Is there a discount for annual vs monthly licensing?

Annual billing works out to roughly 2 months free compared to paying monthly for the same tier (about a 17% discount overall). If you're confident you'll be using SubsiMail long-term, annual is the better deal financially. If you're still evaluating fit, monthly gives you more flexibility to adjust or cancel without losing a prepaid year — the 30-day refund window applies to either billing cycle if you decide it's not for you early on.