June 3, 2026
0 minutes to read

Thornley & Lumb Partnership Ltd

Summary

Thornley & Lumb modernised its project email management by moving from an alternative product to CMap Mail. After nearly a decade using a locally stored system, the firm wanted a more secure, scalable, cloud-based solution. CMap Mail provided stronger security, better search functionality, smooth integration with Outlook, and strong adoption across the business. The firm now files between 10,000 and 15,000 emails each month and has gone on to recommend CMap Mail to other AEC organisations.

Situation

Thornley & Lumb had used an alternative solution for almost ten years. Although the system had worked well, its reliance on local storage created several challenges. The business faced exposure to ransomware and the risk of local machine failures. Long-term data resilience was limited, and storage demands were increasing as project volumes grew. At the same time, the firm was moving more of its systems to the cloud and needed its email management approach to keep pace.

With tens of thousands of project emails filed every month, the firm needed a secure, future-ready solution that would integrate seamlessly with Outlook and support project-based workflows.

'The security of having a cloud-based system was probably the biggest decision. When everything's locally stored, If you had a ransomware or anything like that, it would be very hard to get it all back.'

Solution & Results

Thornley & Lumb chose CMap Mail as its next-generation email management platform for its cloud-based architecture, robust security, and ease of use.

'We would recommend CMap Mail. We have already promoted it to others.'

The transition included migrating all active projects into CMap Mail while keeping legacy archives stored locally, with the option to bring older projects into the system when needed. The platform integrated smoothly with Classic Outlook and remained fully compatible with New Outlook. It also provided fast and accurate search capabilities tailored to project number workflows.

'It works well with new Outlook. For now, everyone's still on classic, but we have the option to transition when needed.'

The move to CMap Mail was straightforward, and the team adopted the new system quickly.

'The setup was fine. The process was easy, the team were able to pick it up and use it is absolutely fine.'

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