Add Return Email Mailto Link In Email. Click Marketing Content Emails in SharpSprings top toolbar. Use the hyperlink manager to insert the mailto link as normal.
Followed by the desired email address in the URL field. Click Plus Link. This tells the email client not to wrap the url.
Add the parameters to the mailto link so the recipients email client can use them to pre-fill the email.
You can also use the Ctrl K key combination which works in most email clients. This tells the email client not to wrap the url. Under Link to click E-mail Address. In Firefox you can also specify which client should handle mailto links.