Review on Mail-in-a-box by Bill Howard

It's very simple to deploy, manage & configure through an API gateway from any language (NodeJS/GoLang).

We use it for sending emails via our webhooks after receiving events such as payment or order completion etc., which can be done using various integrations like Zapier out there but they are not free so we were looking at something that would allow us do send these without paying extra costs every time someone receives one event - hence why MAIB came into play! The UI is also pretty good too if you're familiar enough wth AWS already otherwise I'd recommend setting up everything yourself first before trying anything else since their documentation leaves much room open even though its quite straight forward once setup properly :) Have been able solve many problems by just deploying them quickly rather than waiting around until support gets involved when things go wrong again :D.