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how to add email signature in apple mail
How to add an email signature in Apple Mail
Apple Mail's signature box is easy to find. What quietly defeats people is the account assignment and one font checkbox that strips a pasted signature. This guide covers how to add an email signature in Apple Mail on a Mac, the two traps that make it look broken, and the separate iPhone and iPad signature.
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TL;DR
In Mail on a Mac, go to Mail → Settings → Signatures, select the email account in the left column, click the add (+) button, name the signature, and paste or build it in the right column. Then turn off "Always match my default message font when using this signature" so a pasted signature keeps its formatting. It takes under two minutes.
How to add an email signature in Apple Mail on Mac
These steps follow Apple's official Mail User Guide , so the labels match what you see on screen.
- Open Mail settings In the Mail app on your Mac, choose Mail in the menu bar, then Settings (older versions say Preferences), then click the Signatures tab.
- Select the email account In the left column, select the email account this signature is for. Avoid "All Signatures" for now; see the trap below.
- Add a signature Click the add (+) button below the middle column and type a name for the signature. The name appears in the signature menu when you compose.
- Create the signature In the right column, type or paste your signature. Use the Format menu for fonts and color, and add an image by dragging it into the preview area.
- Turn off font matching Deselect "Always match my default message font when using this signature" so a pasted signature keeps its own formatting.
- Set it as the account default Use the "Choose Signature" pop-up menu for the account to pick this signature for new messages.
- Send a test Compose a new message and confirm the signature appears and renders correctly, including any image.
The "All Signatures" trap
This is the reason most people think Apple Mail signatures are broken. Apple's documentation states it plainly: if "All Signatures" is selected when you create a signature, you have to drag the new signature onto a specific email account before you can use it.
So a signature you just made will not appear in the compose menu until it is assigned to an account. The fix: in Mail → Settings → Signatures, drag the signature from the All Signatures list onto the account name in the left column. Creating it with the account already selected, as in the steps above, avoids the problem entirely.
How to paste an HTML signature into Apple Mail
Copy the rendered signature — the visual output, not the code — and paste it into the right column of the Signatures settings. Pasting raw HTML shows the tags as text.
Then turn off the trap: deselect "Always match my default message font when using this signature." Left on, it forces your signature into Mail's default font and strips a pasted design. This single checkbox is the most common Apple Mail signature complaint.
The reliable source for that rendered output is an editor that exports a Mail-safe signature. You can open the editor, customize one of the email signature templates, copy the result, and paste it with font matching off. Host the image at a public URL so it does not break for recipients.
How to add a signature in Mail on iPhone and iPad
The iOS signature is not in the Mail app; it is in the Settings app. Open Settings, tap Mail, then tap Signature. Choose All Accounts for one shared signature, or Per Account to set a different one for each mailbox, then enter your text.
The iPhone and iPad signature is plain text only. It will not carry an image or the formatting of a Mac HTML signature, and it does not sync from macOS. Keep the phone version short — name, role, company, one contact line — so replies sent from your phone still look deliberate.
Common Apple Mail signature problems
Most failures trace back to four things:
- Not in the menu: the signature was made under All Signatures and never dragged onto an account.
- Formatting stripped: "Always match my default message font" was left checked.
- Broken image: a local file was dragged in instead of a hosted, public image URL.
- Nothing on the phone: the iOS signature is separate, plain-text, and set in Settings → Mail.
Using Gmail or Outlook too? The Gmail signature guide and the Outlook signature guide cover the equivalent steps there.
Key takeaways
- Mac: Mail → Settings → Signatures → select the account → add (+) → build it → set the account default.
- Create the signature with the account selected, or drag it from All Signatures onto the account, or it will not appear.
- Turn off "Always match my default message font" or a pasted signature loses its formatting.
- The iPhone and iPad signature is separate, plain text, and set in Settings → Mail → Signature.
Build a Mail-ready signature
The editor exports a signature that pastes cleanly into Apple Mail, with the image hosted so nothing breaks for the recipient.
Build your signatureQuestions about adding an email signature in Apple Mail
How do I add an email signature in Apple Mail?
In Mail on a Mac, go to Mail → Settings → Signatures, select the account in the left column, click the add button, name the signature, and edit it in the right column. On iPhone or iPad, use Settings → Mail → Signature instead.
Why is my Apple Mail signature not showing up?
Usually the signature was created under "All Signatures" and never assigned to an account. Apple requires you to drag it from the All Signatures list onto a specific email account in the left column before it becomes selectable when composing.
Why does my Apple Mail signature lose its formatting?
Because "Always match my default message font when using this signature" is checked. That option forces your signature into the default font and strips a pasted HTML signature. Uncheck it in Mail → Settings → Signatures and re-paste.
How do I paste an HTML signature into Apple Mail?
Copy the rendered signature, not the code, from your generator. In Mail → Settings → Signatures, select the account, add a signature, then paste into the right column with the font-match option turned off so the formatting survives.
How do I add an email signature on iPhone or iPad?
Open the Settings app, tap Mail, then Signature. Choose All Accounts or Per Account and enter your text. The iOS Mail signature is plain text only: it will not carry images or the formatting from a Mac HTML signature.
Can I use different signatures for different accounts in Apple Mail?
Yes. In Mail → Settings → Signatures the left column lists each account. Assign a signature to each, and set the "Choose Signature" pop-up per account so the right one is used automatically.
Why are images broken in my Apple Mail signature?
The image is not hosted. Dragging a local file into the signature can work on your own Mac but breaks for recipients. Use an image hosted at a stable public URL so it renders in every inbox.
Where do I find signature settings in Apple Mail?
On macOS: the Mail menu → Settings (older versions say Preferences) → the Signatures tab. On iOS and iPadOS it is not in the Mail app at all — it is in the Settings app under Mail → Signature.
Should my Apple Mail signature go above or below quoted text?
For replies, above the quoted text is usually clearer. Apple Mail controls this with the "Place signature above quoted text" checkbox in Signatures settings; leave it on unless your team prefers bottom-posting.
Does an Apple Mail HTML signature sync to my iPhone?
No. macOS and iOS Mail signatures are separate, and the iOS one is plain text. Set a short plain-text signature on the phone directly; do not expect the Mac HTML signature to appear there.