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Email Domains Starting with U - Page 2

Search email domains by risk status

Search and browse email domains classified by RiskMail. Identify temporary/disposable domains and safe email providers.

Jump to All 0–9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
letter U
u-img.com
No MX
Safe
u-india.com
Business Domain
Safe
u-jej-stop.blogspot.com
No MX
Safe
u-k-granny-lover.tumblr.com
No MX
Safe
u-k.company
No MX
Safe
u-kash.com
Business Domain
Safe
u-kiss-lovers-united.tumblr.com
No MX
Safe
u-komi.com
Business Shared MX
Safe
u-l-t-r-a.com
Business Domain
Safe
u-labs.de
No MX
Safe
u-lan.ru
Business Domain
Safe
u-launcher.com
Business Domain
Safe
u-lead.it
Business Shared MX
Safe
u-life.top
No MX
Safe
u-link.fr
Business Domain
Safe
u-long.com
Business Domain
Safe
u-ltra.xyz
No MX
Safe
u-m.company
No MX
Safe
u-mall.com.tw
Business Domain
Safe
u-mama.ru
Business Domain
Safe
u-markets.org
No MX
Safe
u-media.net
No MX
Safe
u-mee.com
Business Domain
Safe
u-meet.com
No MX
Safe
u-mob.cn
No MX
Safe
u-n-i-sex.tumblr.com
No MX
Safe
u-n.cz
Business Shared MX
Safe
u-nas.com
Business Domain
Safe
u-net.co
Business Shared MX
Safe
u-net.com
Business Domain
Safe
u-net.net
No MX
Safe
u-news.com.ua
Business Domain
Safe
u-next.com
Business Shared MX
Safe
u-nicks.skynetblogs.be
Business Domain
Safe
u-note.me
Business Shared MX
Safe
u-on.eu
Business Domain
Safe
u-on.ru
Temporary / Disposable
u-ov.info
Business Domain
Safe
u-p-s-k-i-r-t.tumblr.com
No MX
Safe
u-p.pw
Business Domain
Safe
u-paris.fr
Business Domain
Safe
u-paris10.fr
Business Domain
Safe
u-paris2.fr
Business Shared MX
Safe
u-pec.fr
Business Shared MX
Safe
u-pem.fr
Business Domain
Safe
u-perv.tumblr.com
No MX
Safe
u-picardie.fr
Business Domain
Safe
u-pick.io
Business Shared MX
Safe
u-ping.co.kr
No MX
Safe
u-planner.com
Business Shared MX
Safe
u-plastby.ru
Business Domain
Safe
u-platform.by
Business Domain
Safe
u-playtv.com
No MX
Safe
u-porno.com
Business Shared MX
Safe
u-porno.pro
No MX
Safe
u-porno.top
Business Domain
Safe
u-power.it
Business Domain
Safe
u-proxy.com
No MX
Safe
u-psud.fr
Business Domain
Safe
u-r-g.com
Business Domain
Safe
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Explore domain risk signals used by the RiskMail API

The RiskMail domain directory is a public reference for email domains we have classified. Every entry is one of two states: Temporary / Disposable (a known throwaway-mail provider) or Safe (a free public email provider, a regular business domain with valid mail infrastructure, or a domain we have not yet seen disposable signals for).

If you operate a signup or login flow, this list is a starting point — disposable providers come and go faster than any static list can track. The RiskMail API reflects the live database in real time and returns a clean verdict: disposable | safe for each request.

See something missing or misclassified? Tell us and we'll re-evaluate the domain.