For Samsung devices there's Heimdall, an open source tool to flash firmware like Odin does. https://glassechidna.com.au/heimdall/. - Source: Hacker News / over 1 year ago

It's been a few years but I believe what you want is to use Heimdall instead of Odin. Source: over 2 years ago

You see this https://imapsync.lamiral.info/ ? It's only for mails but it's a great solution. Source: 7 months ago

Do your parents have a domain, or are they just using the provider's domain? I've set up my 1522+ to backup our mail accounts using MailPlus on the Synology, and IMAPSYC running on my lab server. But it's backup only, not archiving. That technology could be used to get to your desired state, but there's some work involved to make a secure connection from the internet to your Synology possible, sync/archive... Source: 7 months ago

Check out imapsync (https://imapsync.lamiral.info/) - I am using it since years and migrated tousands of mailboxes without any problems. Source: 12 months ago

I would use https://imapsync.lamiral.info/ for email and sure there is another tool for contacts and calenders. Source: about 1 year ago

There are two solutions for this 1. Using a tool called imap-sync to sync all your emails (it has a great incremental sync). You can run it periodically via cron 2. Using the same or similar tool and export to a database. Source: about 1 year ago