Burner domains / brushemail.com network

sharedmailbox.org is a disposable email domain

Our harvester recorded sharedmailbox.org on 14 Oct 2026. Its MX records point at a burner mail host. Open lists of disposable email domains carry it. We did not test delivery or count real signups.

What we have recorded

Listed by
  • the disposable-email-domains open list
  • the ivolo/disposable-email-domains open list
First seen by our harvester
14 Oct 2026
Last seen by our harvester
14 Oct 2026
Mail servers (MX)
  • ereg4.brushemail.com
  • wreg4.brushemail.com
Looked up on 14 Oct 2026.
Burner mail network
Its mail server belongs to brushemail.com, which our harvester classifies as a burner mail host. 116 other domains we track use it.

Listed by mistake? Open an issue on GitHub with the domain and the real mailbox provider it belongs to.

What our checker answers

A signup with an address at sharedmailbox.org, checked on the email alone with today's data: block

  • disposable_domain: sharedmailbox.org is a known disposable email domain
  • burner_mx: sharedmailbox.org receives mail at ereg4.brushemail.com, a known disposable mail host

signupbouncer runs this check on new signups to your app, through a Supabase auth hook or the REST API. Get a free API key or read the docs.

Other domains on the brushemail.com network

All 117 domains on this network

Check any email address

Paste an email address, and an IP if you have one. No account needed. The disposable email checker page explains each check.

We do not store the email or IP you type, and keep no history of your checks. The email's domain stays in our DNS cache for up to an hour, a hash of your own IP address is kept for up to 24 hours for rate limits, and we count how many checks end in allow, challenge or block each day. Details.