If messages from a sender outside your domain are being incorrectly tagged as spam, you can prevent this from happening by creating an email filter using the Never send it to Spam option: In Gmail, click Settings > Filters > Create a new filter. Enter the person's address in the From field, and then click Next Step. Select Never send it […]
FAQ Category: Gmail-spam
How long do messages remain in my Spam folder?
Messages remain in the Spam folder for 30 days. After that, Gmail permanently deletes them.