The Problem
On two fronts for family or small biz, the month-to-month is a bit of a pain. One, monthly is a pain to deal with with our books. Second, if we want to move all of our users to Mailspring and utilize Pro, it cannot cost more than the entire email service we use now per user. An annual commitment would allow the typical discount and make it more feasible to attract small business / groups.
Proposed Solution
Offer an annual plan with the typical 2 months free for an annual subscription. It would guarantee that an account is paying for a minimum of 10 months every year.