Fan out one incoming message to a whole team — straight through Postfix, with no SMTP re-injection. Group deliveries never count against the sender's hourly mail limit.
Plesk mail forwarding and mailing lists re-send each message over SMTP, so every fan-out is billed against the sender's outgoing limit. Mail Groups expands recipients during delivery instead.
| Method | How it delivers | Counts against outgoing limit? |
|---|---|---|
| Plesk forwarding | Re-injects via SMTP | Yes |
| Plesk mailing list | Re-injects via SMTP | Yes |
| Mail Groups | Expanded during delivery | No |
Create and manage every distribution group from a clean Plesk interface.
Create, edit and delete distribution groups and members in a clean Plesk UI.
Messages are expanded during delivery, invisible to the SMTP send counter.
Every change is validated and applied atomically, with automatic backups.
Guards against the classic mistake of a group that lists its own address.
Server-wide mail configuration stays where it belongs — with administrators.
The extension checks for new releases and shows the one-line upgrade command.
Three moving parts, all handled for you.
Pick an address on one of your domains and list the recipients — local or external.
Incoming mail to the group address is rewritten to all members during delivery, not re-sent.
Everyone gets the message and the sender's outgoing counter stays untouched.
Start free. Upgrade when you need more than one group.
Upload through Plesk, or from the command line.
Plesk counts messages that a mailbox sends over authenticated SMTP. Mail Groups doesn't send anything — the mail server rewrites the single incoming message to every member during delivery, so there is no new SMTP send to count.
Yes. Mail Groups keeps its own dedicated recipient map, separate from the rest of your mail configuration. Every change is validated and applied atomically, and the previous state is backed up automatically. Uninstalling the extension removes its groups cleanly.
Yes. A member can be any mailbox on the server or any external address. The group address itself must be on a domain hosted on the server.
The extension checks this site for new releases and shows a one-line
plesk bin extension --upgrade-url command when an update is available.
Plesk Obsidian 18.0 and newer, on Linux with Postfix as the mail server.