For setting up gmail, here are the steps:
0) Create or pick a gmail account to use
1) Set the port to 587 and the smtp server to smtp.gmail.com
2) Add the gmail address to SMTP AUTH Email and Uncheck "Use SSL".
3) Generate an app password from the Gmail account security settings, and copy paste that password in SMTP Authentication Password field.
a) myaccount.google.com/security
b) Scroll down to section 'How you sign in to Google'
c) Click 2-Step Verification
d) Scroll to the bottom of the page and click 'App Passwords'
e) Generate an app password of app 'Mail' for device 'Windows Computer'
f) Copy down the app password that it generates, I don't think this can be accessed later so save this
g) Add the app password to the Krunch email settings
4) Save, logout, clear cache, restart krunch apache, and login as Krunch user.
5) Run report, email it.