I open a support ticket describing the situation, expecting that it is a simple oversight, but I receive a puzzling response. Their support person claims that this IP doesn't belong to them, and that it is owned by "Sand Dune Mail Ltd". I check the smtp2go.com privacy page, and it clearly lists the name of the company as "Sand Dune Mail Ltd". Source: about 1 year ago

Hmm. Getting the IP address of a linode site instead of smtp2go.com would worry me. Source: about 1 year ago

Our mail relay service smtp2go.com is what is causing the issue! Source: about 2 years ago

Https://smtp2go.com maybe? Just discovered them the other day but yet to give it a whirl. Just when I was starting to double down on Postmark, they did this. Not blaming them, but we all know this is going to go badly (as a previous Active Campaign user). - Source: Hacker News / about 2 years ago

Why would it? My response will be sent through the SMTP server at smtp2go.com which has no idea what my Gmail address is. How does my "response to meeting invite" differ from my responses to other mass emails? Source: about 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