# Backup service concept **URL:** \ **Category:** Chatmail Relays\ **Created:** [July 15, 2026, 2:30pm UTC](https://support.delta.chat/t/backup-service-concept/5542 "2026-07-15T14:30:04Z")\ **Posts on this page:** 1\ **Showing post:** 2
**Author:** ![ian](https://support.delta.chat/user_avatar/support.delta.chat/ian/32/3164_2.png) [@ian](https://support.delta.chat/u/ian)\ **Post date:** [July 16, 2026, 10:01am UTC](https://support.delta.chat/t/backup-service-concept/5542/2 "2026-07-16T10:01:51Z")
I think users are already too reliant on servers, and the last thing we would need is yet another commercial server hoarding a lifetime of data & metadata. I would enjoy seeing the mentioned reciprocal scheme for peer to peer message backup based on [secret sharing](https://en.wikipedia.org/wiki/Secret_sharing). However, note that even if such a system were to be implemented, instead of Delta Chat implementing it separately, it would be desirable for all apps on your device to use it, but then it would need to be running a daemon for each and keep syncing with subsets of peers for each. This would be quite inefficient. Here are answers to some of your questions: > [@What data is included/excluded from iOS device backups?](https://support.delta.chat/t/what-data-is-included-excluded-from-ios-device-backups/4126/1): > > Hi there, I’d like to know whether chats and the private/public key are included or excluded from iOS device backups, to either: Local device backups to macOS (via Finder) ICloud backups In other words, would a restore to a new iPhone from either of these 2 backup locations, restore everything ? Thank you! > [@Delta chat id backup? \[small archive without past messages\]](https://support.delta.chat/t/delta-chat-id-backup-small-archive-without-past-messages/5203/3): > > You can use the export backup feature already implemented. If you find the file too large to handle, you need to prune the zip manually. You can remove past messages, xdc state updates, attachments, but not your avatar and then vacuum the database file with a few SQL commands. --- _[View the full topic](https://support.delta.chat/t/backup-service-concept/5542)._