01Add a signature in Apple Mail
Open Mail › Settings (or Preferences) › Signatures
Select the email account in the left column
Click + to create a signature
Paste or type the signature in the preview pane
Drag the signature onto the account
Uncheck Place signature above quoted text if replies look wrong.
02Paste a designed signature
Copy rendered HTML from the generator preview and paste into the signature pane. Use hosted https images to avoid attachments on send. Preview in dark mode before you rely on logo colors.
FAQ
How do I add a signature in Apple Mail on Mac?+−
Open Mail › Settings › Signatures, select the account, click +, paste your signature, and drag it to the account list so Mail applies it when you send.
Can Apple Mail use HTML signatures?+−
Mail accepts rich pasted content more fully on Mac than on iPhone. Table-based signatures with inline styles and hosted images work best. iPhone Mail remains text-first.
Why does my logo arrive as an attachment?+−
Embedded clipboard images can attach on send. Rebuild with linked https images. See the images-as-attachments fix guide.
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