Further, Proton automatically identifies these mailing lists as “newsletters” and puts them in their own view. After unsubscribing from probably 100 mailing lists, I had at least half a dozen companies still sending me emails. I had only five email addresses that it didn’t recognize as mailing lists. When composing an email, you’ll find a handful of buttons at the bottom of the screen. My only issue with the mobile app is that it doesn’t provide the same tools for unsubscribing from mailing lists.