Email signatures you can prove and control.

Signatures, disclaimers and campaign banners managed in one place, with proof for every message and encryption only you can unlock.

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The StampFlow template editor with a signature design open
The Templates page, each signature design on its card
A received email on a phone, ending with the signature that was applied
Designed in the StampFlow editor
Proof for every message
Recipients and auditors can confirm an email really came from you.
Your data, your key
Per-tenant encryption. A copy of the database alone shows nothing.
Mail never stops
If anything fails, the message is delivered without a signature, never held.