We have set up this particular Craft CMS site with smtp details and when testing from the Settings > Email page it works fine. We've installed Sprout Forms and created some forms - all seems pretty good, but when we test a notification email from within the Sprout Forms admin area we just get an 'internal server' error. No specifics at all. just 'Internal Server error'. Anybody been through this before?
As the original poster reported in the comment above. This "looks like a completely different issue unrelated to email."
answered Dec 1 '20 at 13:43
storage/logsfolder. If it's a web-server-generated internal server error, it should be in your web-server's error logs. I'd start by looking into those.