The email tool, such a great tool! And such a minefield. Both of the problems below could and maybe should be remedied on the SMTP side, but that's applying a pretty broad brush for a budding Alteryx community at a big company. Read on!
What I said the first time I ran the email tool without testing it first.
1. Can I get a thumbs up if you ever connected a datasource directly to an email tool thinking "this is how I attach my data to the email" and instead sent hundreds... or millions of emails? Oops. Alteryx, what if you put an expected limit as is done with the append tool. "Warn or Error if sending more than "n" emails." (super cool if it could detect more than "n" emails to the same address, but not holding my breath).
2. make spoofing harder, super useful but... well my company frowns on this kind of thing.