 Sep 2019

Access room usage fee details with breakdown, new search and filter functions

As the organisation owner, you can now obtain more details on your organisation members' room usage on the Billing page. View breakdown of every room's daily usage according to each room member's attendance. You can even filter and search usage data by room name or organisation member name.

14 Aug 2019

Update your room status

As a room admin, you can now provide a short description for your room to serve as room status or announcement to your room members, such as to inform them about when the next meeting or lesson is.

6 Aug 2019

Know who's online and in which room

With the new user status display on the Room Landing Page, you can now tell at a glance which room member is already in live collaboration in the room, and which member is in live collaboration in another room in the organisation. If there is no status displayed, it means that the room member is not in the room yet.

30 Jul 2019

Two-way anonymous poll for pop quiz, survey and Q&A

Make use of the new poll feature to engage your room members, get their feedback, elicit Q&As, or run a pop quiz to test your students' understanding. Choose from three answer formats for your poll question - multiple choice, check box, or text-based.

After the poll is closed, the user who created the poll will be able to see the results of the poll on his or her screen.

22 Jul 2019

ClassDo Chat (beta version)

Leave messages for your room members on ClassDo Chat. In this beta version, use the 'Attach' function in this pre-room chat to upload and share files into the virtual room with one another without having to enter the room. This makes tasks like distributing pre-meeting reading materials and submitting completed homework a breeze!

Word, Excel, PowerPoint, PDFs, .jpeg and .png files are all feasible. File attachments in the chat will automatically be synced with and appear under the Content tab inside the virtual room.

20 Jul 2019

Never run out of usage credits with Auto Top-Up

With the new Auto Top-Up feature, you can enjoy smooth, disruption-free virtual collaboration with peace of mind every time. 

No need to keep checking your usage credits balance and topping it up manually any more!

18 Jul 2019

See other room members' internet signal strength

In addition to being able to get an indication of the strength of your own internet connection, you can now also do the same for your other room members' internet connections. Simply mouse over their videoscreens to display the internet signal strength indicator next to their names.

16 Jul 2019

Easier way to add room admin rights to user

Need to assign another room member to become a second meeting host, trainer or teacher of a virtual room, so that he or she will have the same room admin rights as you, the room creator/owner? Now you can do it conveniently from the Organisation  Rooms  Members page, without having to enter the virtual room itself.

8 Jul 2019

Upload, revise and review your documents privately in the new Library mode

As a room member, you can now enter the room via the new "View Library" feature to access your collaboration or learning materials privately, any time you want, without needing your room admin (i.e. meeting host, trainer or teacher) to be in the room with you. 

Best of all, everyone belonging to the same room can access the materials concurrently but privately as videochat is disabled in the Library mode. So you can read, review, annotate, type, sketch and upload documents in the Library mode without worrying about accidentally 'bumping' into your co-learners or co-workers! All changes and additions you make to the resources in the Library mode are autosaved, so that you can always access the most updated versions when you resume live collaboration.

If you enter a room for a live collaboration session earlier and your room admin is not in yet, you will be redirected to the Library mode where you can read your materials while waiting for the room admin to enter the room.

When your room admin enters the room while you are in the Library mode, you will be prompted with a message in a pop-up dialog box as to whether you wish to switch to 'Live Collaboration' or remain in the Library mode for your personal revision.

1 Jul 2019

New billing and payment user interface

One-stop page for organisation admins to check your organisation account's usage credits balance, top up credits, monitor usage charges and see payment/top-up history.

26 Apr 2019

Brand new, contemporary-looking user interface

Desktop/laptop interface:

Mobile interface:

Find the organisations and rooms you belong to easily in a clean-looking user interface (UI).

24 Apr 2019

Test your device easily with our built-in Device Checker tool

Not sure if your device is all good to go for you to start collaborating on ClassDo? Simply launch our built-in Device Checked by clicking on "Start Live Collaboration" in your virtual room welcome page, or activating 'Test your device' under your personal settings (right panel). You will be guided step-by-step to test your browser version, webcam, microphone and speaker in a matter of seconds.

