In order to insert a link with email address in your newsletter text follow the next instruction.
1. Open needed newsletter settings and click Edit Template
2. Click on the text were you want make a link with email address
3. Click Link sign and type needed email inside Link field
4. Save changes – http://prntscr.com/flgz7d
Unfortunately, now it works properly only on mobile devices.
So we will try to fix it in one of the next versions of the plugin.
I will inform you about the update.