MastroSDR
An AI sales rep for small B2B teams, with a person on the send button.
It finds businesses that fit, drafts a personal first email and the follow-ups, and holds the first email to every company until a person approves it. Replies and bounces are tracked for you.
- Describe who you sell to in plain English; it only uses addresses a business publishes itself, never guessed ones
- Nothing sends without approval, and new mailboxes warm up slowly with a daily cap
- One-click unsubscribe and a do-not-contact list checked before every send
- An MCP server and API, so an assistant like Claude can draft and review with you; sending is off by default
- Who uses it
- Open for sign-up. We use it for our own outreach.
- Built on
- Next.jsPostgresDrizzleStripe