I was performing some mailbox server health checks recently and was trying to find an easy way to test mail flow latency between a lot of servers at once using Test-MailFlow.

After a little bit of tinkering I came up with a PowerShell script that would do the job, but the report it generated was a bit hard to read because all of the output was just on the screen in a single colour. So I decided to take it a step further and output the results to HTML and use colour-coded table cells to give me a report that is easier to read at a glance.