The result field may contains four values: 'ok', 'unknown', 'smtp-failed', 'bad'. The 'ok' value means that the
email successful passed through the SMTP check, DNS check, and this email address isn’t
disposable. The 'bad' value means that some of this checks (except SMTP check) were failed. The 'smtp-failed' value
means the email address does not exist on the target SMTP server or temporary couldn't receive messages.
The 'unknown' value means that email hosting supports "catch all feature".
Check to see if the email address is from a free email provider like Gmail or not. This value will
be 'false' if the email address is not free, and 'true' otherwise. May be 'null' for invalid or
non-existing emails.
disposableCheck
Tells you whether or not the email address is disposable (created via a service like Mailinator).
This helps you check for abuse. This value will be 'false' if the email is not disposable, and
'true' otherwise. May be 'null' for invalid or non-existing emails.
catchAllCheck
Tells you whether or not this mail server has a “catch-all” address. This refers to a special type
of address that can receive emails for any number of non-existent email addresses under a particular
domain. Catch-all addresses are common in businesses where if you send an email to [email protected] and
another email to non-existent [email protected], both of those emails will go into the same inbox.
Possible values are 'true' or 'false'. May be 'null' for invalid or non-existing emails.
