LeadSpend's real-time email validation service accurately identifies undeliverable (bounces) and invalid email addresses. We validate email addresses on the registration form, from the back end through our API, or via FTP for list hygiene.
With this insight, marketers can prompt users who entered an invalid email address to reenter a valid one. They can also avoid sending email to invalid addresses, improving their sender reputation and inbox placement rates. Pricing is pay-as-you-go, per-query, with rate discounts depending on monthly volume.