# Allegrow documentation

Research date: 2026-09-07

Documentation coverage: not-retrieved.

Reference index, not a mirror of complete vendor documentation. Retrieved pages do not prove the MCP works.

## What it does

B2B email verification and deliverability platform - resolves catch-all/secure-email-gateway addresses that legacy verifiers mark "unknown," sends warm-up email to real B2B accounts, and runs hourly SPF/DKIM/DMARC checks with a "Safety Net" that auto-pauses sends to addresses likely to mark mail as spam.

## Access and connection

MCP support: official

Access requirements: paid - credit-based model (one credit per unique address verified); a 14-day free trial covers up to 1,000 contacts, full pricing not published.

Authentication: OAuth - connects through Claude's standard connector authorization flow; user logs into their Allegrow account and grants access explicitly (no manual API key copying).

Research checked: 2026-09-07

These details come from catalog research. Check vendor sources for current setup instructions; this is not proof of a tested connection.

## Sources

- https://www.allegrow.co/knowledge-base/claude-email-mcp
- https://www.allegrow.co/knowledge-base/complete-guide-to-email-warm-up-tools-which-increase-sender-reputation
- https://emailwarmup.com/blog/email-deliverability-tools/allegrow-review/
- https://mcp.allegrow.co/mcp

## Retrieved pages