Routines are important. I'd recommend that you start working everyday at a specific time and then when it's time to get out of work, have something else to do, in my case that's running. Set up an alarm, go change, do whatever it is, come back, shower and now you're out of work!
Others have pointed out about the free plan and I mostly agree with them.
One thing that hasn't been mentioned yet is the opportunity to position your product as the alternative for people that think mailchimp is just too much. Tell me this on the headline. "The easiest way to run your newsletter." sounds generic. Maybe something like "Write and click send, that's all it takes. No templates, no extra steps."
Finding people that want to send a simple newsletter without all the steps of mailchimp should be easier. Tell your customers early that you will handle the migration part and you might find more conversions as well.