Adam, i remember your advice from a youtube video ‘you really shouldn't be running wp auto emails off your own hosting/sever meant for your wp site' but i cant remember the plugin/ solution/ saas you recommended. i seem to remember it was quite a simple solution like the starting with free level of SendinBlue and their plugin but not quite sure. does anyone or you remember which youtube video it was that you went through this advice?
Oh man, you just missed an amazing lifetime deal on ConvertFox, which is what I have since begun using.
There are a bunch of services with different “gotchas” on their free tiers. Before ConvertFox I was using Mautic, and actually still am using Mautic. It's free, self hosted, and works great.