Learn
Email signatures, plainly explained.
What belongs in a signature, which sizes work, and how open and click tracking really work. No sales talk, and honest about what isn't possible.
Articles
- Tracking · Explainer
Email signature tracking: how it actually works
The pixel, tracked links, why opens are estimates and what the privacy rules say.
Read the article 7 min - Tracking · Gmail
How to track email opens in Gmail
Read receipts, tracked signatures and extensions: what works on which account.
Read the article 5 min - Design · Best practices
Email signature size and image best practices
Width, photo and logo sizes, file weight and Gmail's 10,000-character limit.
Read the article 5 min - Content · Basics
What to put in an email signature (and what the law asks)
The essentials, the extras, what to skip and the company details the law asks for.
Read the article 5 min - Marketing · Banners
Email signature banners: marketing in every email
Sizes, ideas, campaigns, A/B tests and when to leave the banner out.
Read the article 5 min
Glossary
The words, briefly.
Came across a term in an article or in your dashboard? Here's what it means, in a sentence or two.
- Email signature
- The block of text, often with a logo or photo, added to the end of every email you send: who you are, what you do and how to reach you.
- HTML signature
- A formatted signature (colours, images, clickable links) built with HTML tables so it looks the same in Gmail, Outlook and Apple Mail.
- Tracking pixel
- An invisible 1×1 image in an email or signature. When the mail app loads it, that is counted as an open.
- Tracked link (redirect link)
- A link that passes through a server that counts the click, then immediately forwards the reader to the real page.
- Read receipt
- Confirmation that an email was opened. In Gmail only for work or school accounts when the admin allows it; otherwise done with a per-email pixel.
- Apple Mail Privacy Protection
- An Apple Mail feature (since iOS 15) that preloads images through Apple's servers, which can count opens that never happened.
- Click-through rate (CTR)
- Clicks divided by the number of times something was shown, such as a banner. Useful for comparing variants.
More help
Guides, templates and professions
- Install guideHow to add an email signature in Gmail2 min
- Install guideHow to add an email signature in new Outlook and Outlook on the web2 min
- Install guideHow to add an email signature in Apple Mail on Mac3 min
- Install guidesInstall guides for every mail app
- TemplatesAll email signature templates
- By professionSignatures by profession
- ToolSignatures for your whole team
- ExtensionRead receipts in Gmail (beta)
- PricingPro: track opens and clicks
Kind regards,
Your first signature is on us.
No trial, no credit card. Fill in your details, copy, paste into your email client. Want to know who opens and clicks? That's Pro.