Email

4 dead or acquired startups in Email with completed research reports.

Every startup playbook in our database, ready to build

Each deep-dive includes a post-mortem, step-by-step rebuild plan, and a technical spec you can paste straight into Claude Code, Cursor, or Lovable.

W11

Acquired

API

Email API service.

Dead simple blogs by email

Email search for iPhone. Acquired by Google in Feb 2010.

Brings dozens of SaaS's (Mailchimp, Stripe, Shopify, Salesforce,…