Adding mailto hyperlinks to Power BI reports allows end-users to quickly send an email with just one click.

Due to some restrictions, users must use CTRL + click to make these links work. You can also use the Bridger to create these links.

Below you can find a sample report showing a couple of different buttons. Make sure to download the file and look at the DAX measures used for the buttons. You will see that each element of the buttons can be individually designed.