Mail.app: How can I set a different default signature for each address? I have my Gmail account setup in Mail 6.2 (Mountain Lion). From that account I can send mail with one of five different addresses (4 other accounts forwarding onto Gmail). Is there a way I can set up a different default signature for each address, rather than a single default signature for all addresses?

I have 5 addresses and 5 signatures, I just can't link them together.
1) Open Settings (Cmd + ,), click signatures. You will see a list of email accounts on the right.



2) Click the one you want to set a default signature to. Click the + button below the signatures.



3) Add you signature.

If you have more than one signature, select your preferred default on from the drop down menu below the signatures.