Postmark has introduced lower pricing and monthly plans for its email service, offering more consistency and predictability for users who pay monthly instead of using credits. The new pricing model aims to save users money, with discounts ranging from 33% to 46% compared to the old credit-based system. Users can switch to monthly plans without changing their existing pricing unless they want to, and they will be grandfathered into the new system if they don't make a change. The changes do not affect delivery quality or customer support, which remain unchanged for all users regardless of how they choose to pay. Postmark has provided detailed help documents to assist with the transition, including information on switching from credits to monthly plans and understanding the new pricing model.