Background of the issue:
I received an alert that says: "Process emails in background" option is enabled. WPML string translation may not work as expected for email templates. Please disable this option to send translated strings in emails.
Symptoms:
WPML string translation may not work as expected for email templates due to the "Process emails in background" option being enabled.
Questions:
What does the "Process emails in background" option mean?
How can I disable the "Process emails in background" option to ensure WPML string translation works for email templates?