I use Aweber and TinyLetter (depending on my needs).
You need to evaluate your own needs to decide which mailing list provider is best for you.
I chose Aweber over Mailchimp for a few reasons: Aweber has better list segmentation and reporting, it's got excellent deliverability (some argue it's better than Mailchimp in this respect although I have seen no conclusive evidence to this - but there is no way I'm risking my business ending up in the spam folder), I like their autoresponders, its easier to use (Mailchimp confuses me), and price - above 2,000 subscribers price is about the same as Mailchimp.
As mentioned I also use tinyletter (free - up to 2,000 subscribers) for some smaller pen names who I haven't established yet.
Now, tinyletter is fine (and very easy to use), but you are limited to one list only and up to 2,000 subscribers. But it does look great and it's super simple.
Aweber is for serious marketers which is why many big name retailers use them. I use this for my main author name.
I've always believed that you should start how you want to finish, and I would *love* one day to have a huge list of super loyal fans that will buy all my new releases. (dream, dream). That's the reason in the end I went with Aweber where you are paying from day one.
Many people use Mailchimp because they are seduced by the free up to 2,000 subscribers (which I agree is a huge incentive), but I just personally don't like them as much.
But it really does come down to what your needs are.
Hope this helped,
Tracey
