Show HN: SellifyMate – Automate daily Etsy sale campaigns with countdown timers

I built SellifyMate to solve a tedious daily task I kept seeing Etsy sellers complain about: manually restarting sale campaigns every day just to keep the green "Sale ends in X hours" countdown visible on listings.

Etsy's algorithm rewards active sales, and the countdown timer creates real urgency for buyers. But resetting campaigns manually every single day is annoying busywork. SellifyMate automates it with a Chrome extension that connects to your shop and runs fresh daily campaigns on a schedule.

Tech stack: Chrome extension + Laravel backend. Currently used by 4,600+ sellers.

Curious if anyone here has experience with Etsy's API limitations around sale automation — we've had to work around a few quirks.