Show IH: A simple tool to create pre-printed envelopes

Hello!

I recently went through the (fun?) process of mailing out wedding invitations, and discovered that it was a huge pain to figure out how to print my guests' addresses on envelopes! So I decided to write a script to take a bunch of addresses and generate a PDF that I could use with my printer at home.

https://www.envelopegenerator.com/

From there, I said "hm, maybe I should make this a website" and then "I wonder if people would be willing to pay for this convenience." So after a few weeks of work, here it is!

I used this an an excuse to learn Go, and of course am using Stripe for payments :)

Well, what do you think? Does the pricing seem reasonable? What kinds of features would make it more useful? (I have some ideas for how to add enhancements here.) Is this filling a need for anyone?

Would love feedback - happy to give people gratis access to this tool if they want to poke around!