Thanks for the links. I took a look at the whole conversation and for a novice like myself, a lot of what’s being discussed is new to me, but I guess I will have to do some research and test it myself. If anything, I can always go back to Digital Ocean, right?
Contabo seems to be indeed a good option in terms of price and what it offers. I still need to understand the issue with some providers blocking email providers, which I have no clue what that is. I remember having an issue with Brevo and had to use a different port from the one recommended in the official installation. With a little bit of research and tests, anything is possible.