How to create your own service for collecting and sending PUSH notifications?

Question

Push technologies

Services, of course, they are services, but using their services I get access to the database, which the service itself then monetizes, it’s not a pity at all, it’s scary that they can overheat my traffic with their “dick creams” so that people will unsubscribe.
Maybe I misunderstood something, help mi pliz
Task:
On the website of my company engaged in promotion on the Internet, hang push and further warm up your database. is it possible to do without services?

Answer 1

Is it possible to do without services

Yes.

How to create your own service for collecting and sending PUSH notifications

Find developers who will do it for the money you offered.
You will not be able to do this without knowledge in the field of development.

Answer 2

Help friends