Verifalia has been running since 2005 and returns an unusually detailed classification — not simply valid or invalid, but a specific status such as mailbox does not exist, domain has no mail exchanger, address is a catch-all, or the server applied greylisting. For developers building suppression logic, that granularity is useful.
Official SDKs exist for .NET, Java, PHP, Python, Ruby and JavaScript, alongside a web interface for bulk uploads and a WordPress plugin. Multiple quality levels trade verification speed against thoroughness, and data retention is configurable including immediate deletion.
Best suited to: development teams embedding verification in their own applications, and organisations needing configurable data retention.
Listed pricing is indicative. Final cost depends on seats, contract term and add-ons — request a quote for exact numbers.
Low-cost bulk verification with non-expiring credits and a bounce guarantee.
India-built email verification with high accuracy claims and credits that never expire.
GDPR-focused European verification service with toxicity and deliverability checks.
Fast bulk verification with automatic list monitoring and ESP integrations.
