One inbox, read by the person who maintains the calculators.
Replies usually land within two business days. There is no support ticket system and no phone line; email is genuinely the fastest route.
This is the most useful email you can send us. If a rate on FeeFellow does not match what a marketplace charged you, include:
Reports are checked against the marketplace's official fee pages. Confirmed errors are corrected in the calculators and recorded in the change log on the rates page.
Tool ideas from working sellers drive the roadmap. If there is a fee, margin, or pricing calculation you currently do by hand or in a spreadsheet, describe it in an email, including the marketplace and the inputs it needs. The most-requested gaps get built first.
Questions about the template bundle, affiliate placements, or this site's policies (see the privacy policy and terms) also go to the same inbox. Please do not send shop credentials, passwords, or full order exports: we never need them, and your account security matters more than any bug report.