I've been using sendinblue with good success. This author could have used sendinblue and still been in the free plan if he spaced out his newsletter (max 300 em

I've been using sendinblue with good success. This author could have used sendinblue and still been in the free plan if he spaced out his newsletter (max 300 emails a day for free). Even the first paid plan at $25 lets you send 40k a month, which is pretty solid. And they have transactional as well as mailing list support.