code: func (c *SES) SetIdentityMailFromDomain(input *SetIdentityMailFromDomainInput) (*SetIdentityMailFromDomainOutput, error) {
  	req, out := c.SetIdentityMailFromDomainRequest(input)
  	return out, req.Send()
  }
docs: // SetIdentityMailFromDomain API operation for Amazon Simple Email Service.
  //
  // Enables or disables the custom MAIL FROM domain setup for a verified identity
  // (an email address or a domain).
  //
  // To send emails using the specified MAIL FROM domain, you must add an MX record
  // to your MAIL FROM domain's DNS settings. If you want your emails to pass
  // Sender Policy Framework (SPF) checks, you must also add or update an SPF
  // record. For more information, see the Amazon SES Developer Guide (http://docs.aws.amazon.com/ses/latest/DeveloperGuide/mail-from-set.html).
  //
  // You can execute this operation no more than once per second.
  //
  // Returns awserr.Error for service API and SDK errors. Use runtime type assertions
  // with awserr.Error's Code and Message methods to get detailed information about
  // the error.
  //
  // See the AWS API reference guide for Amazon Simple Email Service's
  // API operation SetIdentityMailFromDomain for usage and error information.
  // See also, https://docs.aws.amazon.com/goto/WebAPI/email-2010-12-01/SetIdentityMailFromDomain