To block spam emails on Android, open the message in the Gmail app, tap the three-dot menu at the top right of the message, and tap Block. Everything from that sender goes to Spam from then on. What there isn't is a phone-wide setting: the block applies only inside the app you set it in.
That catches people out, because Android does have a blocking screen and it looks like the right one. Settings > Blocked numbers exists on every Android phone, and Google Messages has its own Block numbers and spam menu. Neither touches email. Android's blocking system stores phone numbers and filters calls, SMS and MMS, which is exactly what it says in the Android Open Source Project docs. Type an email address into it and there's nowhere for it to go.
So blocking on Android is per app, and most Galaxy phones ship with two mail apps installed. That's two block lists to keep, and a sender you blocked in one keeps arriving in the other. Which is a lot of maintenance for a problem you can mostly avoid: SecondInbox gives you a free temporary inbox in one click, no registration, permanently deleted when it expires. Use it for the free trial, the store discount code, the app you'll open twice, the PDF that wants an email first. A sender who never gets your real address is a sender you never have to block twice.
Below: the exact taps in Gmail, Samsung Email and Outlook, the Samsung account change from March 2026 that broke a lot of inboxes, and why the spam text from a Gmail address is a different fix entirely.
Android has no email block list, and that changes the strategy
On an iPhone, Mail keeps a block list in system settings that syncs across your Apple devices. Android has no equivalent. There is no OS-level list, no central screen, nothing under Settings that will ever ask you for an email address.
Every block you set on Android lives in one of two places:
- In your mail provider's account, if you block from the Gmail, Outlook or Yahoo app. This one follows the mailbox everywhere: phone, laptop, browser, any other client.
- On the device only, if you block in Samsung Email. This one applies to that app on that handset and nowhere else.
The difference matters the moment you check mail on more than one thing. Block a sender in Gmail on your phone and it's blocked when you open Gmail on a laptop, because the rule is stored on Google's side. Block that same sender in Samsung Email and your laptop knows nothing about it.
Practical version: block on the provider's side whenever you have the choice. It's the only kind of block that travels.
How to block spam emails on Android in the Gmail app
Gmail is the default mail app on effectively every Android phone, so this is the flow most people need.
- Open the message from the sender you want gone.
- Tap the three-dot menu at the top right of the message header, not the one in the top toolbar.
- Tap Block "sender".
- Confirm.
Google documents it in Block an email address in Gmail. Blocked mail lands in Spam rather than being deleted, and Gmail clears the Spam folder every 30 days.
Two limits worth knowing on Android specifically.
You can't manage the list from the phone. The app will happily add addresses, but reviewing or cleaning your blocked list is web only, at Settings > See all settings > Filters and Blocked Addresses. If you've been blocking on mobile for years, you have a list you've never seen.
Blocking one address rarely ends it. Bulk senders rotate addresses at no cost, so you end up adding entries faster than they retire them. We went through the full set of Gmail-side options, including the domain-wide filter Google doesn't give you a button for, in how to block spam emails on Gmail.
For mail you actually did sign up for, skip Block entirely. Gmail's Manage subscriptions view sits below Trash in the app's navigation menu and lists your regular senders by volume with an unsubscribe button on each. Only use it on mail you genuinely opted into. Clicking unsubscribe on real spam confirms your address is live and read by a human, which is the most valuable thing you can hand a spam operation, for the reasons in why you shouldn't unsubscribe from newsletters you never signed up for.
Samsung Email keeps a separate block list, and it just lost Outlook accounts
Samsung Email comes preinstalled on most Galaxy phones, which means a lot of Android users have been blocking senders in an app that Gmail knows nothing about.
To block there: open the message, tap the menu, and choose Block address. The blocked list is under the app's settings, per account.
Two things to check before you rely on it.
It's device-local. Nothing you block in Samsung Email applies to the same mailbox in Gmail, in a browser, or on another phone. If you read mail in both apps, and plenty of Galaxy owners do without realising it, you're maintaining the block twice.
Microsoft accounts stopped working in it in March 2026. Microsoft cut off Exchange ActiveSync versions below 16.1 on 1 March 2026, and Samsung Email fell on the wrong side of that line. Standard Outlook and Hotmail accounts could no longer be added from around 12 March 2026. If your Samsung Email stopped syncing this year and you assumed the app broke, that's the cause. The fix is the Outlook app, or updating to Samsung Email 6.2.10.8 or later on Android 10+.
Which brings up the other two apps. Outlook on Android blocks via the message menu: Report junk, then Block Sender. The rule lives in your Microsoft account, so it travels. Note the ceiling: Outlook caps blocked senders at 1,024, and once the list is full new entries fail without telling you. Yahoo Mail handles blocking through account settings rather than the message view, and its cap is lower still. Past a handful of senders, build a filter instead of a block list.
