Stages of Secure Email
Created - Once the record is created
Processing - API call is made to send the email
A Process runs after 1 min to check the status on the Email.
Delivered - If delivered successfully, Delivery Status will be Delivered. If the customer has opened the email within that time, Opened Status will have opened. (Delivered Time and Opened Time will be updated accordingly)
Failed - In case the delivery fails due to error, soft bounce, hard bounce, Delivery status will have a reason of the failure.
We have a scheduled Batch that runs every 1 hour to check the Emails which are either stuck in Processing or are Delivered but not opened from past N days. Here N is configurable and can easily be configured in the Custom Setting.
Different Delivery Status - It will return one of the following strings for each message delivery.
"processing" "TLS not offered, sending via Secure Portal" "soft bounced" "soft bounced - mailbox full" "hard bounced" "Internal error. Please check back later." "delivered" "delivered via secure portal"