Exclaimer Email Signatures

Every email.
Perfectly branded.

Exclaimer is the market-leading email signature platform, used by over 70,000 organisations worldwide. We deploy, manage, and maintain your Exclaimer setup so that every email your team sends is perfectly consistent and on-brand.

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70k+ Companies using Exclaimer
100% Signature consistency
Auto Updates across all devices
GDPR Compliant by design

What Exclaimer delivers

Professional signatures
on every email, every time

Email is still the primary communication channel for most businesses. Exclaimer ensures every email leaves the right impression.

  • 01 IT and marketing aligned

    Centralised Signature Management

    Manage all email signatures from a single platform. No more chasing staff to update their signatures. Templates update automatically across all users, devices, and email clients.

    • Central template management
    • Automatic rollout to all users
    • Works on all devices and clients
    • Role-based signature assignment
  • 02 Always on-brand

    Brand Consistency

    Ensure every email leaves your organisation looking professional and on-brand. Exclaimer enforces your approved design, fonts, and logo, whatever device or email client your staff use.

    • Approved brand templates
    • Logo and font enforcement
    • Multi-department templates
    • Designer-friendly editor
  • 03 Regulatory compliance

    Legal & Compliance Disclaimers

    Automatically append legal disclaimers, GDPR notices, and regulatory statements to all outbound email. Ensure compliance without relying on individual staff members to remember.

    • Automated legal disclaimers
    • GDPR notice management
    • Sector-specific compliance
    • Audit-ready signature records
  • 04 Marketing via email

    Campaign Banners

    Turn every employee email into a marketing opportunity. Add campaign banners, event promotions, or product highlights to email signatures, all updated automatically across the entire organisation.

    • Rotating banner campaigns
    • Targeted by role or department
    • Clickable links and tracking
    • Scheduled campaign switching

Works with Microsoft 365 & Google Workspace

Seamless integration with your existing platform

Exclaimer integrates natively with Microsoft 365 and Google Workspace, applying signatures server-side after email leaves the client. This means signatures appear consistently regardless of device, operating system, or email client. No plugins required on individual devices.

  • Server-side signature application
  • Microsoft 365 and Google Workspace compatible
  • Works on desktop, mobile, and web
  • No user-side installation required
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100%
Signature consistency across all devices and clients

Deployed & Managed by A4S

We handle setup, configuration, and ongoing management

We don't just resell Exclaimer. We configure it, design your signature templates, connect it to your Microsoft 365 or Google Workspace environment, and manage it on an ongoing basis. When your branding changes, we update it. When new starters join, we add them. You don't have to think about it.

  • Full deployment and configuration
  • Branded template design
  • New starter and leaver management
  • Ongoing monitoring and support
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< 1 day
Typical time from sign-off to live signatures

Why choose A4S?

Email signatures that work
as hard as your team does

Most businesses underestimate the impact of inconsistent email signatures, but every email is a brand touchpoint. Exclaimer ensures every one of them counts.

  • Market-leading platform trusted by 70,000+ companies
  • We deploy, configure, and manage it for you
  • No IT burden on your internal team
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  • Brand always protected No more off-brand fonts, missing logos, or outdated job titles. Exclaimer enforces your approved design across your entire organisation.
  • Compliance made easy Legal disclaimers, GDPR notices, and regulatory statements automatically appended to all outbound email, with no staff action required.
  • We manage it for you We handle setup, template design, user management, and updates. You get the benefit without the admin burden.

Frequently asked

Questions we
hear all the time

Exclaimer is the world's leading email signature management platform, used by over 70,000 organisations. It automatically applies professional, brand-consistent email signatures to all outbound email, server-side, regardless of device or email client.

Yes. Exclaimer integrates natively with Microsoft 365 and Google Workspace. Signatures are applied server-side after email leaves the mail client, ensuring consistency across all devices including mobile.

Yes. Exclaimer allows you to create multiple signature templates and assign them by user, department, role, or any Active Directory attribute. Sales, support, and leadership can all have different signatures if required.

We typically have Exclaimer live within 1 business day of receiving your approved signature designs. This includes configuring the platform, connecting it to your email environment, and testing across multiple devices and clients.

Once configured, new user signatures are generated automatically based on their Active Directory or Microsoft Entra ID profile. We monitor this as part of ongoing management, but in most cases it's fully automated.

Insights & resources

Further reading

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Ready to professionalise every email your team sends?

Let's get Exclaimer
working for you

We'll show you what Exclaimer can do for your business, design your signature templates, and have you live within a day. Get in touch to get started.

+44 1491 712 344 [email protected]

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