That lettermint service looks interesting! I was recently looking for something in that price range that covers both transactional and broadcast emails but couldn't find anything in Europe so I settled on Postmark which has been good, this looks almost identical in features and pricing though.

Same here. I just discovered this and put it in my "check out tonight" folder. I am currently happy using resend. But this looks interesting, especially also for my freelance clients with a focus on EU tech.