Beta mail vs Faivelo

451 Mail takes the IMAP protocol and puts a new spin on a very old protocol. A unique visual interface allows you to hide, delete and blacklist individual users and entire domains. Notifications from the 451 publishing system follow the mail protocol, but with custom headers and custom bodies that create a fully distributed system for 451 notification. Parties can give signed referrals that introduce a party and push an email into the inbox owner's awareness. Comments associated with 451 publications can flow through the client also, leveraging email to create an advanced communication system.

Faivelo brings your custom-domain email to your iPhone. Sign in with any mailbox on your Faivelo domains and get a fast, focused inbox — read, write, and manage mail from you@yourdomain.com without the clutter. • Clean, native inbox built for iPhone • Compose with photo attachments and contact suggestions • Multiple mailboxes, switch in a tap • Search across your messages • Calendar built in Mailboxes and domains are set up on faivelo.com; the app signs you in to mail you already have.