Good mails go into Spam

Most of my " good " mails go into the Spam Box.
I right click, and say to take them off “Blacklist” but next day, they are back again.
I have missed a few important messages, because I haven’t noticed them in the Spam.
I have read other messages on this subject, and there is nothing wrong in my e mail server. All the mails are correctly in my in box.
Can someone help me please ?

Where do I right click anyway? I never found out how to take someone off the blacklist.
On the other hand, if taking off the blacklist doesn’t work anyway … :wink:

Check you email vendor , maybe it is coding it spam before emclient even gets to it.