If they got your email due to to database being hacked, then they most likely would mass send their spam to extend their possible reach.
So far I have not received any email spam since the very beginning of me joining here.
What also happens is that spam mail bots simply send out made up emails to people in the hope they guess them right.
For example, they send emails to
fatjoe1@outlook.cok fatjoe2@outlook.com and the list goes on.
All in the hope that one or more of these mails are guessed correctly.
Nah, I run my own email servers - definitely not found by guessing - I'd see the other attempts.
However, it is the same email I've had here for 5 years, but the first time I've had spam sent to it
If you run your own mail servers, could one of them get compromised somehow giving out your email addresses? Also, are you absolutely sure that you didn't share this email somewhere yourself? I've seen a lot of cases when people did something and then honestly claimed that they didn't do that only to get greatly surprised to find out later that it was actually them...