How to reply from catch-all addresses on Google Workspace (G Suite)
Warning: This method requires to have the paid version of Google Workspace. And you probably shouldn't have other users in your Google Workspace while using this.
On the Google Admin Console, go to Apps -> Google Workspace -> Gmail.
Go to Advanced Settings on the bottom of the Gmail page.
On the Gmail Advanced Settings page, scroll down to the Routing settings group. Or...
...find the SMTP relay service.
Configure an SMTP relay service to have the settings:
- Allowed senders:
Only addresses in my domains - Authentication:
Require SMTP authenticationchecked - Encryption:
Require TLS encryptionchecked
Save the settings and now you can set up the SMTP settings on your email client:
- SMTP Server Address:
smtp-relay.gmail.com - SMTP Server Port:
587for STARTTLS,465for SSL/TLS - SMTP Username: Your Google Workspace account address (with your domain as well, like
an@example.com) - SMTP Password: Your Google Workspace account password
And done! You can now reply from any other name under your domain.