Every email, unmistakably on brand.
Signatures, handled.
One place to set how every mailbox signs off — designed with the same care as the rest of your identity, and delivered without touching your sending reputation.
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01
Centrally managed
Set signatures once, by person or by group. Update a title, a phone number or a campaign in one place — no chasing staff to edit their own.
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On brand by default
Editorial signatures built from your identity — correct typeface fallbacks, considered spacing, and tidy tables that survive Outlook and Gmail intact.
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03
Closed-loop delivery
Mail routes through your own Microsoft 365 transport rule and is handed straight back to Microsoft to send. Your warm IPs, your DKIM — no cold relays, no deliverability surprises.
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04
Banners & disclaimers
Add a campaign banner or a legal disclaimer to outbound mail — scheduled, scoped to the right people, and switched off the moment a campaign ends.
Three steps, then it runs itself.
A one-time setup in your Microsoft 365, and Sendmark stays out of the way — stamping every outbound message and letting Microsoft do the sending.
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01
Connect
We add an outbound transport rule in your Microsoft 365 that routes mail through Sendmark. Nothing is installed on anyone's device.
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02
Compose
Design signatures, banners and disclaimers in the Sendmark app and assign them by person or group. Preview exactly how each will render.
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03
Send
Sendmark injects the right blocks, then hands the message back to your Microsoft 365. Microsoft delivers it as normal — under your domain, your DKIM.
Switch it on for your organisation.
Sendmark is enabled per organisation. Sign in if your organisation already has access — or request access and we'll switch it on for you.