When to Block vs. Filter vs. Unsubscribe

Before blocking a sender, identify the right action for the situation.

Block when you never want to receive emails from a specific sender again. Blocked messages go directly to Spam. This is best for persistent unwanted contacts, scammers, or harassers.

Filter when you want to automatically sort, archive, or delete emails matching certain criteria. Filters are more precise than blocking. You can filter by sender, subject line, keywords, or attachment type. Use filters for newsletters you want to keep but not see in your primary inbox, or for automated notifications from services.

Unsubscribe when you signed up for a mailing list and no longer want it. Legitimate companies are required to include an unsubscribe link in marketing emails. This is cleaner than blocking because it stops emails at the source.

Blocking is permanent until you reverse it. Filters can be edited or deleted at any time. Unsubscribing works with legitimate senders but will not stop malicious emails.

Step-by-Step: How to Block a Sender in Gmail (Desktop)

Step 1 — Open an Email from the Sender

Find an email from the person or address you want to block. Open the email so you can see the full message.

Step 2 — Click the Three-Dot Menu

In the top-right corner of the email, next to the reply arrow, click the three vertical dots (the "More" menu).

Step 3 — Select "Block [Sender Name]"

In the dropdown menu, click "Block [Sender Name]." Gmail will display a confirmation dialog explaining that future messages from this sender will go to your Spam folder.

Step 4 — Confirm the Block

Click "Block" in the confirmation dialog. All future emails from this address will bypass your inbox and go directly to Spam. Existing emails from this sender remain in your inbox; they are not retroactively moved.

How to Block Emails in Gmail on iPhone and Android

On iPhone (Gmail App)

Open the Gmail app and find an email from the sender you want to block. Open the email. Tap the three-dot menu icon in the top-right corner of the message. Tap "Block [Sender Name]." Confirm when prompted.

On Android (Gmail App)

The process is identical to iPhone. Open the email, tap the three-dot menu, and select "Block [Sender Name]."

Both mobile platforms sync with your desktop settings. Blocking a sender on your phone also blocks them on desktop, and vice versa. Mastering Gmail keyboard shortcuts on desktop can help you process and triage emails faster, reducing the time spent managing unwanted messages.

How to Create a Filter to Automatically Delete Emails

Blocking sends emails to Spam, where they remain for 30 days before automatic deletion. If you want messages deleted immediately, or if you need more granular control, create a filter.

Step 1 — Open Gmail Settings

Click the gear icon in the top-right corner of Gmail and select "See all settings." Navigate to the "Filters and Blocked Addresses" tab.

Step 2 — Create a New Filter

Click "Create a new filter." In the filter criteria form, enter the sender's email address in the "From" field. You can also filter by subject, keywords, size, or whether the email has attachments.

Step 3 — Choose Filter Actions

Click "Create filter." Select the actions you want Gmail to take. Options include "Skip the Inbox (Archive it)," "Delete it," "Mark as read," "Apply the label," or "Never send it to Spam." For permanent deletion, select "Delete it."

Step 4 — Apply to Existing Emails (Optional)

Check "Also apply filter to matching conversations" if you want the filter to retroactively process emails already in your inbox. Click "Create filter" to save.

Filters are powerful because they work in the background. You can combine multiple criteria to target very specific email patterns without blocking entire domains.

How to Unblock a Sender in Gmail

If you blocked someone by mistake, or if circumstances change, you can reverse the block.

Open Gmail Settings by clicking the gear icon. Select "See all settings." Go to the "Filters and Blocked Addresses" tab. Scroll down to the "Blocked Addresses" section at the bottom. Find the address you want to unblock and click "Unblock" next to it.

Alternatively, if you receive a message from the blocked sender in your Spam folder, open it and click the "Unblock sender" button that appears at the top of the message.

After unblocking, future emails from that sender will arrive in your inbox normally.

How to Report Phishing and Spam

Blocking stops emails from a specific address, but spammers often change addresses. Reporting helps Gmail improve its spam detection for everyone.

To report an email as spam, open the message and click the "Report spam" button (the exclamation mark icon) in the toolbar. The email moves to Spam and Gmail learns from the report.

To report phishing, click the three-dot menu in the email and select "Report phishing." This flags the email for Google's security team and helps protect other users from the same sender.

For persistent spam from multiple addresses, combine reporting with filters. Create a filter that catches emails with specific keywords or patterns common to the spam you receive, and set the filter to automatically delete them. Understanding what qualifies as an email blast versus spam can help you distinguish between legitimate bulk emails and actual threats.

Tips for Keeping Your Gmail Inbox Clean

Use the "Unsubscribe" button. Gmail surfaces an unsubscribe option at the top of many marketing emails. One click removes you from the mailing list without needing to visit the sender's website.

Review your filters periodically. Filters you created months ago may no longer be relevant. Old filters can accidentally hide important emails. Audit them quarterly.

Avoid publishing your email address publicly. Spam increases significantly when your address appears on websites, forums, or social media profiles. Use a secondary address for sign-ups and public forms. Choosing the right free email provider for your secondary address keeps your primary inbox clean.

Be cautious with "unsubscribe" links in suspicious emails. Phishing emails sometimes disguise malicious links as unsubscribe buttons. If the email looks suspicious, report it as phishing instead of clicking any links inside it.

FAQ

Does blocking someone in Gmail notify them?

No. The blocked sender receives no notification. Their emails are silently redirected to your Spam folder. From their perspective, the email appears to have been sent normally.

What happens to existing emails from a blocked sender?

Existing emails remain in your inbox. Blocking only affects future messages. To remove existing emails, delete them manually or create a filter with "Also apply filter to matching conversations" enabled.

Can I block an entire domain in Gmail?

Not through the standard block feature, which works per email address. To block an entire domain, create a filter with the domain in the "From" field (e.g., "@spamdomain.com") and set the action to "Delete it."

How many senders can I block in Gmail?

Gmail does not publish an official limit on blocked senders. In practice, you can block hundreds of addresses without issues. If you need to block a very large number, consider using domain-level filters instead.

Does blocking work across all devices?

Yes. Blocking a sender on Gmail desktop, the Gmail app, or any connected client applies universally to your Gmail account. The block syncs across all devices where you access your inbox.