Message

A message represents a single email that has been generated by a Message Template and sent to a single recipient.

Status

A message can have the following statuses:

Status Description
Draft The message has been created but not sent.
Sending The message is in the process of being sent.
Dropped The messaged failed to be delivered.
Delivered The receiving server accepted the message.
Deferred The receiving server delayed acceptance of the message. Reattempts will be done for up to 72 hours.
Bounced The receiving server denied the message. The most common reason an address will bounce is that the address in question is not valid.
Opened The email has been viewed with images turned on.
Clicked A hyperlink in the email has been clicked.

Info

See Send Grid article for more information.