Heybounce

About Heybounce

Heybounce is an email validation service offering both bulk list verification and a real-time verification API. The bulk verifier accepts CSV and XLSX uploads for cleaning existing mailing lists, while the API allows developers to check individual email addresses at signup or point of collection, returning data such as deliverability status, domain and MX record checks, disposable/role/free-email/academic detection, and SMTP mail server verification.

The service targets developers integrating email validation into applications and marketing teams maintaining mailing lists, aiming to reduce bounce rates and protect sender reputation. Additional detection capabilities include accept-all (catch-all) domains, mailbox-full status, no-reply addresses, spam traps, and high-risk keywords or TLDs. Accounts support adding team members to collaborate, and credits for results returned as "unknown" are refunded rather than charged.

Key features

• Bulk email list verification via CSV/XLSX upload for cleaning mailing lists
• Real-time email verification API for validating addresses at sign-up
• SMTP, syntax, and domain validation to confirm deliverability
• Disposable, role-based, free-email, and academic email detection
• Spam trap and complainer database removal, plus risk and MTA validation
• Team accounts for collaborating with multiple members on one account

Frequently asked questions