Subsigno

The problem

Email signatures get built in a word processor and break the moment they reach a real inbox — Outlook’s Word rendering engine, Gmail’s stripped-down HTML, Apple Mail’s own quirks each read markup differently. The free generators that already exist ask for an account, watermark the output, or quietly collect the contact details typed into them.

What it is

Subsigno is a browser-only generator — nothing typed into it ever leaves the page, no account, no storage. Pick from six layouts, then check the result against live simulations of how it actually renders in Gmail, Outlook (the Word rendering engine) and Apple Mail — the promise is what you see is what a real inbox shows. Brand-kit setups are carried in the URL fragment, so sharing one with a colleague never touches a server, and the optional social icons are self-hosted with a no-logging promise. A Solvetus Labs release.

Status

In Beta. Live and free to use today at subsigno.com — a formal launch is still ahead.