# Dropbox’s two-sided referral rewards

> Extra storage rewarded both the person inviting a friend and the new user.

- Owner: Dropbox
- Kind: App & software
- Sector: Technology
- Seed date: 2008-09-11
- Milestone date: Apr 2010
- Date basis: Documented milestone; not a measured attention peak. Dates use the stated precision; chart positions are date anchors.
- Spread Score: 40 (Notable, provisional), v1.2
- Mechanics: Shareable output, Visible in use

## Summary

Dropbox rewarded invitations with extra storage for both participants. In April 2010, Drew Houston reported 2.8 million direct invitations in a trailing 30-day window and attributed 35% of daily signups to the referral program.

## Timeline

- 2008-09-11 — Dropbox (Open web) — Dropbox became publicly available after its TechCrunch50 launch.
- 2009-10-02 — Dropbox / Common Craft (Open web) — Reported two million users; its referral landing page featured a Common Craft explainer for new users.
- Apr 2010 — Milestone: Dropbox (Open web) — Houston reported 2.8 million direct referral invitations in a trailing 30-day April reporting window.

The full timeline, metrics and sources are on the case page, or via the Pro API (https://howitspread.com/developers).

Canonical URL: https://howitspread.com/cases/dropbox-referral-rewards

Cite as: How It Spread (2026). “Dropbox’s two-sided referral rewards.” Case HIS-01075. Spread Score v1.2: 40/100. Updated 2026-10-17. https://howitspread.com/id/HIS-01075