I've used Mailchimp and Sendy extensively. I send about 200k-300k emails a month. Here are the pros and cons: Mailchimp: if price isn't an issue for you, use M

I've used Mailchimp and Sendy extensively. I send about 200k-300k emails a month. Here are the pros and cons: Mailchimp: if price isn't an issue for you, use Mailchimp. Period. The deliverability and customer service is unmatched. The interface is easy to use. No setup. High customization with merge tags. If you're sending a lot of emails and want them to "just get delivered without any hassle", use this. Sendy: it's a lighter version of Mailchimp and super cheap. Much less customization. No live support (but the guy responds to his email really fast and always helpful). Configuration is a bit painful (you have to setup SES, wait 1-2 days for domain approval, install Sendy, etc), but once you set it up, it's a breeze to use. I haven't noticed any deliverability issues, but supposedly it's less reliable than more established email senders. If you just run a personal newsletter.