Direct Software Information

Stop losing valid contacts to "Unknown" data. Allegrow is the Highest Quality B2B Email Verifier built to help data providers & GTM teams increase data quality, prevent bounces, and unlock pipeline hidden behind enterprise and catch-all servers. Legacy verification tools rely on outdated SMTP pings that fail on modern B2B infrastructure. They mark 30% of your list as "Unknown", miss hidden spam traps, and fail to validate Secure Email Gateways (SEGs). Allegrow is the enterprise-grade solution to this challenge. We use a proprietary signals-based engine to navigate catch-alls & enterprise servers protected by secure gateways like Proofpoint & Mimecast, giving you accurate, conclusive results where others leave you guessing. Why data providers and enterprise GTM teams choose Allegrow: - Conclusive 'Valid'/'Invalid' status responses on catch-all domains to safely expand your TAM - Verify enterprise mailboxes hidden behind the world’s toughest spam filters - Distinguish the primary operational email from unmonitored secondary aliases - Flag modern spam traps, disposables, and dead mailboxes - Custom API speeds for both Synchronous and Asynchronous builds - Customizable verification method mix for data providers (SMTP vs. Signals-Based) - Block risky sends automatically via native integrations with HubSpot, Outreach, and Salesloft. - Unlimited email verification (no credit limits via integration or CSV) - Managed High-Quality IPs for greylisting resolution - Fully GDPR & SOC 2 Compliant - Access a complete deliverability suite to monitor inbox placement, A/B test content against filters, and automate mailbox warm-up Trusted by publicly traded B2B companies and the world's largest data providers. Visit our website to start a 14-Day Free Trial. Verify 1,000 of your toughest contacts to see for yourself how our best-in-class verification solves the "Unknowns" that legacy verifiers can’t.