This is what I do as well. I purchased my own custom domain name and run aliases off it using Addy. So as an example, an email for an online account would look like: random9.words@mycustomemail.com

Then I feed these accounts into a password manager so I don’t have to remember them.

All the aliases forward mail directly to my main inbox. Companies never see what my real address is. If I get spam, I know which company either sold my data or leaked my data. I can then take action by simply turning off that email alias and then spinning up a new one.

The best thing about owning your custom domain is that you’re in control and never have to change your email addresses. If I want to move to a new email provider, I can easily do that. The process, simplified:

• Buy a domain name
• Sign up for an email account at Tuta, Mailbox, etc.
• Set up your custom domain at that provider.
• Go to your Domain provider and update your MX records so that it syncs with the email provider.
• if you want to switch email providers, get a new one and then update your MX records to point to the new provider.
• If you updated your records to point to the new provider, you’re done. It’s that simple. You won’t miss an email.

Edit: All providers make it very simple to set up a custom domain. If you can follow instructions and copy and paste text, their systems will run checks to make sure you did it correctly and it’s syncing properly. Very easy for those who aren’t technical.