Is sfletter.com valid?

Domain: sfletter.com

Valid: Yes

This domain is valid and should be able to receive e-mail.

Tested MX: sfletter.com (212.158.162.117)

Using MX pointer sfletter.com from DNS with priority: 10

Block: No

You do not need to block this domain for signups/registrations.

Disposable: No

This does not look like a temporary/disposable e-mail domain.

Raw API reason:

DO NOT SCRAPE THIS DATA, USE THE API

No anomaly detected

START USING FREE API