I like that it is very easy to use, no problems at all. The support team was fantastic, they answered all my questions quickly. It's a bit expensive but you get what you pay for. We have solved the problem of being able to send a lot of emails in a short period of time, the ability to integrate with Jira and Slack.
The best thing about this plugin is that it allows me as an administrator, not only view but I am able too add my own content into each message so i dont have be sending them out…