4 ms·

How would that work with e2e encryption? What spam filter system would even follow ldap links?

• zaarn 5y ago
  Proton is not e2e for mails coming from outside Proton, if they aren't GPG encrypted. And in that case they apply very standard spam filters to your mail.
  • SahAssar 5y ago
    I assumed that the OP was sending from proton, to proton but looking at the screenshot again I guess that's not clear.
    • zaarn 5y ago
      Protonmail also responded in this thread with a message stating that this is in fact their spam filter.