How to send messages to subscribers?

Question

Email Marketing

Hello. There is a site on WP, with the help of the plugin we inform subscribers about new blog entries. There was a problem, there are more than 40 subscribers and the mailing list processing takes a very long time. In addition, the hoster has a limit of 500 letters per hour. And after the expansion of the site, we will have more shipments. Ideally, there may be some kind of service to which we will send one letter from the engine, and the service itself will send copies to clients. The hoster offered us to switch to the VPS, but the price is too expensive for now, we have a startup.

Answer 1

Dedicated server 5 euros per month - expensive?
If not, then www.kimsufi.com/en
If expensive, then I'm afraid you need to look for something free,
because. similar services (mailing lists), as a rule, also cost money and prices start from 3-5 $ or euros.
I'll prompt you for the search query " email newsletter api wordpress "