Add an email signature in Apple Mail

macOS

1. 1

   Copy your signature with the Copy signature button.

2. 2

   In Mail, open Settings from the Mail menu, then choose the Signatures tab.

3. 3

   Pick the account on the left, then click + to create a signature.

4. 4

   Untick Always match my default message font — this step matters, or Mail will strip your formatting.

5. 5

   Select everything in the signature box and paste with Cmd+V.

6. 6

   Choose the signature from the Choose Signature dropdown for that account.