Is there a deferred posting service with an API?

Question

API

You need to send several million records to different groups, doing this manually is not an option, but VK has like limits on the timer (25 per day) (I don’t know if there are any total number of records in the timer), then you need a delayed posting service, which has an API for adding posts.

Answer 1

https://geektimes.ru/post/144329/
https://vk.com/page-43503600_50938244
I didn’t personally check it, I found it on Google, there seems to be a lot listed, maybe something will suit you.