Highlighted Gray

A number of emails in my inbox and sent mailbox are highlighted GRAY, but they are not spam.
What am I doing wrong? Is there a way to prevent as it is annoying?
Thanks

Heve you tried “Train as Good” for those emails

Thanks. It worked>

I don’t think this is related to SpamSieve, since it doesn’t examine sent messages. Do you have “Highlight messages with color when not grouped” checked in Mail’s Viewing preferences?

You can check the SpamSieve log to see whether the inbox messages were gray because SpamSieve thought they were spam. (Perhaps there was an error that prevented Mail from moving them to the Spam mailbox.) If SpamSieve did incorrectly predict the messages to be spam, you should train them as good. Otherwise, you can change their color using the Format > Show Colors command.