The action that you want Amazon Pinpoint to take if it can't read the required MX record when
you send an email. When you set this value to
UseDefaultValue, Amazon Pinpoint uses
amazonses.com as the MAIL FROM domain. When you set this value
RejectMessage, Amazon Pinpoint returns a
error, and doesn't attempt to deliver the email.
These behaviors are taken when the custom MAIL FROM domain configuration is in the
The verified email identity that you want to set up the custom MAIL FROM domain for.
The custom MAIL FROM domain that you want the verified identity to use. The MAIL FROM domain must meet the following criteria:
It has to be a subdomain of the verified identity.
It can't be used to receive email.
It can't be used in a "From" address if the MAIL FROM domain is a destination for feedback forwarding emails.
The input for PutEmailIdentityMailFromAttributesCommand.