I built this tool last spring. Works like a charm, but almost no sales. How would you market it?

Maybe position it for B2C/B2B (Sendoso comes to mind): eg: send Thank you letters to customers, partners etc.

Could also be positioned for 'personal but professional' purposes: Send a letter to your mentor, first employer, etc.

Or if catering to a C2C market, designing it around special calendar events like Valentines day, Christmas etc. Perhaps a feature to enter/ import your friends birthdays and send them a letter automatically?

Also some initiation to get users to write would be helpful (templates/ onboarding assistance). Otherwise it's easy to stare at the blank letter, get the writer's block and finally give up.

Thanks for the fun exercise!

I would market it to the B2B sales crowd. I would position it as a prospecting tool that helps create another touch point for sales professionals to reach out to prospective customers, and helps them stand out from the crowd.

Our parents love paper letters. I would try to market it this way. (read - "If you love your parents, you will buy our subscription").

And very important - at the price tag as low as $2 you have to gain the number of letters sent by user (maybe, calendar integration or something) to get a higher LTV and a viable unit economy. Or switch to subscription model rather than one-time purchase.

Found Twitter treads that might be useful for you:

• https://twitter.com/gonelf/status/1440102849891864576?s=21
• https://twitter.com/AnthonyCastrio/status/1439922562839072772