What are some reliable email marketing services?

Question

Email Marketing

Who uses what services? I thought to use mailchimp, but for 20 thousand subscribers the price bites.
They used unisender for a very long time, a large base of their subscribers, but then they noticed recently that with a seemingly large percentage of "delivery" of letters, in fact, many clients of letters, not only in spam, do not receive letters at all.
We noticed this after we started calling people before the action and asking if they wanted to participate. they agree, they are waiting for a letter, but it does not come (although it is written in the mailing history - delivered) - they write to us. Technical support somehow does not help, like everything is OK, it happens ...

Answer 1

everything is individual and chaotic,
there was a time when unisender was used just because Chimp was spammy, about three years ago
there were few alternatives in this segment, in the corporate one it starts from $ 5k per month,
see getresponse.com and pechkin-mail.ru if for RU
and - the percentage of opening emails you do not look at? Do you check delivery yourself? for 20k, you can already figure out the budget for the verification system, especially if the business depends on soaps ...