Untangling yourself from Google (or Apple, which is similarly hard), doesn't have to be all at once. Break it up in small steps that feel like individual wins.
One more note about using your own domain: avoid provider-specifict features like subdomain addressing (made it more work for me to move off Fastmail).
Of course, set up gmail to forward messages to your new address and filter them into a folder. Once you have changed all the services you know about, watch for emails coming to the gmail folder, looking for more services that need to be updated. Eventually the only thing arriving in the folder is spam and you can just route it all into the garbage.
It's mostly an ideal. Like OSS. The practical reality means that such extreme adherence to only EU services doesn't do anything but make your life harder. It's like saying you only use open source, from the CPU to the GPU to your OS and everything else... make it all from open source, how big of a nightmare would that be? The only time it is practical is if you're doing really illegal shit and you need the data protection.
No it also encourages the local market and healthy competition. This way in the future we don't fall into the same enshittification trap.
Just on the Gmail front: maybe Trump decides to trade embargo you country and pressures Google to cut off email access. Maybe he decides Google needs to be broken up and sold for parts, and Gmail's data goes to Truth Social. Maybe he thinks illegal immigrants or "radical left wing lunatics" shouldn't have access to American email providers and gets Google to start suspending accounts based on a some criteria. Maybe some of this seems far fetched, but we are talking about a president who threatened to to go to war with one of America's closest allies.
The non-American west's exposure to the instability is too high, and already affecting people. Switching software providers where possible is something that can be done quickly, and relatively easily by individuals in the short term.
Can anyone recommend actually decent and free Android (and also web) mail clients for self-hosted use? Everything I've tried so far (but to be fair, it was a few years ago when I last checked) just felt clunky compared to gmail, so I've ended up sticking with it as a client far longer than I probably should.
In 2019 I decided enough was enough and registered a new domain and started moving my accounts over as new ones came up, or I updated addressing
I have very little left on gmail now other than spam from old services I no longer use. Top one in the inbox at the moment is Facebook telling my I have "530 notifications about X". Its sad how desperate they are.