By default, the customer information (shipping and billing addresses) listed in Shopify order confirmation emails is written in honorific form for the name. If you want to address the customer by honorific such as "Mr.", you will need to edit the code to accommodate this. Here is an example of how to do this.
How to add "sama" to the customer's name in the order completion email
[Settings Step 1] Open Settings > Notifications > Order Confirmation > Edit Code
[Settings Step 2] Replace the customer information code
