Create an E-mail Signature in Apple Mail (Mac)

Creating an automatic signature, with or without a picture, in the Mail app on iMac, MacBook Pro or MacBook Air is easy:

1. Open the Mail app.
2. Choose Mail > Settings (Preferences on older macOS) and click Signatures.
3. Select your e-mail account in the left column and click the + button.
4. Give the signature a name and type your signature in the right-hand area. To add a logo, drag the image file into the signature.
5. Use the Choose Signature menu to select the signature that is added automatically to new messages.