Over the past 2-3 weeks, I'm seeing so many "marked as spam but isn't really spam" emails that I'm suspecting something has changed with their algo. These are not just random, mom-and-pop emails that I'm talking about - I'm seeing email newsletters from major and minor companies that I've received for 5+ years go to spam. I'm talking about emails from Apple, Amazon, and even eBay being marked as spam. It's too wide to say "Maybe that company changed carriers?" or "Maybe a major email sender has been compromised?" - I bet I've marked more than 100 emails in the past 2-3 weeks as "Not spam". Some of those companies roll their own, some use constant contact, mail chimp, etc. It's gotten to the point where, once my spam folder has more than 10-15 emails in it, I go mark the emails as "Not spam" that are legit (usually at least one) and then empty the spam folder so I can more easily spot the next ones.

Anyone else seeing this behavior?

A few domains that I've seen it from just this past week (from memory):

Apple Amazon eBay Constant Contact The Vitamin Shoppe Clamcase Pool Supply World OfficeMax Active.com Sedo.com