How do I popup the compose / create mail dialog using the user's default email client?

Question

The use case is simple. At a certain point of time, I need to be able to show the user his familiar compose email dialog (Outlook or other) with

• fields like f

Answer 1

Could it be that you used the mailto: protocol?

Almost all of what you highlight can be done, but I am quite sure, that you cant do attachments.

Microsoft MailTo Documentation