Passbolt is an open source credential platform for teams, with the vault running on your own server or inside the firewall. A browser extension, mobile apps and a command line tool share one encrypted set of data, sharing uses OpenPGP public keys, and private keys stay on the client.

Every signup form asking for your real address is a small wager on somebody else data handling. SimpleLogin hands out a separate forwarding address per site, passes the mail to your real inbox, and lets you switch off whichever alias starts receiving nonsense.