Is mailer.com valid?

Domain: mailer.com

Valid: Yes, but should be blocked

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

Tested MX: mailer.com (54.70.84.55)

No MX-pointer in DNS record. Using domain: mailer.com

Block: Yes

You should block this domain for signups/registrations.

Disposable: Yes

This looks like a temporary/disposable e-mail domain.

DO NOT SCRAPE THIS DATA, USE THE API

Detection method: Advanced heuristics

This domain was blocked heuristically. Unknown domains are automatically analyzed and tagged with our advanced algorithms.

Raw API reason:

Disposable

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