DeltaTouch is a community-created messenger based on deltachat-core. In other words, it's inofficial, but compatible with the official Delta Chat clients. It works with your existing email account, but has the look and feel of a messenger. For more infos about email-backed messaging, please visit https://delta.chat. Incomplete list of current features:

Set up accounts by

logging in with username/password set up second device via QR code import backup scan QR invitation code

Multi-account support Create and manage groups and verified groups Pin, archive, mute chats Search in chats Rudimentary image viewer Rudimentary audio/voice message player Record voice messages, play and confirm before sending Export backup Most settings like in the official clients (show classic emails, auto-download size etc)

For system notifications, background suspension has to be disabled and the app has to be running in the background.