Catch-all emails and deliverability (why they're risky)
A catch-all domain accepts mail to any address, so verification can't confirm a specific inbox exists — these are 'risky/accept-all' and can bounce or hit traps. Send to them carefully, in a separate segment.
Short answer: a catch-all (or "accept-all") domain is configured to accept email to *any* address, even ones that don't exist. That means an email verifier can't confirm a specific mailbox is real — it can only mark the address "risky / accept-all." Sending to catch-alls is riskier than verified addresses: some bounce, some are spam traps. Send to them in a separate, lower-volume segment — don't treat them as verified.
Why catch-alls matter
- Verification returns "risky," not "valid" — you're guessing the inbox exists.
- A chunk will bounce (the address was fake) → hurts your bounce rate.
- Some catch-all domains hide spam traps → blacklist risk.
How to handle them
- Segment catch-alls separately from verified addresses.
- Send low volume from a warmed mailbox; watch the bounce rate.
- Don't bulk-blast them mixed in with your clean list.
- Prune ones that bounce.
Autocloz flags accept-all addresses during verification so you can segment and pace them instead of letting them inflate your bounce rate.
> Start free — verify + segment catch-alls before they cost you placement.