They keep suspending the entire account
I currently manage over 150 clients using this service. Unfortunately, whenever one client receives even a few spam complaints, the provider suspends my entire account. This means all 150 of my clients are affected at once. This issue has been recurring. The most recent suspension has lasted for over a week. Despite sending around four emails and filling out their contact form to address the suspension, I've yet to receive any response. Such practices are unacceptable for any business. If there's a spam complaint, the logical step should be to suspend only the website in question, not the entirety of my websites. It seems like MailPoet's strategy is essentially to push us to stop using their service. I suspect they're applying this approach particularly to those with AppSumo lifetime deals, likely because these accounts don't generate ongoing revenue. Offering a lifetime deal without the intention to honour it is misleading and shouldn't happen.