Help
Email signature help.
Last updated November 8, 2026. Written by Email Signature Gen.
Copy your signature with the copy button, then paste it into your mail app's signature settings. The guides below give the steps for Gmail, Outlook and Apple Mail, and the fixes for the problems people hit most.
Install
- GmailOn the web: Settings, then See all settings. Paste into the Signature box, pick it under Signature defaults, then Save Changes.
- OutlookNew Outlook and Outlook on the web: Settings > Accounts > Signatures. Classic Outlook: File > Options > Mail > Signatures.
- Apple MailOn a Mac: Mail > Settings > Signatures. Turn off “Always match my default message font” before you paste.
Using another mail app? Open its signature settings, paste the universal version, save, and send yourself an email to check it.
Fix a problem
- Outlook signature images not showingClassic Outlook blocks picture downloads by default. The reader allows them, or the sender fixes how the picture is sent.
- Gmail signature image not showingThe picture's address usually isn't public. Then check plain text mode, the reader's image setting and trimmed replies.
- Email signature logo showing as attachmentThe logo travels inside the message instead of being linked, often in plain text. Link it from a public address and send HTML.
- Gmail signature too longGmail allows 10,000 characters, and images count. Our measured length for each layout, and how to shorten a signature.
- How to host an image for an email signatureThe image needs a public HTTPS address that doesn't expire: your website, a public cloud link, or a signature host.
- The signature on a phoneSet it up on the web or on a computer. Phone mail apps take a text signature of their own.
- A change doesn't show upText, layout, photo and logo changes need a paste again. Banners don't.
- An old email shows a new bannerA banner loads when the message is opened, so old emails show the current one.
More answers are in the FAQ. Still stuck? Email support@emailsignaturegen.com.