Mailto: Body formatting [duplicate]

Answer 1

From the first result on Google:

mailto:name@domain.e_t?subject=Header&body=This%20is...%20the%20first%20line%0D%0AThis%20is%20the%20second

Answer 2

Use %0D%0A for a line break in your body

• How to enter line break into mailto body command (by Christian Petters; 01 Apr 2008)

Example (Demo):

<a href="mailto:someone@example.com?subject=Suggestions&body=name:%0D%0Aemail:">test</a>​
                                                                  ^^^^^^

Answer 3

Forget it; this might work with Outlook or maybe even GMail but you won't be able to get this working properly supporting most other E-mail clients out there (and there's a shitton of 'em).

You're better of using a simple PHP script (check out PHPMailer) or use a hosted solution (Google "email form hosted", "free email form hosting" or something similar)

By the way, you are looking for the term "Percent-encoding" (also called url-encoding and Javascript uses encodeUri/encodeUriComponent (make sure you understand the differences!)). You will need to encode a whole lot more than just newlines.