Emails are sent using a third party email processor called SendGrid. Listed below are the SendGrid events for emails. The status of emails sent can be viewed by going to the Communication Log for the client, or the Email Dashboard.
SendGrid receives the message and prepares it to be delivered.
An email cannot immediately be delivered, but it hasn’t been completely rejected. SendGrid will continue to try for 72 hours to deliver a deferred message. After 72 hours, the deferral turns into a block.
The server cannot deliver a message. Bounces often are caused by outdated or incorrectly entered email addresses.
The receiving server accepted the message.
The email has been opened by the client.
For a detailed list of SendGrid events please refer to the following link: