Erase recipients' email data

**This operation allows you to delete your recipients' personal email data** The Delete Recipients' Email Data operation accepts a list of 5,000 `email_addresses` or a total payload size of 256Kb per request, whichever comes first. Upon a successful request with this operation, SendGrid will run a search on the email addresses provided against the SendGrid system to identify matches. SendGrid will then delete all personal data associated with the matched users such as the recipients' names, ...