TSO offers a Mailman mailing list service to manage e-mail lists that end in @cc.gatech.edu. To use the service and ensure a successful user experience, all subscribers and list owners are required to do the following:

  • Login to mailman.cc.gatech.edu
  • Enter your email aliases
  • Configure your list settings
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Logging in to Mailman

  • Navigate to mailman.cc.gatech.edu.
  • Click 'Sign In' in the top right of the main Mailman webpage.
  • On the login page, click the 'GT LOGIN' button.
  • Log in using your GT username and password.
  • Success! You should see the lists you are subscribed to, as well as those you own/administer or moderate. If you don't...
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Entering/Managing your email aliases

An additional benefit of the upgrade is the ability to see all your mailing lists in one place, regardless of which email alias is subscribed. To do so:

  • After logging in to mailman.cc.gatech.edu, open the user account menu in the top right and select 'Account'.

  • Select the 'E-mail Addresses' tab along the top.
  • On this page, use the 'Add E-mail Address' field to add any other email aliases that you have used for mailing lists (i.e. gburdell@cc.gatech.edu or george.burdell@cc.gatech.edu).
  • An email will be sent to each alias to verify ownership.
  • After this process is complete, you will see the personalized selection of all lists that you are subscribed to or own/administer when you log in in the future.
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What lists am I subscribed to?

  • Navigate to mailman.cc.gatech.edu.
  • This page contains all the mailing lists you are associated with.
  • Click 'Member' to see the lists you are a subscriber to. 

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What lists do I own or moderate?

  • Navigate to mailman.cc.gatech.edu.
  • This page contains all the mailing lists you are associated with.
  • Click 'Owner' to see the lists you are an owner for, and 'Moderator' to see the lists you are a moderator for.

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Requesting a new list

To request a new mailing list, use the 'Get Help' form and provide the following required information.

  • A list name indicative of its purpose
  • Two CoC Employees who will be the owner/co-owner of the list
  • Any additional CoC employees who should be moderators of the list
  • How long the list will need to be in service (if known)

Please be aware that the mailing list archives will not be active by default as secure information may be shared through the list and could unintentionally end up in the archives, creating a potential security risk. 
 

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Managing lists

Managing list users

  • Log into mailman.cc.gatech.edu
  • Select the list whose users you want to manage
  • Along the top of the page select the group of users that you want to manage
  • Owners

    • Add additional owners by filling out the fields, and clicking 'Add owner'

    • Delete by finding the address that you want to remove, and click the 'Delete' button
  • Moderators

    • Add moderators by filling out the fields, and clicking 'Add moderator'

    • Delete by finding the address that you want to remove, and click the 'Delete' button
  • Members
    • Add members by selecting Mass Subscribe in the Mass Operations menu
      • Put the addresses of those you want to add, one per line, in the input box
      • Select the appropriate options as needed with the checkboxes
        • Pre-Verfied, Pre-Approved, and Pre-Confirm are strongly recommended
      • Click the 'Subscribe users' button
    • Remove members by selecting Mass Unsubscribe in the Mass Operations menu
      • Again, put the addresses one per line of those that you want to remove in the input box
      • Click on the Remove listed users button
    • Modify a member's default delivery mode or moderation action
      • Select Members from the Users dropdown
      • Search to find the member that you want to modify, and click on their address
      • Modify options as needed, then click the 'Save changes' button
  • Non-members
    • Add Non-Members
      • Select Non-Members from the Users dropdown
      • Fill out the input boxes, and click the 'Add nonmember' button
    • Remove Non-Members
      • Search to find the address of the member you want delete, then click the Delete button next to their address
    • Modify a Non-Members default delivery mode or moderation action
      • Select Non-Members from the Users dropdown
      • Search to find the non-member that you want to modify, and click on their address
      • Modify options as needed, then click the 'Save changes' button

Setting attachment size

  • Log into mailman.cc.gatech.edu

  • Select the list you want to manage

    Select 'Settings' from the menu, then 'Message Acceptance'

 

  • 'Maximum message size' allows you to set limis to prevent emails with large attachments. For lists needing attachments, we suggest setting this field to '20480'. This sets the limit to 20 megabytes, which should allow for standard size documents and photos.

 

Setting your lists 'default actions'

As list owner, you can set a 'default action' for emails sent by list members, and list non-members. Here are the choices and brief explanations -
Hold: This holds the message for approval by the list moderators.
Reject: this automatically rejects the message by sending a bounce notice to the post's author. The text of the bounce notice can be configured by you.
Discard: this simply discards the message, with no notice sent to the post's author.
Accept: accepts any postings without any further checks.
Default Processing: run additional checks and accept the message.

To change these settings:

  • Log into mailman.cc.gatech.edu

  • Select the list you want to manage

    Select 'Settings' from the menu, then 'Message Acceptance'

  • Change 'Default action to take when a member posts to the list' or 'Default action to take when a non-member posts to the list' as needed. We suggest 'Default processing' for list members, and 'Hold for moderation' for non-members for most list types.

 

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What should I do after the migration from Mailman 2 to Mailman 3?

TSO upgraded the College from Mailman 2 to Mailman 3 on March 14th, 2026. With the differences in configuration, automatic message acceptance and rejection settings may not have been brought over to your list. This provides a good opportunity for list owners to double check a few configuration options:

  • Using the 'Managing list users' instructions above, look through your list's Members for any users that should be accepted automatically. You may also find addresses that can be removed entirely.
  • Similarly, look through your list's Non-Members and make sure any automatic acceptance or rejection is in place as expected.
  • TSO suggests that all lists have at least 2 Owners. Please follow the 'Managing list users' instructions to add additional Owners as necessary.
  • For lists with lots of traffic, Moderators may be useful for releasing held messages. Using the 'Managing list users' instructions, add or remove any Moderators for your list.
  • Look at your list's 'default actions' and make changes as necessary. Instructions and descriptions of the actions can be found above - Setting your lists 'default actions'. Some best practices:
    • Announcement lists should have both member and non-member posts set to 'Hold for moderation'.
    • Discussion lists should have member posts set to 'Default processing'. Non-member can stay as 'Hold for moderation'.
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