Sendoso
Sendoso is a leading B2B corporate gifting and direct mail platform, founded in 2016 and based in San Francisco, California. The company helps revenue, marketing, and customer teams engage prospects and customers at key moments in the buyer’s journey.
Proven Score (provisional)
Emerging. Based on Proven marketplace listings, member redemption clicks, years in business, market standing, verified clients and connected data, scaled to 100. Client quality (20 points) is added once publicly named clients are verified. Checked 2026-10-21.
Company facts
| Founded | 2016 (10 years) |
| Latest funding | Series C |
| Employees | 400 |
| Headquarters | San Francisco, United States |
| Trusted networks on Proven | 2 investor, bank and government networks offer Sendoso to their members |
| Member offers on Proven | 1 |
| Member redemption clicks | 2 |
Company facts from Apollo.io company data. Network, offer and redemption data from the Proven platform. A Proven Score is published once publicly named clients are verified with sources.
Discounts for Proven network members
3-month Free on Our Starter Plan
Members redeem through their investor or bank's Proven marketplace. Terms vary by network.
Competitors in Advertising & growth
Source: Proven platform data, public records and vendor websites. Vendors cannot pay to change a score. Methodology. Updated 2026-10-21.