Client-side signature deployment for full local control

Apply signatures directly within the email platform so users can see them before an email is sent. Ideal for privacy-focused organizations, hybrid deployments, and providing a familiar end-user experience.

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Why choose device deployment

Real-time visibility for users

Employees see their signature applied to their message as they type. No second-guessing, no formatting surprises — just effortless assurance that every email sent looks professional and on-brand.

Keep the signature process on user devices instead of routing through the cloud. This option is a great fit for regulated and security-focused companies that want tighter oversight and assurance their data stays close to home.

Combine device-side deployment with cloud deployment to cover every angle. Employees see their signature in real time as they compose emails, while IT knows every message — sent from any device or platform — still carries the correct, compliant signature at delivery.

How device deployment works

Connect your mail service

Exclaimer securely connects with Microsoft 365 or Google Workspace, using directory data to automatically keep signatures accurate and up to date.

Configure client-side deployment

In the Exclaimer portal, choose to enable client-side signatures, ensuring they sync directly with user devices.

Deploy the add-in

An Outlook add-in (for Microsoft 365) or a Google Workspace app (for G-Suite) is deployed so signatures can be applied inside users’ email clients.

Sync and apply signatures

Once enabled, the chosen signature templates automatically synchronize to Outlook and Gmail, appearing instantly as users compose their emails.

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

Take control of every email signature

Standardize, manage, and update signatures across your entire company with ease.

Frequently asked questions

 How does the setup differ between Microsoft 365 and Google Workspace?

For Microsoft 365, IT admins deploy the Exclaimer for Outlook add-in during onboarding. For Google Workspace, admins install the Exclaimer app from the Google Workspace Marketplace. Both methods ensure signatures are applied client-side and are visible to users as they compose emails.

With device deployment, signatures are applied locally on user devices. Some organizations prefer this option for the familiar experience and added assurance; However, Exclaimer’s cloud deployment is just as secure.

Our platform is SOC 2 Type II compliant, and we are the only email signature platform to achieve a 100/100 Security Scorecard rating — meaning every element of our product has been designed and independently validated to meet the highest security standards.

No. While it may take a brief moment for a signature to appear in the compose window, the Outlook and Gmail add-ins do not cause slowdowns or interfere with the user’s email experience.

Yes, with device deployment, users see their signature directly in Outlook or Gmail as they type. With cloud deployment, signatures are appended at the point of sending, ensuring they are always present and compliant — even if the user doesn’t see them during composition.

Absolutely. Many organizations choose a hybrid approach. This gives employees real-time visibility of their signatures, while also ensuring every email — regardless of device or platform — has the correct, compliant signature applied after sending.

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 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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Simplify signature management for IT

Eliminate manual updates, reduce support tickets, and keep every email on-brand and compliant—all from one centralized platform.