I give you a warning that asks if you want to continue and I tell you what continuing will do... if you need further clarification ask! Don’t press it 100 times. (Feature they wanted to send out an email blast to all customers ~2000 people)

I feel you. I find it hard to test such systems that need to send emails to clients dynamically without accidentally spamming someone.

Heck, I got our generic email account flagged for spam by Google because it kept mailing me the same error message every time it ran.