اس کنٹرول میں ترمیم کرنے سے یہ صفحہ آٹومیٹک طریقے سے اپڈیٹ ہو جائے گا

Send attachments to Windows users in Mail on Mac
Try these suggestions for sending email attachments to Windows users.
To send Windows-friendly attachments for all messages, choose Edit > Attachments, then select Always Send Windows-Friendly Attachments.
To send Windows-friendly attachments for a single message, click
in the toolbar of the new message window, then select Send Windows-Friendly Attachments (if the tickbox isn’t shown, click Show Details).
Send documents as PDFs instead of in their original format.
Use filename extensions (such as .docx for a Microsoft Word document).
If a Windows user receives two attachments (such as “MyFile” and “. _MyFile”), they can ignore the file with the underscore.