Protect email signatures from unauthorized changes

With cloud deployment, email signatures are applied after emails are sent — guaranteeing compliance and control across all devices without user involvement.

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Implement email signature consistency

Apply signatures on every device and platform

By appending email signatures server-side, you guarantee the same brand-compliant signature on every email, no matter who sends it or what device it’s sent from.

Add mandatory disclaimers, regional compliance text, or industry-specific notices to every employee email. With server-side deployment, you can be confident nothing will slip through the cracks.

Take employee signature management off IT’s plate. Centrally apply signatures and disclaimers server-side across all emails automatically, accurately, and securely in one dashboard.

How email signature cloud deployment works

User sends email

Employees send emails from any device or client.

Email routed through Exclaimer

The email passes securely from your email platform to our Microsoft Azure datacenters.

Email signature is applied

Exclaimer applies the correct signature and disclaimers server-side, based on the rules you’ve set.

Signed email securely delivered

The signed email is routed back into the main email platform and is then sent to intended recipient with an approved user signature.

Why industry leaders choose Exclaimer

Score 4.5 of 5

"A signature management tool that works faultlessly"

Prior to discovering Exclaimer Cloud, our small business was using homemade templates in Microsoft365 which failed to produce the results we wanted across the range of devices our...

See all G2 reviews

Score 9.2 of 10

"Decent email signature manager with great flexibility"

Our company basically has 4 separate business units that need to appear "somewhat" cohesive while also still remaining separate and free to create their own email signatures. Excla...

See all TrustRadius reviews

Score 4.6 of 5

"Excellent service, takes all the hassle out of Office 365 Signatures!"

Simple pricing shown on their website rather than having to request a quote. Simple to set up with automated systems to configure your account and Office 365, linking the two toget...

See all SourceForge reviews

Score 4.5 of 5

"Auto organisational signatures, bye bye messy signatures"

The integration with Office 365 is excellent. The template editor lets you have different signatures for different users, departments or groups. You can change the email signatures...

See all Software Advice reviews

Score 4.5 of 5

"Professional signatures, very versatile"

The features I most use are the signature tester and troubleshooters, which can help you to determine what signature a particular user will get when sending to certain recipients....

See all Capterra reviews

Trusted by 9 million email accounts worldwide

Frequently asked questions

How do I activate server-side imprinting?

You can enable cloud deployment during initial onboarding via the Connect option on your Exclaimer dashboard. To set it up later, go to the Settings menu, select Mail Flow, then choose Connect to (your preferred email platform). Follow the on-screen instructions to authorize Exclaimer and set up server-side imprinting.

No. Emails are routed through Exclaimer’s Azure-based service within your local region, using email platform connectors. No email content is stored, and security standards such as ISO 27001, ISO 27018, and GDPR compliance are built in.

Data is encrypted end-to-end with TLS protection, and advanced security measures such as firewalls, intrusion prevention systems (IPS), and active DDoS protection are in place to defend against cyber threats.

No. Because signatures are applied server-side after the email is sent, end users can’t alter or bypass them. This guarantees that every message carries the approved signature and required disclaimers.

Because signatures are applied in the cloud, they aren’t visible while the user is writing their message. However, Exclaimer Cloud can also be paired with our Outlook add-in or Google Workspace app. This gives users a live preview of their signature as they type, while still ensuring the approved signature is applied server-side after sending. However, applied signature visibility in the sent items folder can be toggled on in your mail flow settings for both M365 & Google Workspace.

Yes. Email delivery is never interrupted. Our 24/7/365 monitoring automatically detects any service alerts, with escalation chains that notify Exclaimer’s senior technical team immediately.

In the highly unlikely event that the signature service at a regional datacenter is affected, your organization’s emails will not be lost. As soon as the issue is resolved, email continues to be sent as normal, with signatures resuming automatically.

Exclaimer also uses high-availability clusters, automated load balancing, and continuous data synchronization to ensure seamless failover. Scheduled updates are deployed during off-peak hours, and the service is stress-tested to guarantee reliability.

Exclaimer has been the leading signature management solution for 25 years. We are the only solution that has a 100/100 security scorecard. Our modern cloud-based technology will save your team time, save your business money, and allow you to easily implement disclaimers and brand requirements across signatures.

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