Mailercloud

I've got some pros and cons with Mailercloud:

PROS
- Great price
- Decent UI
- Capabilities as advertised
- Can connect other apps via API

CONS
- Connecting with Google Domains is clunky (but still possible)
- Email builder tool is unnecessarily difficult to use. Wish it was more like Klaviyo's builder.
- Support staff hasn't been available during US business hours
- Their support chat bot answers literally 0 questions. It's useless.

I think this is still worth the purchase. Most of the drawbacks are related to customer support and customer education. So if you're willing to do it without much hand-holding, then you'll love the robust functionality and the price.