Allegrow is a B2B email verification tool designed to clean email lists, avoid spam traps, and boost deliverability. It goes beyond traditional methods like SMTP checks by offering contact-level verification on catch-all servers, ensuring accurate results for high-volume B2B lists. With features like spam trap detection, MX record verification, and bulk CSV uploads, Allegrow helps businesses improve email reputation and avoid harmful prospects. The platform offers GDPR-compliant and SOC 2-certified verification, making it secure for enterprise use. Allegrow provides lifetime access plans starting at $59, with unlimited verifications and bonus upload credits, eliminating the need for a credit-based model. Users can upgrade or downgrade plans within 60 days and benefit from AppSumo's 60-day money-back guarantee. Founded in 2021, Allegrow has helped businesses prevent harmful contacts and improve sales pipeline conversion rates by targeting real prospects and avoiding spam filters.