How to Block Emails on Gmail (Web, iPhone, Android)

To block emails on Gmail, open a message from the sender, click the three-dot "More" menu at the top right of the message, and choose Block "[sender]". The steps are identical in the Gmail app on iPhone and Android. Here is the catch most guides bury: blocking does not stop the sender. Gmail keeps accepting their mail and silently routes it to Spam, where it still arrives, sits for 30 days, and still counts against your storage.

Verification note: This is a documentary guide checked against current sources on August 3, 2026. We did not hands-on test the named product or workflow during this review, so claims are limited to the cited documentation. Interfaces can vary by account, region, rollout, and app version.

Blocking a sender in Gmail is a routing rule, not a wall: Gmail still accepts the sender's mail — it just lands in Spam instead of your inbox.

That distinction decides which button you should actually press. This guide covers the documented block steps on all three surfaces, what happens behind the scenes, how to unblock, and a three-button decision table — block, report spam, or unsubscribe. Only unsubscribe asks the sender to stop; whether it succeeds depends on the sender honoring the request.

How do you block an email address in Gmail on the web?

On a computer, per Google's official instructions:

1. Go to gmail.com and open a message from the sender you want to block.
2. At the top right of the message — next to the Reply arrow — click More (the three vertical dots).
3. Click Block "[sender name]".
4. Confirm in the dialog that appears.

That is the whole procedure. Google's own wording on what happens next is short: "After you block a sender, all future emails from them go to Spam." Messages already in your inbox stay exactly where they are.

You can review everyone you have ever blocked in one place: Settings → See all settings → Filters and Blocked Addresses. The blocked list lives at the bottom of that page, with a checkbox next to each address.

How do you block emails in the Gmail app on iPhone or Android?

The mobile steps mirror the web, and they are the same on iPhone and iPad as on Android:

1. Open the Gmail app and open a message from the sender.
2. Tap More — the three dots at the top right of the message itself, next to Reply. (Not the three dots in the app's top bar; that is a different menu.)
3. Tap Block "[sender name]".

To unblock on mobile, repeat the same steps — the menu item flips to Unblock "[sender name]" for anyone you have already blocked. There is no separate blocked-senders screen in the mobile apps; the full list only appears in web settings.

What actually happens when you block someone on Gmail?

Less than the word "block" implies. Here is expectation versus reality:

What you might expect	What Gmail actually does
The sender is stopped	No. Gmail keeps accepting their mail and routes it to Spam
The sender is notified	Google's block help does not document a notification, bounce, or tracking effect; do not infer transport behavior from the control
Old emails disappear	No. Existing messages stay wherever they were
The mail is gone	Not immediately. It sits in Spam and is auto-deleted after 30 days
Your storage is freed	No. Spam and Trash count toward your Google Account storage until deleted

Two of these deserve a closer look.

First, storage. Google's storage documentation is explicit that your quota — 15 GB free, shared across Gmail, Drive, and Photos — includes "Gmail messages and attachments, which includes your Spam and Trash folders." A blocked newsletter that keeps sending image-heavy emails is still eating your quota; you have hidden it, not stopped it.

Second, sender visibility. Google's cited block documentation establishes that future messages go to Spam; it does not establish whether a separate transport response, tracking event, or sender-side signal exists. Blocking is therefore a mailbox-routing action, not a request that the sender suppress your address.

Does blocking emails on Gmail work?

Blocking works for exactly one scenario: a specific, persistent address you never want to see again. For everything else, it underdelivers.

Where it works. An ex-colleague, a pushy salesperson, one aggressive recruiter — anyone who emails from the same address every time. Block them once and their mail reliably disappears into Spam.

Where it fails. Gmail's block matches the exact address, not the person or the operation behind it. Actual spammers rotate sending addresses, so each block may be obsolete by the next campaign. Gmail's automated defenses already block more than 99.9% of spam, phishing attempts, and malware, while blocking is most useful for a persistent address that still reaches you. For newsletters and promotional mail, blocking treats the symptom: the sender keeps mailing you, your Spam folder keeps filling, and your storage keeps draining.

So "does blocking emails on Gmail work?" — as a hide button, yes. As a stop button, no. For that, you need the right tool for the sender type.

Should you block, report spam, or unsubscribe?

Gmail gives you three buttons for unwanted mail, and they do three different jobs. Most people press the wrong one. Here is the decision table:

The sender is...	Press	What it actually does
A stranger you never opted into, mailing from one persistent address	Block	Routes their future mail to Spam. The sending continues; you stop seeing it
Deceptive, scammy, or rotating through addresses	Report spam	Trains Gmail's filter — Google receives a copy of the message and uses it to catch similar mail, for you and everyone else
A legitimate business you once signed up for	Unsubscribe	The only option of the three that asks the sender to stop; mail stops if the request is honored

Block is a personal routing rule. It affects only your mailbox and only that exact address.

