Mail Policy

Limits

There is a 500 outgoing email hourly limit per domain. This limit is also applied towards Mailman. If you send over this amount in any hour, most of the emails will bounce back with an undeliverable error. If this occurs, it will then take some time for your account to be able to send again so we recommend waiting at least 1 hour after this issue occurs to begin sending email again.

Our servers have a limit of 30 POP3/IMAP checks per hour per IP address. If you go over this you're likely to get a wrong password error message or an error stating "login incorrect". If this occurs, please wait an hour and it will automatically unblock you. To prevent this from happening again, please make sure to disable auto checking or at least set it to something higher such as once every 10 minutes.

Mailing lists may not be larger than 5,000 addresses.

Note: Dividing one large list into smaller lists to get below this limit is not allowed.

There is also a limit to the number of Mailman mailing lists permitted as follows:

  • Bronze package: 1 Mailman mailing lists
  • Silver package: 2 Mailman mailing lists
  • Gold package: 3 Mailman mailing lists
  • Platinum package: 4 Mailman mailing lists

NOTE: This does not apply to other mailing list programs such as PHPList. This only applies to Mailman.

Mailing Lists Rules