To set an email signature on iPhone, open Settings → Apps → Mail → Signature and enter your signature. The built-in field is plain text, so for a formatted signature with your photo and links, use the copy-paste workaround below. Here is both.
The basic, plain-text signature
- Open Settings on your iPhone.
- Scroll to Mail (on newer iOS it is under Apps → Mail).
- Tap Signature.
- Choose All Accounts or Per Account, then type your signature.
- Leave the screen, it saves automatically.
This gives you a simple text signature, which is fine for many people.
Keeping a formatted signature (workaround)
The signature field will hold formatting if you paste rich content into it:
- In the signature generator, build your signature and press Copy signature, or email it to yourself from a computer.
- On the iPhone, open that email, then press and hold to select the signature and tap Copy.
- Go to Settings → Mail → Signature, clear the field, then press and hold and tap Paste.
- The formatted signature, with its links, is retained even though the editor looks plain.
Send yourself a test email to confirm it looks right.
A note on images
Photos and logos load from a public web address, so make sure the image URL you used in the generator is publicly accessible. Some mobile setups display images less reliably than desktop, so a clean text-and-links signature is often the safest choice for phones.
To build yours, open the email signature generator.