We recommend that users in your organization use Gmail to review and manage spam messages they receive.
Use Gmail to manage spam messages
We recommend users in your organization manage spam with any of these Gmail apps:
- Gmail Android
- Gmail for iPad and iPhone
- Gmail web
Use these apps to identify and mark inbox messages as spam. This trains Gmail to mark similar messages as spam. You can also identify messages falsely marked as spam and move those messages to the inbox. This trains Gmail to identify similar messages as valid messages.
To let your users manage spam with Gmail web and mobile apps:
- Turn off the existing non-Gmail mailbox configuration so that users can open Gmail web and mobile apps.
- Turn off any mail delivery settings that route mail to an external mail server. Learn more about email routing and delivery settings.
- Instruct users in your organization to use Gmail to manage spam messages.
Learn what administrators can do when Gmail incorrectly marks some or all of your external incoming email as spam.
Although we recommend using Gmail to manage spam, one of these other methods might be more appropriate for your organization. These methods are intended for administrators only.
Route all mail to a legacy mail server
To improve spam identification, turn on spam and phishy headers in Gmail routing rules. If this setting is off, the legacy mail server might miss some spam messages.
Learn more about adding spam headers to routing rules.
Groups message moderation
Learn about message moderation in Groups.
Send messages to quarantine review
Learn how to set up and manage email quarantines.
Is mail delivery affected?
No. Although we’re changing the way users view and manage spam, we’re not changing the way valid emails are delivered to your users.
Can I continue to send mail through Gmail to my on-premises server?
Yes. You can continue to use Gmail for spam and antivirus filtering, and then route mail to an on-premises mail server.
Can I review spam with methods other than Gmail?
Yes. G Suite supports several ways for administrators to manage spam. However, we recommend that your users view and manage spam messages only with Gmail.
Can I use Gmail web and mobile apps as the spam quarantine only, so that messages marked "not-spam" are routed on-premise automatically?
No. This is not recommended and not supported. Messages marked as "not-spam" in Gmail web and mobile apps are put into the Gmail Inbox automatically. Routing rules to deliver messages on-premise are not triggered in this scenario.