Thank you!
One question: translations for both "delivery" and "read" receipts are identical (menu items) or very close (indicators that this option is turned on).
<string name="new_message_menu_read_receipt">Demander accusé de réception</string>
<string name="new_message_read_receipt_prompt">Accusé de réception demandé</string>
<string name="new_message_menu_delivery_receipt">Demander accusé de réception</string>
<string name="new_message_delivery_receipt_prompt">Demande d'accusé de réception</string>
Delivery reports are currently disabled (not present in the UI), but just in case..
"delivery" reports (receipts) are sent back by the recipient's mail server, and indicate that a message made it to the recipient's mail server, but wasn't necessarily downloaded to the user's email app, or read, or understood.
"read" reports (receipts) are sent back by the recipient, if he/she wishes to (prompt in the UI), and mean that a message was actually shown to the recipient