About
Every email is an opportunity.
We're on a mission to turn the world's outbound email into the world's best-performing marketing channel.
Custom Esignature started with a simple observation: teams pour money into ads, landing pages, and outreach — yet the one asset that ships with every single email they send is treated as an afterthought.
We rebuilt the email signature from the ground up: an AI-assisted builder, deliverability-safe HTML, and analytics so you finally know what's working. It's the tool we wished existed at every company we worked at.
Today, thousands of teams use Custom Esignature to look consistent, install in a click, and turn every outbound email into a measurable channel.
Design first
Signatures should look like they belong in your brand — not like a 2005 email footer.
Measurable
If it goes in an email, it should show up in a dashboard. Every click, every campaign.
Effortless
One-click install, one dashboard, one source of truth. No IT tickets required.