Delta Chat is a free, open-source messaging application that turns your existing email inbox into a WhatsApp- or Telegram-style instant messenger. Instead of creating a new network or using proprietary servers, it operates entirely over standard email protocols (IMAP and SMTP). How It Works
Email as a Backbone: You log into Delta Chat using your regular email address and password. The app fetches and sends messages directly through your email provider.
Universal Compatibility: You can message anyone who has an email address, even if they don’t use Delta Chat. If they reply using a normal email client (like Gmail or Outlook), their reply appears inside your app as a standard chat bubble.
Clean Interface: By default, the app filters out your normal email clutter (like newsletters or receipts) and only displays actual chat conversations. Key Features
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