Is fsb4me.com valid?

Domain: fsb4me.com

Valid: Yes

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

Tested MX: fsb4me-com.safesysmail.com (204.193.139.160)

Using MX pointer fsb4me-com.safesysmail.com from DNS with priority: 10

USE THE API, DO NOT SCRAPE THIS DATA

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:

Heuristics: WM1

START USING FREE API