Guides & tips
Email signature guides
Everything you need to create, install, and optimise your professional email signature.
Setup guides
Gmail
How to add an HTML email signature in Gmail
Step-by-step guide for Gmail on desktop. Includes the easiest paste method and troubleshooting tips.
5 min read
Outlook
How to add an HTML email signature in Outlook
Covers Outlook for Windows, Mac, and Outlook Web. Includes notes on the Word rendering engine.
6 min read
Apple Mail
How to add an HTML email signature in Apple Mail
Apple Mail needs a slightly different approach. We walk you through it step by step.
5 min read
Articles
Guide
What makes the best professional email signature in 2025?
Design principles, must-have elements, common mistakes, and examples of signatures that actually work.
8 min read · March 2025
Gmail
HTML email signatures in Gmail — the complete 2025 guide
Everything Gmail supports, what it does not, and the cleanest way to get a perfect signature installed.
7 min read · March 2025
Design
Email signature size and dimensions guide (2025)
The ideal width, height, image sizes, and file sizes for signatures that render cleanly everywhere.
5 min read · March 2025