Error on email verification resend

Howdy,

New to the game hosting something this large on my server. So bear with me.

I finally got around to setting up my SMTP server with postfix and getting it into mattermost.

Here is the issue:

When a user initially signs up, the verification email sends without a problem (albeit to the "Spam" folder, but that's a SMTP issue). HOWEVER, if the user loses the email or something, when I hit "Resend" it says there is an error and the email cannot be sent.

Also, I have no options that I can find to add integrations.

Lastly, as I cannot find any good updates around the site, is better admin controls still planned? I.e. - the ability to remove users from channels, shut down channels, better user groups permission control?

Thanks for any answers that you can provide.