This has been exactly my experience. I have use custom email addresses online for at least 13 year and I have (almost) never gotten spam to these addresses. I h

This has been exactly my experience. I have use custom email addresses online for at least 13 year and I have (almost) never gotten spam to these addresses. I have no spam filter on my account, so if I received spam email I would know. There have been a few random incidents. I did get one spam message to my kickstarter email address, presumably because some project I funded did not protect my address. I also once got spam from a reservation I made for brunch at a local jazz club.