17.0
Hunter is an email outreach platform for people in marketing, sales, recruiting and other work that involves contacting people by email.
Free planWebAPIExtension
Alternatives to Kickbox
26.9
MailboxValidator checks email addresses and mailboxes to help identify invalid addresses and reduce email bounces.
Free planWebAPI
36.8
APILayer Marketplace is a public API marketplace for discovering, integrating, and managing APIs across categories such as machine learning and financial data.
Free planWebAPI
- 4
Emailable
Emailable verifies email addresses to help keep mailing lists clean and improve deliverability.
Free planWebAPI6.8From $32.30 a month - 5
QuickEmailVerification
QuickEmailVerification checks whether email addresses are valid and deliverable, helping businesses reduce bounces.
Free planWebAPI6.8Free plan - 6
Email Hippo
WebAPI6.5From $9.88 a month - 7
CaptainVerify
WebAPI6.4From $36 a month - 8
Clearout Email Verification
Clearout Email Verification checks email addresses individually, in bulk, or through an API to help reduce bounces and keep lists clean.
WebAPIExtension6.2 - 9
DeBounce
DeBounce checks email addresses for syntax, domain, mailbox, catch-all, and other issues.
Free planWebAPI6.1Free plan - 10
XVerify
XVerify checks email addresses, phone numbers, and postal addresses to help improve data quality and email deliverability.
WebAPI6.1$5 one-time - 11
Proofy
WebAPI6.0$5 one-time - 12
NeverBounce
NeverBounce
5.0From $49 a month