Can you tell me is it difference to sending campagin at one time or split with hourly limiting?
Let say I have 100k list, should I send without hourly limits or with it?
How does is black lists work if i send at one time?
(my ip are warmed up)
Putting hourly limits is always useful. You need to check with your IPs reputation and threshold limits with the recipient's domains. Find the best number for the hourly rate and do slow feed instead of being aggressive. Also spin your content a lot to bypass the initial spam bots.