If anything does not seem to be working properly, you can also access useful troubleshooting tips within the Device Checker.

10 Apr 2019

DIY create your organisation, upload logo, edit organisation name/logo

You can now create your own organisation and upload your organisation logo by yourself. Need to change the name or logo subsequently? You can also do this easily under Organisation Settings.

8 Apr 2019

Rename Typepad files

Now you can rename each Typepad files as you wish. This makes it easier for you to locate the relevant file you need for review or revision, in the Typepad list at the bottom of your virtual room.

5 April 2019

Organisation and room names on every room

Always know exactly which virtual room you are collaborating in.

3 Apr 2019

Absentees' videos hidden for a cleaner user interface

Only the videos of those who are in live collaboration in the room are shown. To see who has not entered the room into live collaboration yet, click on "Show Absentees".

1 Apr 2019

Assign multiple room admins

If you are a room admin, you can now appoint another room member to be your covering or co-trainer, co-teacher, or co-meeting host and he or she will have the same admin rights as yourself. Just go to Tools -> Assign Room Members Roles.

Room admins have exclusive rights to activate certain features, such as recording, quick invite, muting others' audio, and switching between interaction modes.

29 Mar 2019

See room member's name, internet signal on videoscreen

Mouse over any user's videoscreen to display his or her name. This is particularly useful for identifying participants readily in a big group collaboration.

You can also check the strength of your own internet connection with the internet signal strength indicator shown next to your name.

26 Mar 2019

Switch your virtual room to fullscreen with a click

Expand your virtual room screen to fill up the entirety of your device screen with just one easy click. You'll enjoy an optimal visual experience where your screen space is not cluttered by menu bars and icons.

To restore the normal screen size, simply click on "Fullscreen" again.

22 Mar 2019

Identify active speaker easily

Never have to guess who's speaking when. The videoscreen of the active speaker of the moment will be outlined in green and moved dynamically right to the top of the room members' videoscreens.

18 Mar 2019

Turn off video

Getting fuzzy videostreaming due to weak internet connection? You can choose to mouse over your videoscreen and turn off your own video to save bandwidth for optimising your audio. You can also activate this feature when you wish to collaborate without showing your face.

If you are a room admin, you can also turn off the video of other room members.

11 Mar 2019

Mute audio

Taking part in a collaboration session in a noisy environment? You can now mute your own audio by mousing over your videoscreen and clicking on the microphone icon. Your videoscreen will become outlined in red to indicate that 'mute' is on. Click on the same icon to unmute yourself.

If you are a room admin, you can also mute and unmute other room members' audio by mousing over their videoscreens.

8 Mar 2019

Disallow content-editing by other room members in Presentation mode

As the room admin, when you turn on the Presentation mode (one way sync), you get to control what everyone sees in the room, and other room members are not allowed to switch screens. With this enhancement, other room members will also not be allowed to edit and annotate on the content.

Better control, more efficient collaboration.

Note: only room admins can change interaction modes between Collaboration/Presentation, Enable Sync/Disable Sync.

4 Mar 2019

Show screenshare/visualiser video instantly

Turn on your screenshare or visualiser, and everyone else can see what you are looking at instantly in an expanded video in the centre of his or her own screen.

22 Jan 2019

Keep selected video always visible on top with 'Picture in Picture' feature

You can now view an uploaded document together with screenshared video, or view someone in a group session more clearly.

Mouse over any room member's video or screenshare/visualiser video that you want prominently displayed on top of other underlying content on your screen, and click on the "Picture in Picture" icon. Your selected video will be duplicated in a bigger pop-up videoscreen, which you can move around and even resize as you wish. Even when you switch between Content/Sketch/Type tabs or files, your selected video will always appear 'floating' on top.

15 Jan 2019

Faces always stay visible

All room members' videoscreens are always visible throughout the virtual collaboration, whether you are screensharing or editing.

