Email signature setup guides
Your signature is made once and pasted into each email app you use. Pick yours for the exact steps on the web, on a computer and on your phone.
Checked against each client’s help pages on September 24, 2026.
How to add an email signature in Gmail
Gmail on the web · Changing it later · The Gmail app on Android and iPhone
How to add an email signature in Outlook
New Outlook and Outlook on the web · Classic Outlook for Windows · Outlook for Mac · The Outlook app on iPhone and Android
How to add an email signature in Apple Mail
Mail on your Mac · Mail on iPhone and iPad · iCloud Mail on the web
Before you start
Copy your signature first
Make it in esigna’s free Editor and choose Copy signature (on a template page, Copy HTML). That puts the finished design on your clipboard as formatted text, so every step in these guides is a normal paste — no code to handle.