Delta Chat is a free open-source Telegram or Whatsapp like messenger that works on Linux, Mac, Windows, iOS, and Android.
Delta Chat doesn’t have its own servers but uses the most massive and diverse open messaging system ever: the existing e-mail server network.
Chat with anyone if you know their e-mail address, no need for them to install the software! All you need is a standard e-mail account.
Download Delta Chat:
The software offers deb, appimage, and flatpak packages for downloading on its website:
Delta Chat Download
Install the messenger, login via your Email address and enjoy!
For Gmail, you’ll need to turn on “Less secure app access” in account settings > security web page.