Exclaimer was the first-ever email signature solution
In 2000, Exclaimer's founders ran a bespoke software development company. Several clients asked them for the same thing, a way to add disclaimers to email automatically in Microsoft Exchange. At the time, no such solution existed.
Founders Andrew Millington and Chris Crawshay brought in Gary Levell, and they built it themselves. Exclaimer launched in the UK in 2001, and email signature management has been our focus ever since.
25 years of email signature expertise
Exclaimer serves organizations of every size, from small teams to global enterprises. We’re built for IT and valued by Marketing and Compliance teams, letting companies eliminate manual signature updates, enforce brand governance, and get greater control over their most critical business communication channels.
Exclaimer's history
2001: Exclaimer releases the first version of its email signature software in the UK.
2007: Exclaimer becomes a Microsoft Gold Partner.
2010: Exclaimer opens offices in the Netherlands and Australia.
2015: Exclaimer launches its cloud solution for Office 365, now Microsoft 365.
2016: Private equity firm Livingbridge invests $28 million (£23 million).
2018: Exclaimer launches its Google Workspace solution.
2019: Exclaimer opens its first American office in Miami, Florida.
2020: Software investor Insight Partners invests $133 million (£100 million).
2021: Exclaimer acquires the customer survey company Customer Thermometer.
2024: Exclaimer opens its U.S. headquarters in Boston.
2025: Exclaimer launches Meeting Branding, which applies company branding to video meetings.
Secure by design
Exclaimer doesn’t store email content. Our cloud solution processes each email in transit to apply the email signature, then delivers it. That means no message content, subject lines, or attachments are kept. It runs on Microsoft Azure, holds ISO 27001, ISO 27018, and SOC 2 Type II certifications, and meets GDPR, HIPAA, and CCPA requirements.
See how we protect your data on our Security page, where you can also find our current certificates in the Trust Center.
Exclaimer is recognized internationally
Exclaimer has been recognized for our software and our workplace every year since incorporation. That includes multiple G2 Best Software awards, a place among the UK's highest-performing private tech companies in the Megabuyte50 ranking, and being ranked one of the fastest-growing companies in Europe by the Financial Times. We're Great Place To Work Certified in the UK and the U.S., and CRN, an IT industry publication, named us Best Company to Work For in 2024-2026.
Exclaimer's leadership
People first
Parents get up to six months of paid parental leave, regardless of gender. Everyone gets flexible paid time off they can take in full days, half days, or single hours. Each person also has a personal development allowance and access to LinkedIn Learning. Our employee-led wellbeing group, Exclaimer Thrive, runs workshops and awareness campaigns across the company.
Where we work
Our headquarters is in Farnborough, England, and our U.S. headquarters is in Boston, Massachusetts. We also have offices in London, Brighton, Schiphol (Netherlands), and Sydney.
Company information
Legal name: Exclaimer Ltd (UK company number 04938619)
Registered office: 250 Fowler Avenue, Farnborough, Hampshire GU14 7JP, United Kingdom
Founded: 2001 (incorporated 21 October 2003) by Andrew Millington and Chris Crawshay
Chief Executive Officer: Rob Singer
Employees: around 300
Legal: Legal hub
Try Exclaimer for free today and unlock the power of email
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