Checks up to 100 email addresses or domains at once in a single call, which is far more efficient than calling the single-item tools in a loop. Provide a mixed list in items: entries containing an @ sign are sent as email addresses, and all other entries are sent as bare domains. A disposable address is a throwaway or temporary inbox (for example from a burner mail service) that someone uses to receive a single signup message and evade normal registration requirements, rather than a real, ongoing mailbox. In the response, disposable is the core true or false verdict. action is the recommended handling: allow, warn, or block, based on the caller's own account policy. Extra opt in signals may also be present: mx_valid (whether the domain's mail servers accept mail at all), relay (a forwarding or catch all style address rather than a dedicated inbox), public_domain (a well known free provider such as Gmail or Outlook), and did_you_mean (a likely intended domain when the one given looks like a typo). This tool always fails open: if a network problem, timeout, rate limit, or server error prevents a real check, the call still succeeds and returns checked false with action allow, plus a note explaining the check could not be completed. Treat that outcome as inconclusive, never as evidence the address is safe.

Checks a single bare domain (no local part, for example when only a company's domain is known and not a specific address) to see whether it is disposable. A disposable address is a throwaway or temporary inbox (for example from a burner mail service) that someone uses to receive a single signup message and evade normal registration requirements, rather than a real, ongoing mailbox. In the response, disposable is the core true or false verdict. action is the recommended handling: allow, warn, or block, based on the caller's own account policy. Extra opt in signals may also be present: mx_valid (whether the domain's mail servers accept mail at all), relay (a forwarding or catch all style address rather than a dedicated inbox), public_domain (a well known free provider such as Gmail or Outlook), and did_you_mean (a likely intended domain when the one given looks like a typo). This tool always fails open: if a network problem, timeout, rate limit, or server error prevents a real check, the call still succeeds and returns checked false with action allow, plus a note explaining the check could not be completed. Treat that outcome as inconclusive, never as evidence the address is safe.

Checks a single email address to see whether it is disposable. A disposable address is a throwaway or temporary inbox (for example from a burner mail service) that someone uses to receive a single signup message and evade normal registration requirements, rather than a real, ongoing mailbox. In the response, disposable is the core true or false verdict. action is the recommended handling: allow, warn, or block, based on the caller's own account policy. Extra opt in signals may also be present: mx_valid (whether the domain's mail servers accept mail at all), relay (a forwarding or catch all style address rather than a dedicated inbox), public_domain (a well known free provider such as Gmail or Outlook), and did_you_mean (a likely intended domain when the one given looks like a typo). This tool always fails open: if a network problem, timeout, rate limit, or server error prevents a real check, the call still succeeds and returns checked false with action allow, plus a note explaining the check could not be completed. Treat that outcome as inconclusive, never as evidence the address is safe.