http://22indexaezrjycsfqepiwqixftd3qfxhaowdte5mqou6rv3tebhejmqd.onion/onions/list?page=1
It uses client-side encryption to protect email content and user data before they are sent to Proton Mail s Active underdiriled6lvdfgiw4e5urfofuslnz7ewictzf76h4qb73fxbsxad.onion UnderDir The largest - #1 - up to date, hourly maintained & updated, active undernet directory.
Also, allows members to add their onion links, as well can message other members of the site.