Catch-all check

A catch-all domain accepts every address, including a made-up one. A regular check can't tell whether your address is real there, so the verdict is Catch-all. The catch-all check is an extra step you can run on those results to get a clear valid or invalid answer.

How it works

• It only runs when you ask. BounceOwl never runs it automatically.
• It is available on results marked Catch-all.
• A clear valid or invalid answer costs 5 credits per address.
• Unclear answers, and checks with no answer within 30 minutes, are refunded.
• If a clear answer for the same address exists from the last 7 days, it is reused for free.

Check one address

1. Open a Catch-all result, on the Check page or by clicking its row in History.
2. Click Run catch-all check (5 credits) at the bottom of the result card.
3. The card shows that the check is running and updates when the answer arrives. The answer usually arrives within a few minutes.

Check several addresses from History

1. Open History and click the Catch-all filter.
2. Tick the box next to each address you want checked.
3. A bar appears with the number selected and the most it can cost. Click Run catch-all check.

The Catch-all check column in History shows Running while the check is in progress, then the answer.

Check every catch-all address in a list

1. Open the finished list from Lists.
2. If the list has catch-all addresses, a panel shows how many and the most it can cost. Click Run catch-all check.
3. The answers appear in the bo_catchall_check column when you download the results.

Known catch-all domains

Once a domain is known to be catch-all, the next address there is marked Catch-all for free for 7 days, without a live check. You can still run a catch-all check on that address if you need a firmer answer.

From the API or MCP

Developers can start catch-all checks with POST /v1/catchall. AI assistants connected over MCP can use the catchall_check tool. See the API docs and Connect an AI assistant.

Related

• What the verdicts mean
• Why a result was free