How to Block a Sender in Gmail - And What Blocking Actually Does

Blocking is the bluntest instrument in your inbox, and it is the right one in a narrow set of cases: a mailer who ignores opt-outs, mail you never signed up for, or someone you simply do not want to hear from. Here is how to block a sender in Gmail on every platform, what it does behind the scenes, and when a filter or an unsubscribe is the better choice.

Can you block emails on Gmail? Yes, with two limits: it works one exact address at a time, and blocked mail is rerouted to Spam rather than refused.

How to block a sender in Gmail on desktop

1. Open any message from that person or company.
2. Click the three-dot menu at the top right of the message (not the one in the main toolbar).
3. Choose Block “[name]”.
4. Confirm in the dialog.

That is the whole Gmail block sender flow. Behind the scenes the address joins a blocked list that routes it to Spam, which is why blocked mail appears in the Spam folder rather than vanishing.

How to block emails on Gmail on iPhone and Android

1. Open a message from that address in the app.
2. Tap the three-dot menu next to the name at the top of the message.
3. Tap Block “[name]”.

That is how to block a sender on Gmail from a phone, and the change syncs to every device on the account, so doing it once covers your laptop too.

What blocking does - and does not do

Worth being precise, because the expectations rarely match the behavior:

Blocking does	Blocking does not
Send future mail from that address to Spam	Stop them from sending
Apply across all your devices	Notify anyone
Auto-delete that mail after 30 days in Spam	Delete messages you already have
Work on the exact address	Cover other addresses at the same domain
Help train the spam filter	Remove you from the mailing list

That last row matters most. Blocking is not an opt-out: the company’s system still counts you as a subscriber, still sends, and still logs your address as active. If the business is legitimate, unsubscribing is the cleaner fix.

How to check blocked senders in Gmail

1. Settings (gear icon) → See all settings.
2. Open the Filters and Blocked Addresses tab.
3. Scroll to the blocked list. Each entry has an unblock link.

Your blocked senders list is worth reviewing once or twice a year - an address gets blocked in frustration and forgotten, then people wonder why a supplier’s mail never arrives.

When to use a filter instead

Blocking handles one address. A filter handles a pattern, which is what you need when a mailer rotates addresses like news1@, news2@, offers@ on the same domain. Here is the setup:

1. Click the sliders icon in the search bar.
2. In From, enter *@theirdomain.com.
3. Create filter → tick Delete it (or Skip the Inbox) → tick Also apply filter to matching conversations.

With Delete it ticked, this is also how to block emails in Gmail permanently: matching mail skips both the inbox and Spam and goes straight to Trash, where it is removed after 30 days.

Filters are also the answer for mail you must receive but never want to see - system notifications, ticketing systems, automated reports. Label it, skip the inbox, done. Our search operators guide covers how to filter emails in Gmail by address, subject, size or age.

When to unsubscribe instead

Blocking a legitimate newsletter is a workaround, not a solution: their mail still hits Google’s servers, still counts toward your storage while it sits in Spam, and still reappears if you ever change accounts. Opting out removes you from the list itself, which makes it the better route for promotional emails from brands you once bought from.

To unsubscribe from emails sent by more than a handful of companies, do it in bulk. Mass Unsubscribe Gmail shows everyone mailing you with a message count, then unsubscribes from or deletes mail for every name you tick in a single pass - including a move-to-spam fallback for lists whose opt-out does not work.

How to delete all emails from one sender on Gmail

Blocking is forward-looking. Their old messages remain, and they still use your storage quota:

1. Search from:name@example.com.
2. Tick the checkbox above the list.
3. Click Select all conversations that match this search.
4. Delete, then empty the Trash to free the space.

The full mechanics, including the searches that clear the most at once, are in our bulk delete guide.

Blocking vs. the spam filter

Most spam emails never reach your inbox because the Gmail spam filter catches them first. When one slips through, reporting it as spam trains the filter; blocking is for a persistent address that keeps getting past it. For the wider picture - how to block spam emails on Gmail, report phishing, and cut junk off at the source - see our guide on how to stop spam emails.

Decision shortcut

Still unsure how to block unwanted emails in Gmail, or whether to do it at all? Match the situation:

• Legitimate company, unwanted mail → unsubscribe.
• Legitimate company, mail you must keep but not see → filter with a label.
• Ignores opt-outs, single address → block.
• Ignores opt-outs, rotating addresses → domain filter.
• Phishing or scams → report as phishing, then block.

Used in that order, blocking becomes what it should be: the last step for the few senders that nothing else stops, not the default reaction to a full inbox.