Real-time single and bulk email validation (syntax, MX, 5,000+ disposable domains, SMTP).
Free
One server, in email. Real-time single and bulk email validation (syntax, MX, 5,000+ disposable domains, SMTP).
Real-time single and bulk email validation (syntax, MX, 5,000+ disposable domains, SMTP).
The rest either hold an API key issued by the publisher or ask for nothing.
Listed without a verification tick. Read the listing before installing.