If your past email contained major mistakes, we recommend making a copy of the email. Begin the subject with the words “Updated” or “Revised”, which would indicate to the recipient that this is not the same email sent earlier. Since you will need to correct the mistakes in your email, we recommend sending a test campaign to yourself to verify if all mistakes were corrected. You can then resend your campaign.
NOTE: Some recipients may get annoyed if you send them multiple copies of an email and may report it as SPAM. To avoid this, please resend only if the email sent previously had really big problems.