@alarinel, looks to me like chillbilldill was telling you that there’s a free tier and how to get it. Why is your first thought that he works for them?
The Ghost dev team has said repeatedly that they’d be happy to have additional options for bulk email besides Mailgun, if someone would volunteer to write them. No one has stepped up. You’re using Ghost for free (because if you were paying the Ghost Pro folks for it, you wouldn’t be having to deal with Mailgun directly), which means you’ve probably spent exactly $0 to support the Ghost dev team. So it’s sort of a bad look to be complaining about it.
I self host. I had zero problems setting up Mailgun, and my newsletter goes out weekly with no problem. I did need to fuss a bit with their pricing options, which are weird, but this thread helped me. [solved] Mailgun has changed "pay as you go" offer - how to send cheap emails with Mailgun - #21
If you want to complain about Mailgun’s customer service, you maybe wanted the Mailgun forum. I’m pretty sure they aren’t reading this forum.
p.s. I don’t work for Mailgun OR Ghost. I work for myself.