Many of us might have used mailto function just like below (passing only the mail id):
But there are other parameters also you can send it along with that, those are:
And one more important thing, you can also send to multiple recipients (see the below example):
mailto: email@example.com, firstname.lastname@example.org
Now lets form the entire structure including all the above parameters
Make sure you have encoded the text in Subject line and Body. You can see there is a %20 between texts in subject and body right?. Its nothing but space between the texts.
For your convenience, I have given an example code. Just copy and paste and have a try: