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Email clients cannot block whole domains or patterns

Gmail and Outlook cannot block a whole domain, domain suffix, or sender pattern, so new spam addresses keep getting through.

Tier I · Proven The best-established problems.

7 public reports · first reported 29 May 2014 · last reported 11 July 2025

Idea report · $19 · No contacts · All sales final

See a sample idea report

What's going wrong

Owners of personal and small business mailboxes report that spam keeps arriving from new addresses on the same domain, the same top-level domain, or the same relay service.

AI-assisted: written with the help of AI from the reports. The idea report has the full summary.

In the idea report

  • The full summary.
  • The products the 7 reports are about, and how many came each month.
  • Related problems.

No business has been found with this problem yet, so the report has no contacts. All sales are final — no refunds. Pricing.