As you know Robert and I basically share free support duties in Town Hall, and this is a very good suggestion. This problem comes up all the time, I know at least two times in the last couple of weeks in fact.

What usually happens is after a PHP upgrade by their shared hosting plans wrecks their mailparse extension, they suddenly stop getting mail and are confused. They'll pop into chat and after some talking we have them go to the server checker in /debug and it's always "mailparse is not installed".

This would save the customers time during the diagnosis phase and us some time from answering the same questions constantly in chat.

Fixed in Cerb5 RC1