Report spam is a signal, not a rule. Google's documentation notes that when you report spam, a copy of the message goes to Google for analysis, and Gmail gets better at catching similar mail. Against rotating-address spammers, this beats blocking, because the filter learns patterns rather than memorizing one address. For genuinely malicious mail, this is also the responsible choice — your report protects other inboxes too.

Unsubscribe is the only button here that sends a request to the list operator. Gmail can surface a control from the traditional List-Unsubscribe routes defined by RFC 2369; it is RFC 8058 one-click only when List-Unsubscribe-Post, an HTTPS URI, and qualifying DKIM coverage are present (RFC 8058). Google requires senders exceeding 5,000 messages a day to personal Gmail accounts to support one-click for covered marketing and subscribed mail, keep spam-report rates under 0.3%, and process subscription opt-outs within 48 hours. Gmail's docs note it can still take a few days for mail to stop and also document a Manage subscriptions view.

One important boundary: only unsubscribe from senders that look legitimate. For anything deceptive, report spam instead — we cover the reasoning, and the rare cases where unsubscribing can backfire, in does unsubscribing from emails work.

How do you unblock emails in Gmail?

Unblocking is symmetric with blocking, plus one bulk option on the web:

From any message (web and mobile): open a message from the blocked sender — check Spam, since that is where their mail now lives — tap More at the top right of the message, then Unblock "[sender name]".

From settings (web only): Settings → See all settings → Filters and Blocked Addresses → check the box next to each address → Unblock selected addresses. This is the fastest way to clean up several blocks at once, and the only place you can see the full list.

After unblocking, future mail returns to your inbox. Messages that already landed in Spam stay there — move them out manually if you want them, before the 30-day auto-delete removes them.

What if you want the emails to stop, not just hide?

For a recognized, domain-verified mailing list, use a native unsubscribe route and preserve the confirmation; for suspicious mail, report it. Blocking remains useful when the job is routing future mail from one address away from the inbox. Our master decision guide is how to stop spam emails.

We should disclose an interest here: we build Flick (flicked.email). Archive and triage use card gestures; on supported cards, Unsubscribe is a separate control with confirmation. Flick parses the advertised RFC 2369 route and can use the RFC 8058 POST signal when present, but it does not independently verify DKIM coverage or sender honor. We unpack that distinction in one-click unsubscribe explained.

And because an unsubscribe request is only as good as the sender's willingness to honor it, we are building the Exit Gap Index. Its live state matters: as of August 3, 2026, the page contains a 150-sender work-list, four machine-capability observations, and zero published honor grades. Those four observations show only that a message exposed an unsubscribe route; they do not show that the sender stopped. A grade requires at least three probes spread across at least 48 hours with evidence retained, and the dedicated burner-mailbox observation cycle has not run. Untested therefore means unknown, not failing or passing.

FAQ

Will the sender know I blocked them on Gmail?

Google's block documentation describes future messages going to Spam and does not describe a block notification to the sender. Do not infer more than that: transport, bounce, and tracking behavior can vary independently of Gmail's block control.

Does blocking someone on Gmail delete their emails?

No — blocking only redirects future messages to Spam and leaves existing ones untouched. Mail from blocked senders sits in Spam until Gmail's automatic cleanup deletes it after 30 days. Until then, it still counts toward your storage quota along with everything else in Spam and Trash.

Can you block an entire domain in Gmail?

Not with the Block button, which matches one exact address — but a filter can do it. In Gmail on the web, go to Settings → See all settings → Filters and Blocked Addresses → Create a new filter, put @example.com in the From field, and choose Delete it (or Skip the Inbox) as the action. That catches every address at the domain, which the per-address block cannot.

Why do blocked emails still show up in my Spam folder?

Because Gmail documents its block as routing future messages to Spam, not as a sender-side unsubscribe. Gmail does not state the product rationale on that page. Spam is automatically deleted after 30 days.

Is it better to block or unsubscribe from newsletters?

For a legitimate newsletter, unsubscribe — it is the only action that asks the sender to stop mailing you at the source. Blocking just reroutes each new issue to Spam, where it keeps consuming storage until auto-deletion. Reserve the block for senders you never opted into or those your own dated evidence shows ignored a request. The Exit Gap page does not currently identify which senders are which because no sender has a published honor grade yet.