Thank you very much! According to the document the limit in my case (Users, not bots) is:
- 3 per second, up to 100 per minute
- 40 accounts per day
- 160 recipients per day
I sent the same message to 40 different accounts and it took me 2 hours, so I guess the limit of 40 accounts per day should apply and lock me out for 30 minutes. Why am I still locked out after nearly 21 hours? 