business.tutsplus.com › tutorials › how-to-filterHow to Filter & Block Unwanted Emails (Spam) in Gmail Nov 26, 2020 · Method 2. Use Gmail's Unsubscribe Feature. Gmail can detect an unsubscribe button at the bottom of an email. When this occurs, it displays an unsubscribe link at the top of the email next to the sender's email address. Here's how Gmail's unsubscribe feature appears on the email we examined above.