I have no idea how to do that, that is still an issue for the CWPpro support team, or for their Forums, if they have one.
I don’t find their answer very reasonable, though - enabling a PHP module does not normally require a PHP reinstallation. But maybe what they call “reinstall PHP” is a simple task, from their Control Panel? I don’t know, I never used it.
Bear in mind that there might be other PHP modules you need. Normally in Ubuntu (with PHP 7.2) I install these:
The modules change to slightly different names in different Operating systems and PHP versions.
So the best strategy is just to try it out and see if the software complains some piece is missing. But I am assuming that this is a simple setting to play with, until you get things right, it shouldn’t require any complicated reinstallations.
So, I’m sorry, but I can’t give you a more precise answer regarding a system that I am not familiar with. You’ll have to try, and discuss it with the CWPpro support team.
Yes, it can be used as an email client. And yes, you can link emails to any records in SuiteCRM.
But please be warned that
it’s not a full-featured email client, it’s a simple client
there are a few bugs in it. The upcoming Release is primarily focused on addressing Email bugs, so make sure you update when it comes out. But your best option is to test if the functionalities you need are working to your satisfaction before jumping in.