MailerLite Classic

This is the worst app. I switched from MailChimp, which I'd used for 2+ years without issue because they stopped supporting Shopify. I spent a week moving my list over, setting up pop-ups, landing pages and syncing it to my site. I sent one email during this time. The whole time (a week) I used it, I was getting a lot of suspicious sign-ups to my list, but MailerLite didn't filter robo-sign-ups like MailChimp, so I enabled double-opt-in and it fixed the issue. I had slowly started to cull the weird signups when my account was terminated for "sending spam." No notice, no way to re-up my account. Waste of money and a waste of time.