We do not recommend using the Mailing List tool (Mailman) in cPanel because that tool cannot throttle.
To send more than 500 emails, you must use a mailing program which can throttle emails. We recommend phpList which can be found in QuickInstall within the cPanel.
For more information on how to use phpList, please visit our peer support forum:
Mailing List Limits
There is also a limit to the number of Mailman mailing lists permitted as follows:
- Hatchling plan: 20 Mailman mailing lists
- Baby plan: 25 Mailman mailing lists
- Business plan: 50 Mailman mailing lists
- Reseller and Dedicated plans: Unlimited Mailman mailing lists
The Mailing List tool can be found in the Mail section of cPanel. To use the tool, click the Mailing List icon and follow the setup instructions (as the default program is Mailman).
For additional Mailman support, please visit http://www.list.org/