You see this https://imapsync.lamiral.info/ ? It's only for mails but it's a great solution. Source: 6 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: 6 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

Datafinder - Least expensive, pretty good results. With bulk requests I think an email is around $0.075 a hit. I use them daily and I like them. Only one I've found that had my personal email address. Source: about 2 years ago

Good question. I have yet to find a consistently good source for email addresses that are public. I use datafinder to get email addresses once I have the individuals name and state but you do have to pay per email found. While the email quality is better than any other I have found, it's still just going to be okay. Source: over 2 years ago

Alternatively, you can research the address using websites and data sites like “datafinder” and others - try https://datafinder.com/. Source: about 3 years ago