Mail from Web Template : body text

Hello,

i created a button in my web template so that users can send a mail to confirm they have checked this months data. Nothing to fancy about it (not getting dynamicaly the variable values just some fixed text).

This is the code i used:

      
<FORM action="mailto:xxx@abc.com
     ?subject=I have checked and approve the data for this month
      &body=Best regards" 
      method=post encType=text/plain>
<INPUT type=submit value="I have checked and approve the data for this month"> 
</FORM>

This works fine.

Now my question : i want to have multiple lines in my body and i can't get thjis working (logic since i don't know much of HTML 😊). Anybody any suggestions?

Thanks in advance for your help!