Brevo PushOwl: Email,Push,SMS

Edit: I was wrong about Brevo, their delivery rates are decent, support is ok and features are MUCH more flexible than most competitors. On the top, they don't charge you for "subscribers" especially if you don't use to send to all of them. I like that

Nothing in this stupid platform works correctly. Even a simple abandoned cart flow.
Reporting is poor, you constantly go redirect from one app to another for no reason.
Customer service is the WORST!
They are responsive until they get your money, after that you are alone with all the BS their platform has.