Exclaimer Email Signature Management

Consistent, compliant email signatures—managed centrally, applied everywhere

Exclaimer is email signature management software that lets you centrally design, control and automatically apply consistent signatures across Microsoft 365, Microsoft Exchange and Google Workspace—without relying on users to set them up correctly.

If your business struggles with messy signatures, missing disclaimers, outdated branding, or different formatting across devices, Exclaimer standardises everything from one portal and deploys signatures across your organisation in minutes.

What problems does Exclaimer solve?

1) Brand consistency across every device

Employees email from desktops, mobiles, webmail and multiple clients—so signatures drift fast. Exclaimer centralises management so the same signature experience is applied across devices, including mobile.

2) Compliance and legal disclaimers—automatically

You can ensure disclaimers and regulated messaging are applied consistently, helping reduce the risk of “missing footer” issues.

3) Less IT workload, fewer tickets

Exclaimer is positioned to remove reliance on complex scripts, mail flow workarounds, and user-by-user fixes, reducing support overhead and “signature policing”.

4) Marketing-ready signatures (banners, targeting, scheduling)

You can run signature campaigns with banners and schedule changes—useful for promotions, announcements, events or seasonal messaging.

“How deployment works”

Exclaimer supports server-side, client-side, or hybrid deployment. If you’re unsure which model fits your environment, we’ll recommend the best approach based on your email platform and compliance needs as part of our Project plan. We typically set it up on the 365 back-end, have a group in M365 that’s synced through to Exclaimer, and any users within it will have the signature applied.

“Security & reliability”

If security is a key driver, we can position Exclaimer within your wider email risk controls, including Cyber Security, so branding and compliance go hand-in-hand with protection.

Key features of Exclaimer

Centralised signature design (no fuss)

• Create and manage signatures from one place using a web portal and editor.
• Use professional templates and apply your brand elements (logos, fonts, colours).

Automatic staff details (directory sync)

• Signatures can auto-populate from Microsoft Entra ID (Azure AD) or Google Directory, keeping phone numbers/job titles accurate without manual updates.

Rules-based signatures (right signature for the right people)

• Apply different signature templates by user, team/department or conditions (ideal for multi-team businesses).

Delegate safely (RBAC)

• Role-based access control helps non-IT teams (e.g., Marketing) manage signature content while IT retains admin control.

Reporting and analytics (higher tiers)

• Monitor usage and see engagement/metrics depending on plan.

Integrations

• Exclaimer lists integrations including Salesforce and HubSpot, plus others such as Microsoft Bookings and scheduling tools.

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How deployment works (plain English)

Exclaimer supports server-side, client-side, or hybrid deployment models:

Server-side (applied after Send)

• Signatures are applied during mail transport (after the user clicks Send), delivering consistent signatures across devices and clients.
• Best when you want maximum consistency and central governance (especially for compliance). Exclaimer

Client-side (seen before sending)

• Signatures are inserted while composing in Outlook, so users can preview before sending (where supported).
• Best for teams who want to see what’s going out (e.g., sales).

Hybrid (best of both)

• Many organisations use both: preview in Outlook + server-side enforcement to keep everything compliant and consistent.

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Security & reliability (for due diligence)

Exclaimer highlights industry certifications including SOC 2 Type II and ISO 27001 / ISO 27018, and positions itself as having these together for email signature software.
It also describes hosting across Microsoft Azure datacentres with 99.99% availability and regional resilience/failover (as referenced in its materials).

Frequently asked questions on Exclaimer Email Signature Management