Question 1

How accurate is MailSift email verification?

Accepted Answer

MailSift delivers 99% accuracy by combining syntax checks, DNS & MX record lookups, SPF/DMARC validation, disposable domain detection, and live SMTP probing.

Question 2

Does MailSift offer a free email verification API?

Accepted Answer

Yes. Every account includes 500 free verification credits. After that, MailSift uses simple pay-as-you-go pricing with no monthly commitment.

Question 3

Can I verify a list of emails in bulk?

Accepted Answer

Yes. Upload a CSV through the dashboard or POST it to the bulk API endpoint. MailSift processes lists in parallel and streams progress in real time.

Question 4

What does MailSift detect?

Accepted Answer

MailSift detects invalid syntax, non-existent domains, missing MX records, disposable and temporary email providers, role-based addresses, catch-all domains, and risky deliverability signals.

Question 5

How fast is the MailSift API?

Accepted Answer

Single email verifications typically complete in under 500ms. Bulk jobs process thousands of emails per minute with live SSE progress streaming.

Get in touch

Send us a message