Later is now successfully sending emails!
This might sound like it should have come much earlier in the project, however I wanted to get the key functionality of the tool in place, leaving email as one of the later things to do.
I have a few more smallish tasks to do, like figure out how I’m going to get logging in and authenticating working. But this shouldn’t take too long. I’m thinking of using some sort of SSO system which could easily be tied into university systems.