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Celebrating 5 Years of Exclaimer’s Cloud Signature Solution

Exclaimer's cloud signature solution is officially celebrating its five-year anniversary, marking an important milestone for our company. When we started developing our cloud-based email signature management solution, we never thought that it would lead to such a dramatic and unprecedented period of company growth.

From on-prem to the cloud: The genesis of Exclaimer's cloud signature solution

Exclaimer's cloud signature solution was born in 2015, as one of the very first Office 365 (now Microsoft 365) email signature management solutions. At the time, we were primarily known for providing email signature software for Microsoft Exchange and Outlook. In fact, we actually built the first ever email signature solution all the way back in 2001.

These products enabled companies to centrally manage corporate email signatures efficiently, delivering consistent branding, promotions, disclaimers and compliance statements, while substantially cutting admin overheads.

However, by 2015, it was becoming very clear that many organizations were moving away from on-premises server hardware and migrating to the cloud. The rapid growth of Office 365 in particular was not something that could be ignored. We needed to adapt to this fundamental shift in the IT landscape.

Our goal was to research and develop a dedicated Office 365 version of our email signature software, having it function as a value-added solution for IT and marketing professionals. This meant fundamentally rethinking our software development processes and not relying on past successes. We needed to bring something completely new to the market, which meant taking full advantage of the natural scalability and reliability of Microsoft Azure.

By utilizing the Azure platform, we were able to access technologies such as automatic failovers and load balancers. This would allow our new Office 365 solution to work across thousands of Azure servers worldwide. By choosing the right architecture to work with, we would easily be able to scale our email signature management solution as needed, ensuring reliability that would give us a 99.9% service uptime.

The success of Exclaimer's cloud signature solution: A true game changer & growth driver

The first iteration, named Exclaimer Cloud – Signatures for Office 365, quickly proved a major success for us. From the get-go, the product was positively received. It was named as one of the ‘6 Best Innovations’ at the Microsoft World Partner Conference, putting it in the same category as Microsoft’s Cortana Analytics Suite.

Customer uptake was rapid, with many customers and partner praising this evolution of email signature management. Reviews were also extremely positive, particularly from the Microsoft MVP community. Within less than a year, the uptake of Exclaimer's new email signature management solution had overtaken our on-premises software, making up the overwhelming majority of our sales. Further iterations of the solution came in the form of Exclaimer Cloud – Signatures for G Suite and Exclaimer Cloud – Signatures for Exchange (for hybrid Exchange users) in 2018 and 2020 respectively. The solutions were then combined into one overall email signature management suite.

Here are some key statistics on Exclaimer's cloud signature solution:

  • The number of emails imprinted with signature templates has increased to a staggering 5,000% over five years.
  • The number of aggregated users has grown by 100% year-on-year since 2015.
  • Our Azure usage has seen an increase of 2,500% over five years. In turn, this has led to a 5,400% increase in Azure spend.
  • In 2015, Exclaimer's cloud signature solution used three Azure datacenters. As of 2020, the solution now resides in 12 datacenters worldwide located in the UK, European Union, North America, India, and Australasia. This is the highest number used by any comparable company within this vertical category.
  • It was the first cloud-based email signature solution in the world to be awarded the ISO/IEC 27001:2013 Certification for Information Security Management – the highest security standards a company can achieve.
  • It can boast of an average Customer Satisfaction Score (CSAT) of 97%. This is well above the industry average of 79% for Computer Software*.

We are incredibly proud of the many accolades we have received over the last five years. We’ve won the Queen’s Award for Enterprise: International Trade twice, been listed frequently as one of Britain’s fastest growing tech companies by the Sunday Times, and awarded #1 rankings on G2 Crowd in the Email Signature Software category. And these are just a few examples.

Today, tens of thousands of businesses and millions of users worldwide use Exclaimer's cloud signature solution for their email signature management needs. The uptake of this product demonstrates a clear need for what we offer from SMEs through to the largest enterprises.

Looking ahead: Moving to the next stage of our journey

As we look to the future, we know that the last five years are only the beginning. On this special anniversary, we want to thank everyone who has been a part of this stage of Exclaimer's story. Looking forward, and with the help of our customer base’s input, our product roadmap shows no signs of slowing in meeting business needs, providing innovative solutions, and truly moving the market forward.

Our world-class development team continue to work tirelessly to provide the best email signature management experience possible. Our management team is comprised of individuals from backgrounds focused on global SaaS solutions, data security, information technology, business development, sales optimization and strategic IT planning. We are in an exceptional position to truly grow our email signature software to the next level. It’s been an amazing journey for us since we launched our cloud solution, and we’re excited to see what the next five years has in store.

* Staffaroni, Sara, “Customer Satisfaction Score (CSAT) Industry Benchmarks”,, November 25, 2019.

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