Why have important emails started going to Junk folder?

Same problem. singing the not junk does not change the new mail coming in the next day.

Have junk mail turned off and still important mail from my bank goes to junk mail. Some does some does not but usually it is the same security mail from one bank and eBay and sears, macy's .

Can not figure it out like I said no junk mail filtering no rules.

I'm not 100% sure what is going on there but here are some ideas that may help:

Check your Junk Mail preferences tab inside Mail. In my copy, all three of the "The following types of messages are exempt from junk mail filtering:" are checked. Presumably your wife's email is in your Contacts list? If that's the case, she should be exempt and never placed in the Junk mailbox.

In my Junk mailbox, bold just means I haven't read the message (I think).

Have you tried clicking on each incorrectly junked message and pressing the "Not Junk" button?

There are plenty of guides giving more information about junk mail filtering on the web, Apple has a brief set of suggestions here:

http://support.apple.com/kb/PH11779?viewlocale=en_US&locale=en_US

There's also a good guide at the following URL:

http://www.maclife.com/article/columns/maclife_101_how_filter_spam_apple_mail

Hope that helps.

Ivan

I moved the non-junk emails from my Junk folder to my Inbox and now the new emails to those addresses are coming into my Inbox again.

Sorry to say I have the same issue with known contact's emails going straight to 'junk', having updated to 10.11.6 yesterday. I've never seen this issue before and as emails were doing the right thing yesterday and have not done that since updating, it seems to me that this maybe a glitch in the update

This is nothing to do with Mail (the brown ones are) but as these are black it is an isp or email provider marking them as junk, Mail is honoring that marking by moving them to junk.

So go to Mail preferences>Junk Mail and uncheck "Trust junk mail headers in messages" and "Filter junk mail before applying my rules"

See my reply earlier in this thread.

Thanks Csound1. It's my mac.com email and that account doesn't have any filtering, even the email alerting me to your response was given a brown bin and sent to junk mail. Neither of the boxes you refer to were checked.

Take it to Apple.