[VDOVault]

I think there's something like rate limiting going on for Twitter/X DMs & if you fire off too many similar / identical DMs in too short a period of time, that gets you suspended.

Also I'd add a fifth lesson to your list 5) Request an archive of your Twitter/X account on a regular basis (at least monthly, maybe more often) while that's still possible to do

[alexanderisora]

The rule of thumb is to act like a regular human. If you are a savvy user, you have shortcuts for everything, you have scripts for optimizing your work, then be careful.

Exporting your data is a great piece of advice. Thanks for reminding that.