How to add an email signature in Apple Mail

Mail on your Mac

1. 01In Mail, choose Mail, then Settings, then click Signatures.
2. 02Select your email account in the left column.
3. 03Choose + below the middle column and type a name for the signature.
4. 04Untick “Always match my default message font”, so the signature keeps its own fonts instead of your default message font.
5. 05Click into the right-hand column, select what's there (⌘A) and paste (⌘V).
6. 06Pick the signature in the Choose Signature menu, so new messages from that account include it.

Tick “Place signature above quoted text” to keep it above the message you're replying to. With Mail turned on in iCloud Drive's options, your signatures reach your other Macs too.

Mail on iPhone and iPad

Apple says Mail signatures on iPhone and iPad can only be text, so a design may not keep every detail here. esigna opens your signature on the phone, ready to copy, and the plain-text version is there if the design doesn't hold.

1. 01In esigna, choose Copy signature, then iPhone, and scan the code with your iPhone's camera. On the iPhone itself, tap Open on this iPhone instead.
2. 02On the page that opens, tap Copy signature.
3. 03If your iPhone is in Dark Mode, turn it off while you paste: open Control Center, touch and hold the brightness bar and tap Dark Mode. In Settings it's under Appearance on iOS 27, and Display & Brightness on iOS 26 and earlier. Pasted in Dark Mode, the words turn white for the people you email. Switch back after if you like: they look dark in a new email on the iPhone, but arrive as you made them.
4. 04Open the Settings app, tap Apps, then Mail.
5. 05Tap Signature, under Composing. With more than one account, tap Per Account.
6. 06Press and hold in the text field, tap Select All, then tap the delete key, so nothing of the old signature is left. Then paste.
7. 07Right after pasting, shake the iPhone. When Undo Change Attributes appears, tap Undo. Mail sets a pasted signature in its own fonts, sizes and colors, and Undo brings back the signature's own. If nothing appears when you shake, turn on Settings, Accessibility, Touch, Shake to Undo, then paste and shake again.
8. 08Send yourself an email to check it.

Apple documents Shake to Undo but not that it keeps a pasted design. esigna tested it on an iPhone in October 2026, and the signature arrived as made in Gmail on the web and in the Gmail app. If the design doesn't hold, choose Plain text in the Copy window instead, email it to yourself and copy it from that email.

The full iPhone guide, with “Sent from my iPhone” and the Gmail and Outlook apps

iCloud Mail on the web

Apple describes the signature on iCloud.com as plain text, so use esigna's plain-text version here too.

1. 01Go to icloud.com/mail and sign in.
2. 02Choose the Settings button at the top of the Mailboxes list, then Settings.
3. 03Choose Composing, scroll down, tick “Add a signature”, and paste the plain-text version.