If you start getting an email bombed out of nowhere, being signed up for hundreds of newsletters or other email notifications, take a quick look at your credit card statements for any unknown purchases. Email bombs are often used by card thieves to hide legitimate purchase notifcation email from retailers when they use your stolen creds.
Another reason to actually get your credit card statement via snail-mail.
I understand it is wasteful, but I go on an evening walk and pick up the mail.
The effort for me to pick up the mail and read my credit card statement is actually quite nice.
It doesn't require you to sign in, and search my house for my phone or my YubiKey, it doesn't prompt me for other credit card offers, doesn't require me to download a PDF reader.
Better yet, setup transaction alerts on all your credit cards, and use a budgeting app like Monarch/YNAB to review all your household transactions each month or receive weekly email summaries.