10 Jan 2019

ClassDo on mobile: Collaborate on-the-go

Effective virtual teaching, learning and collaboration are now possible for those who are always on the move, via ClassDo on mobile. You can upload photos and documents, read and annotate on content in sync, draw and type in sync, submit and mark homework, etc. on ClassDo Mobile, just like you do on desktops and laptops. No download required; just launch on Chrome and Safari browser as usual.

2 Jan 2019

Record your collaboration sessions in HD video/audio

If you are a room admin, you can now choose to record any part of your collaboration session. Unique to ClassDo, our recording feature captures the full interactions of the session, in exactly the same way as you view it on your screen during the session. This means that you will be able to see everyone as well as the content collaboration process in the recorded video.

You can also readily access the recorded videos (stored on ClassDo cloud), download and disseminate them to your room members in any way as you like it!

Turn on recording at Tools -> Recording.

Note: only room admins can turn on recording.

28 Dec 2018

Enhanced collaborative Typepad

Each room member can change the font type, size and colour of what he or she types. This helps to better distinguish the content created by different room members.

29 Nov 2018

Enhanced editing tools for Content and Sketchpad

More creative virtual collaboration made easy with: - a boost from four to 16 colours for pen, highlighter, line, shapes and text - flexibility to change line thickness and text size - ability to move and delete lines, shapes and text - ability to amend one another's typed text in the textbox directly.

26 Sep 2018

Your online classroom now runs on Safari too!

All supported devices: - online classroom: now runs on Windows PCs, Apple Macs, most large-screen Android tablets, Google Chromebooks, Microsoft Surface Pro - visualiser: now runs on Android and iPhones.

All supported browsers: Google Chrome or Safari

17 May 2018

Three types of screen synchronisation

  1. Sync off mode (no sync): This is when you want students to do their work individually, thus every person in the room are looking at different screens.
  2. Presentation mode (one way sync) : Only the room owner (teacher) gets to control what everyone sees in the room. The students are not allowed to switch screens.

  3. Collaboration mode (multi-way sync) : Everyone in the room is allowed to switch screens, and it will be synced across so that everyone is seeing the same thing.

10 May 2018

Deleting contents, tabs... etc

You can now delete any documents you have uploaded. Typepads and Sketchpads that you have created can also be deleted.

Note that however, you can only delete what you have created. In the same classroom, if the content was uploaded by someone else, or if the sketch/textpad is created by another person, you cannot delete them.

30 Apr 2018

Undo and redo for Sketchpads/annotations

While you're drawing shapes on books or the Sketchpad, oftentimes you need to undo/redo what you've done. You can do so right now.

23 Apr 2018

Management features for organisations

For each person you invite into your organizations, you can now choose whether they have the following privileges :

  • "administrator" (can invite others into the organization)
  • "create a room"
  • "invite to room"

18 Apr 2018

Your own logo and branding

For example, "Love to Learn"

If you would like to use your own logo and branding in your own online classroom, please let us know.

30 Mar 2018

Take a mobile photo and send to classroom

Now you can scan any papers/books directly from your mobile into the classroom.

29 Mar 2018

Screen sharing

Everyone can share their screens at the same time, no need to unshare before allowing someone else to share.

22 Mar 2018

Send live video from mobile to classroom

This is very useful when you want to show everybody what you're writing on paper.

19 Mar 2018

Annotate on uploaded books/documents

You can now write or draw on the documents you have uploaded.

13 Mar 2018

New document viewer with touchscreen support

New document viewer, with page swipe support for touchscreens.

1 Mar 2018

Detailed teaching history

No more admin. You can bill your students easily. For the past month, you can see how long you spent in each room, with whom, and for what duration.

What can you do with your online classroom?

Please have a look at some ideas :

14 creative things you can do with your online classroom


We're happy to help! Please contact us via the chatbox on https://ClassDo.com , or send us an email at support@classdo.com

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