Free Catch-All (Accept-All) Domain Checker & Risk Analyzer
Test if a corporate domain is configured as a Catch-All server. Prevent silent bounces and protect your sending domain reputation before launching campaigns.
Why Cold Outbound Teams Use Our Free Catch-All Checker
Catch-all server configuration detection
Bounce risk severity grading
Guidance for sending to accept-all domains
Email Deliverability Standards (US & UK Outbound Guidelines)
In February 2024, Google Workspace and Yahoo introduced strict anti-spam enforcement rules that mandate proper SPF, DKIM, and DMARC authentication for all outbound mailboxes. If your DNS records have syntax errors or exceed the 10-lookup threshold, incoming mail servers will silently route your cold outreach into the Spam folder or reject connections entirely.
Requires valid physical postal address in signatures, accurate From header identification, and clear opt-out mechanics.
Permits B2B outreach under legitimate interest when targeted to relevant corporate decision-makers with authenticated sender identity.
Frequently Asked Questions About Catch-All Checker
What is a Catch-All domain and why is it dangerous for cold email?
A catch-all (accept-all) mail server is configured to accept incoming emails to ANY username, even if that person does not exist. Days later, their internal security gateway rejects the message, generating delayed bounces that ruin your sender reputation.
How should cold outreach teams handle catch-all domains?
Limit catch-all contacts to no more than 15% of your daily outbound campaign volume, and verify prospect LinkedIn activity to ensure they are still active at the company.
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Get fully authenticated, pre-warmed business inboxes on your own domains with dedicated US & UK IPs for just $4.00/mailbox/month.