Who manages to carry out mailings without delay on rambler?

Question

Email

We have been mailing to our subscribers for 5+ years. The requirements of the main mail providers have been met. We are freely accepted by gmail, mailru, yandex, ukrnet, bigmir, i.ua and various others. We send 130K+ letters per day.
I wrote to rambler support. They asked for an example of a letter-gave them. Received a report that the problem is solved. But it hasn't been resolved.
Interested in the answers of those who perform mass mailings to their subscribers

Answer 1

Rambler has a very evil and extremely stupid anti-spam. A letter can fall there in four hours and there will be nothing special in it ...