Also, do you use disposable emails? What for?
I have a lot of emails made with simple login and I use the same one only for three websites. Then I get all emails forwarded to the same email, and an email for personal use (family, work, friends…) also forwarded to that one. So something like this:
o o o o personal
\ | / /
| /
| /
o
I use fastmail with several different domains associated.
I have a custom domain just for signing up to online services. For me, this domain is completely separate and I never use it for anything else. Like nachtigall, I use a naming scheme and a catch-all address. My naming scheme uses their domain plus a random bit like so,
twitter.6cruzbms@mydomain.tld
.There are two main benefits to using such a scheme imo. First, it’s harder for data aggregators to collate and cross reference me across the web by using an email address. Second, it acts as a hacked canary and it’s easy to identify the source of suspicious or problematic emails.