What is sub-addressing?

Mailbox supports the so-called sub-addressing / mail tagging / plus-addressing (according to RFC 5233) in e-mail addresses.

Thereby specially formed e-mail addresses can be used, which automatically trigger pre-configured actions when messages are received.

An example:

Your actual email address is peter@mydomain.com. You can now log into Facebook and enter the email address peter+facebook@mydomain.com there.

Any email message to this address will be received normally in your mailbox peter@mydomain.com and will automatically trigger the action you set for subaddresses.

Available actions for subaddresses:

1. move this message to a subfolder facebook (will be created if not existing).

2. prefix the subject with the tag: ("[facebook] subject")

You can use sub-addresses quite spontaneously without any setup. Only the action has to be set and is valid for all sub-addresses the same.

See also:
Mailix documentation: Set action for sub-addresses