droplr.fm
Start free
Menu

Bring your own Spotify app

Short version: a Spotify library pre-save works for 5 fans per Spotify app. It's a VIP extra, not the main pre-save, so the button is hidden from the public unless you switch it on.

droplr.fm has two kinds of pre-save:

  • Email pre-save (every plan, every fan). The fan leaves an email and picks where they listen. At your send hour (9am by default) in their own timezone on release day, they get an email that leads with their store. The page also has a Follow on Spotify button, which works for everyone and puts future releases in front of them in Spotify. None of this is limited by Spotify's API.
  • Spotify library pre-save (Artist Pro and label plans, your own Spotify app, 5 fans). The fan logs in with Spotify and the release is added to their library, and the artist followed, when it unlocks in their timezone.

The limit you need to know

Since February 2026, Spotify apps in Development Mode work for a maximum of 5 users. You add each one by hand in the Spotify dashboard, and the app owner needs Spotify Premium. Quota is counted per developer account. Going past 5 users needs Spotify's Extended Quota, which Spotify currently reserves for established, scalable businesses. So for most labels, BYO auto-save is for testing, VIPs and your own team, and email is the pre-save for everyone else.

Any fan who isn't allowlisted and taps "Pre-save on Spotify" gets sent back to the page with a prompt to use email.

Setup

  1. Open developer.spotify.com/dashboard with the Premium account that will own the app → Create app.
  2. Name it after your label, tick Web API, and add Redirect URIs:
    https://droplr.fm/api/spotify/callback
https://listen.yourlabel.com/api/spotify/callback   (if you use a custom domain)
  3. Open the app's Settings and copy the Client ID and Client Secret.
  4. In droplr.fm: Admin → Integrations → paste both → Save & verify.
  5. In Spotify: User Management → add the name + Spotify email of each person who should be able to pre-save (up to 5).

What happens on release day

  1. The hourly job sees the release is live and looks up Apple Music and Deezer from the release's UPC/ISRC, retrying for up to 72 hours.
  2. For each Spotify pre-save it refreshes the fan's token and calls PUT /v1/me/library with the album URI and the artist URI (that's the follow). If the new endpoint isn't available it falls back to the legacy album, track and following endpoints. A 429 backs off. QUOTA_EXCEEDED pauses the job until the next hour.
  3. Every fan who consented to email gets the release-day email.

Scopes requested

user-library-modify, user-follow-modify, user-read-email. Refresh tokens are encrypted with AES-256-GCM.