Advanced 3rd Line Support for MSPs | Microsoft Exchange Consultancy

Your specialist partner

Your specialist
technical
partner.

Expert consultancy, technical mentoring, and advanced 3rd line support from independent Microsoft Exchange specialists, trusted by businesses and MSPs alike for over 20 years.

What we do

At Sembee, we provide expert services in the design, implementation, maintenance, and troubleshooting of Microsoft Exchange environments. Our offerings span Exchange deployments, migrations, and ongoing support, with a particular focus on helping businesses and MSPs optimize their infrastructure. We also step in to rescue failed or substandard installations, ensuring smooth, reliable Exchange operations.

Beyond Exchange, we deliver advanced 3rd line support to MSPs, tackling the complex and high-priority issues that teams might push to the back burner. Our extensive experience with Microsoft technologies enables us to handle critical Office365 configurations, cloud migrations, and networking challenges - whether on an ad hoc or project basis.

The Sembee story

Following our launch in 2003 as a general IT consultancy, we have specialised in Microsoft's Exchange Server since 2006. Today our clients range from small, five-user offices to many thousand-user multi-national organisations. We either work with them directly, or as part of their IT support team.

Technical Mentoring

We provide technical mentoring for staff newly promoted to 3rd line or managerial roles, particularly within MSPs. Our mentoring service is designed to help these individuals shift their focus from hands-on technical work to leadership and delegation, ensuring a smooth transition into their new responsibilities. These sessions can be one-on-one or involve the entire team, depending on the needs of the organization.

Our approach

Because email is such a critical commodity for enterprise-level clients, our policy is to keep our solutions as simple and clean as possible. That way they can be quickly installed, and easily maintained, scaled and upgraded. We never waste a client’s time or money with over-complicated solutions.

We can carry out work on site or remotely. Unlike some other consultancies we never outsource services to third parties.

Whether you are looking for Microsoft Exchange expertise, advanced support, or mentoring for your team, we are here to help you succeed.


Call 0345 644 2669 or email us at contact@sembee.co.uk.

Simon Butler


Simon is a seasoned IT professional with over 20 years of experience, particularly within the MSP environment. A "server guy" through and through, Simon has been working with Microsoft Exchange since 2003, earning Microsoft Exchange MVP (Most Valuable Professional) status in 2005. Specializing as an independent consultant since 2006, he has partnered with numerous MSPs, helping them tackle complex Exchange challenges, high-stakes migrations, and day-to-day technical issues.

Throughout his career, Simon has worked closely with MSPs, understanding their unique operational demands and the diverse technology stacks they manage. His experience spans not only Exchange but also a wide range of network administration, cloud services, and legacy systems, giving him a comprehensive view of the broader IT landscape that MSPs navigate daily. This breadth of knowledge allows him to quickly diagnose and resolve problems that go beyond the Exchange environment, providing solutions that account for the entire infrastructure.

Now, drawing on this wealth of experience, Simon also offers technical mentorship. His mentorship program is designed to support staff newly promoted to 3rd line or managerial roles, guiding them through the complexities of MSP environments and helping them transition from hands-on technical work to leadership and technical direction. Simon's practical, real-world experience makes him uniquely equipped to mentor and develop the next generation of IT leaders within MSPs.

Simon lives in Oxfordshire with his wife, two children, and their cat.