Is aa49cko9dio9eid.mailmight.com valid?

Domain: aa49cko9dio9eid.mailmight.com

Valid: Yes

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

Tested MX: in1-smtp.messagingengine.com (103.168.172.218)

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Using MX pointer in1-smtp.messagingengine.com from DNS with priority: 10

DO NOT SCRAPE THIS DATA, USE THE API

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

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