Report spam does more damage than Block does
Block costs the sender nothing. No bounce, no error, no signal that anything changed. Their system logs a successful delivery and keeps going.
Report spam is a different weapon, and on Android it's the faster gesture anyway: long-press the message in the inbox list, tap the menu, tap Report spam. No need to open anything.
That report feeds Google's classifier for every Gmail user, not just you. Google requires anyone sending more than 5,000 messages a day to Gmail addresses to keep their spam complaint rate under 0.10%. Enough reports and the sender gets throttled across the platform. Blocking moves one message for one person. Reporting is the only action here that costs the spammer something.
Rough division of labour on an Android phone:
- Report spam for anything unsolicited and bulk.
- Block for one persistent nuisance that keeps mailing from a single fixed address.
- Unsubscribe only for senders you remember signing up with.
Spam texts from an email address are a different Android problem
A good share of "spam email on Android" searches are actually about texts. Scammers send SMS through email-to-text gateways, so the message shows up in Google Messages with an email address in the sender field instead of a number. Blocking it in Gmail does nothing, because it never went near your mailbox.
Turn on the filter first: open Google Messages, tap your profile picture, open Messages settings, then Spam protection, and switch on Enable spam protection. It's off for some users and it's the single highest-value toggle on the phone for this.
For anything that slips past, open the conversation, tap the three-dot menu, and block or report from there. Each report trains the filter.
One wrinkle in 2026: Samsung is retiring Samsung Messages as of July 2026 and moving Galaxy users to Google Messages. If your spam settings look unfamiliar after an update, you're probably in a different app than you were last year.
The fix no block button can do: stop giving out your real address
Blocking, reporting and unsubscribing all react to an address that's already circulating. None of them pull it back off a list. If your address turned up in a breach or a company you signed up with sold its list, it's being resold right now, and no amount of tapping Block touches that. (If the volume jumped recently and you want to know why, we broke down the causes in why am I getting so much spam all of a sudden.)
The habit that compounds is boring: keep your real address for the short list of accounts you'd hate to lose, and use a disposable one for everything else.
A disposable inbox is a real inbox with an expiry date. You get an address instantly, receive the confirmation mail, tap the verification link, and walk away. When it expires, the contents are deleted from the server. If that address surfaces on a resold list in 2029, there's nothing at the other end to block.
The honest limits, because this isn't magic:
- Some sites reject known disposable domains at signup. Banks and the big platforms usually do. If you need the account long term, use your real address.
- The inbox has to outlive the verification email. Ten-minute services get tight when a confirmation takes twelve, which is why one click extends a SecondInbox inbox instead of making you start over.
- Never use a disposable address for anything you'll need to recover. No password reset survives an expired inbox.
That's the case for SecondInbox. One tap in Chrome, an inbox, no account, no personal details, everything deleted from our servers when it expires. Register free if you'd rather keep several addresses across sessions. If most of your spam traces back to free trials and one-off signups, changing that one habit does more over six months than every block list on the phone. For desktop clients and provider-level filtering, we covered the general case in how to block spam emails.
There isn't one at the phone level. Settings > Blocked numbers holds phone numbers only and filters calls and texts. Your email blocks live inside each mail app: Gmail's list is web-only at Settings > Filters and Blocked Addresses, Samsung Email's is in that app's per-account settings, and Outlook's lives in your Microsoft account.
No. Their mail still reaches your provider normally. In Gmail the block just routes it to Spam, where it sits for 30 days before deletion. The sender gets no bounce and no signal, so they keep sending.
Usually one of three things: the sender rotated to a new address, you blocked it in Samsung Email so the rule never left the device, or it's a text from an email address rather than an actual email. Check which app the message actually arrived in.
In Google Messages, tap your profile picture, open Messages settings, then Spam protection, and turn on Enable spam protection. For anything that gets through, open the conversation, tap the three-dot menu, and block or report it there.
For a few months. If you use the new address the way you used the old one, it lands on the same lists. The habit matters more than the address: route new signups to a disposable inbox and keep the real one small.
The take
Work out which app the spam is actually landing in before you tap anything. Half the "blocking doesn't work on Android" complaints are someone blocking in Samsung Email and then reading the same mailbox in Gmail, or blocking in Gmail a message that arrived as a text.
Once you know, block on the provider's side so the rule travels, and reach for Report spam over Block whenever the sender is bulk. One trains a filter that keeps working while you sleep. The other maintains a list by hand against senders who mint new addresses for free.
Then fix the intake. Every address you type into a signup form is a spam problem on a delay fuse. Type one you don't mind losing.
Keep reading
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