Klaviyo is a Boston-based SaaS technology company that offers an AI-first, autonomous CRM platform tailored for B2C brands.
| Founded | 2012 (14 years) |
| Market standing | Publicly traded (NYSE: KVYO) |
| Employees | 2,400 |
| Headquarters | Boston, United States |
| Trusted networks on Proven | 10 investor, bank and government networks offer Klaviyo to their members |
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.
| Customer.io | Score in progress |
| Braze | Score in progress |
| Brevo (formerly Sendinblue) | Score in progress |
| Beefree | Score in progress |
| Constant Contact | Score in progress |
| Drift | Score in progress |
| CleverTap | Score in progress |
| Klaviyo | Score in progress |
| Sprout Social | Score in progress |
| Qualified.com, Inc. | Score in progress |
| beehiiv | Score in progress |
| Tofu | Score in progress |
| Attentive | Score in progress |
| Mixmax | Score in progress |
| Navattic | Score in progress |
| Wunderkind | Score in progress |
| Okara | Score in progress |
| Buffer | Score in progress |
| WebEngage | Score in progress |
| Acumbamail | Score in progress |
Source: Proven platform data, public records and vendor websites. Vendors cannot pay to change a score. Methodology. Updated 2026-10-21.