We can add custom social media icons for our signatures. The video below can help you.
You can get special social media icons from the iconfinder website.
If the icons of social networks we provide by default are not enough, you can easily add any icon/s you want.
We recommend getting icons from this site (used in the video) if you want to complement existing ones.
Otherwise, you can take a look at Iconfinder websites, which is a good source of nice social media icons of all styles.