Go to the spam folder and open the email you’d like to prevent from being sent to spam in the future.
Towards the top of the page, click on the “More” button, and then select “Filter Messages Like These” from the drop-down menu.
Fill out the criteria on the filter requirements. Gmail will typically pull in the email sender. You can enter other criteria, such as a subject line, or text that the email will contain. But it’s important to make sure that all future emails will meet this criteria, so you’ll want to be more general than specific here. When you’re done, click or tap on “Create Filter with This Search.”
Check the checkbox for “Never Send it to Spam”. Additionally, you can choose to check the checkbox for “Also Apply to ## Matching Conversations”. This will remove any messages that meet the criteria you set up on step 3 from the Spam folder (If there are any).
