Firefox Relay
8.0#1 in mobile browser softwareFree planFree planAndroidiOSWebAPI
VisitFirefox Relay suits people who want to use masked contact details for sign-ups and forward messages or calls without sharing their real details. Its dashboard and browser extension offer ways to manage masks, while phone masks and anonymous email replies are available in paid options.
MailMask suits people who want aliases to forward incoming messages to an existing mailbox. It is intended as a personal risk-reduction layer, not for critical or account-recovery communication.