Is there any way to send an email from a Gmail plus address?

Question

I know that I can sign up to a service using user+foo@example.com, the question I have is how can I send an email from this same address?

Answer 1

Yes. Add it the same way you'd add any other email to send from:

1. Click on Settings in the upper right.
2. Click on Accounts and Import.
3. In the "Send mail as" section click "Send mail from another address".
4. Add the "plus email" and finish the setup.
5. Compose an email and select the custom "plus email" in the From dropdown.

Answer 2

It is officially not supported but there is a workaround using the "send mail as"-feature:

You need to go to the Settings tab and click Accounts and Import. Click there Sent mail from another address and enter your plus e-mail address. Click Next Step and the plus mail address is ready for use. You need to do this for every address you want to use.