# Support account-based login and data sync

**URL:** <https://forum.delta.chat/t/support-account-based-login-and-data-sync/5927>\
**Category:** Feature Proposal\
**Created:** [October 17, 2026, 12:14am UTC](https://forum.delta.chat/t/support-account-based-login-and-data-sync/5927 "2026-10-17T00:14:09Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![cxze299](https://forum.delta.chat/user_avatar/forum.delta.chat/cxze299/32/3772_2.png) [@cxze299](https://forum.delta.chat/u/cxze299)\
**Post date:** [October 17, 2026, 12:14am UTC](https://forum.delta.chat/t/support-account-based-login-and-data-sync/5927/1 "2026-10-17T00:14:09Z")

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I would like Delta Chat to support account-based backup, recovery, and message synchronization.

Ideally, I could sign in on a new device with a username and password and restore my existing profile—including my cryptographic identity, contacts, groups, chat history, and attachments—without needing access to an old device or manually transferring a backup.

After signing in, messages and changes such as read status, edits, and deletions should stay synchronized across my devices.

This should preserve end-to-end encryption. Profile data and private keys should be encrypted on the client before being uploaded, so the relay or backup server cannot read them. If secure recovery requires a separate recovery key or passphrase, that would be acceptable.

I run my own Chatmail server and NAS, and I would like the option to store these encrypted backups on infrastructure I control.

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**Author:** ![WofWca](https://forum.delta.chat/user_avatar/forum.delta.chat/wofwca/32/1702_2.png) [@WofWca](https://forum.delta.chat/u/WofWca)\
**Post date:** [October 17, 2026, 7:43am UTC](https://forum.delta.chat/t/support-account-based-login-and-data-sync/5927/2 "2026-10-17T07:43:28Z")

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Welcome!  
See also

- [Keys, Messages on the Server, Backups, Lost Phone [should keep encrypted messages on the server as a backup?]](https://forum.delta.chat/t/keys-messages-on-the-server-backups-lost-phone-should-keep-encrypted-messages-on-the-server-as-a-backup/5541)
- [Backup service concept](https://forum.delta.chat/t/backup-service-concept/5542)