Hi Alphian,

I have experience with both "dinosaurs" of email marketing world. Namely Getresponse and Aweber. I prefer Getresponse slightly more, I find their interface bit better and their pricing is better (at least for person starting out). But for seasoned marketer Aweber is cheaper, as e.g. for email lists of 5k-10k Aweber is almost $100 a month cheaper (Getresponse $165/month, Aweber $69).

I contacted support of both providers and found out that Getresponse banned crypto related emails and content as per their terms of service too.
Aweber, on the other hand confirmed, that crypto related content is allowed (as of writing this)

https://i.imgur.com/GDHYv1R.jpg

hope this helps