Filters in Gmail act as gatekeepers, directing the flow of your inbox traffic into specific places or applying certain labels so that you can always have a tidy inbox without having to manually add labels to common or recurring messages. You can manage your incoming mail using Gmail's filters to send email to a label, or archive, delete, star, or automatically forward your mail.
Filters work in a two part process: First you tell Gmail what search criteria you'd like to give the filter, then you tell it what to do with all the email that fit that criteria.
Creating a Filter Based on a Particular Message
- From your message list, select the checkbox next to the email you want.
- Click More (3 dots button).
- Click "Filter messages like these".
- Select the Create filter button.
- Enter your filter criteria - in other words, tell it what you'd like it to do. Then click the Create filter button one last time.