Shutdown
Current service notice says Inboxbooster has shut down and directs users to email for recommendations on other tools.
SourceCompany research
Public company, workplace, funding, and market signals
Updated Jul 30, 2026
Overview
Inboxbooster was a YC W17, San Francisco email deliverability startup that tested inbox placement, DNS/authentication, domain reputation, and content triggers, with consulting plans for harder cases; public pages now indicate the service has shut down and the domain is for sale.
Primary product
Email deliverability monitoring and inbox-placement testing platform
Founded
2016
Headquarters
San Francisco, California, United States
Team size
2-10 employees
Industry
IT Services and IT Consulting
Sub-industry
Email deliverability software
Business model
freemium
Open Positions
0 jobs at Inboxbooster
No open positions
Check back later for new openings