The fastest way to block an email sender depends on which service you use

Most email services let you block a sender in one or two clicks. Gmail, Outlook, Yahoo Mail, and Apple Mail all have a block button built into the message itself — usually marked "Block" or "Report spam" in the menu next to the sender's name. When you block someone, their emails go straight to spam and you stop seeing notifications from them.

Blocking works best for individual senders you recognize and want to stop hearing from. If you are getting spam from many different addresses, or if the sender is spoofing a familiar name, blocking one address at a time will not solve the problem. For those situations, you need filters or rules instead.

Key Takeaways

  • Blocking a sender takes seconds and sends their future emails directly to spam, but only works if the sender is using their real address.
  • Filters and rules let you automatically sort, delete, or flag emails based on words in the subject line or sender address, and work against spoofed addresses.
  • Unsubscribe links at the bottom of marketing emails are legitimate when they come from real companies, and using them is faster than blocking.
  • If you are getting emails from a spoofed address (one pretending to be your bank or a friend), blocking the fake address does not stop the real sender.
  • Never reply to spam or click links in suspicious emails, even to unsubscribe — that confirms your address is active and often makes the problem worse.

How to block a sender in Gmail, Outlook, Yahoo, and Apple Mail

Gmail: Open the email from the sender you want to block. Click the three-dot menu in the top right corner of the message. Select "Block [sender's name]". Gmail will move that sender's emails to spam automatically from that point forward.

Outlook (web version): Open the email. Click the three-dot menu at the top right. Select "Block". You can also right-click the sender's name in your inbox and choose "Block sender" directly.

Yahoo Mail: Open the email. Click the three-dot menu. Select "Block sender". Yahoo will move future emails from that address to spam.

Apple Mail (on Mac or iPhone): On Mac, open the email and click the flag icon at the top right, then select "Block Contact". On iPhone, swipe left on the email in your inbox and tap "Block Contact". On both devices, you can also open the email and tap the sender's name, then select "Block this Contact".

When to use filters instead of blocking

Filters (called "Rules" in Outlook) let you automatically sort, delete, or flag emails based on patterns — like all emails with a certain word in the subject line, or all emails from a domain you do not recognize. Filters are more powerful than blocking because they work even when the sender is using a different address each time.

Use a filter when you are getting spam from many addresses, or when the sender is spoofing a familiar name. For example, if you are getting fake bank alerts with subject lines like "Urgent: Verify your account", you can create a filter that catches any email with those words and sends it to spam, regardless of who it claims to be from.

Gmail: Open an email that matches the pattern you want to filter. Click the three-dot menu. Select "Filter messages like these". Choose what to do with matching emails (delete, archive, mark as spam, or add a label). Click "Create filter".

Outlook: Click the Settings gear icon. Select "View all Outlook settings". Go to "Mail" then "Rules". Click "Add new rule". Set the condition (sender address, subject line keywords, or message body keywords) and the action (move to folder, delete, or mark as junk). Click "Save".

Yahoo Mail: Click the Settings gear. Select "More Settings". Go to "Filters". Click "Add new filter". Set the condition and action, then click "Save".

Apple Mail: Open Mail. Go to "Mail" menu, then "Preferences". Click "Rules". Click "Add Rule". Set the condition (from, subject, or message content) and action (delete, move to folder, or mark as spam). Click "OK".

Unsubscribe links: when they are safe and when they are not

Legitimate marketing emails from real companies include an unsubscribe link at the very bottom of the message. These links are required by law in most countries. Clicking them removes you from that company's mailing list and is usually faster than blocking.

Do not click unsubscribe links in emails you do not recognize or trust. If an email claims to be from your bank, a payment service, or a social media account, but you did not sign up for it, the unsubscribe link may not be real. Clicking it can confirm that your address is active and lead to more spam. Instead, block the sender or create a filter.

A real unsubscribe link will take you to a page where you can confirm you want to be removed. It will not ask for your password, account number, or personal information. If the page asks for anything beyond confirming your email address, close it and block the sender instead.

What blocking does not stop

Blocking a sender only works if that sender keeps using the same email address. If someone is spoofing a familiar name — pretending to be your bank, a friend, or a company — blocking one fake address will not stop the real sender from creating new fake addresses and sending more emails.

Spoofed emails often come from compromised accounts or automated systems that generate new addresses for each message. In these cases, a filter is more effective than blocking. You can filter by subject line keywords, sender domain, or message content instead of relying on a single address.

If you are being harassed by someone using real addresses, blocking each one as it appears will eventually exhaust their options. But if the harassment is severe or ongoing, contact your email provider's abuse team directly. Gmail, Outlook, Yahoo, and Apple all have forms where you can report harassment and request additional help.

Why you should never reply to spam or click links in suspicious emails

Replying to spam — even to ask them to stop — confirms that your email address is active and monitored. This makes your address more valuable to spammers and often leads to more emails, not fewer. The same is true for clicking links in suspicious emails, even if you are just trying to unsubscribe.

Clicking a link in a suspicious email can also read malware or take you to a fake login page designed to steal your password. If you are unsure whether an email is real, go directly to the company's website by typing the address into your browser, rather than clicking any link in the email.

The safest approach is to block or filter first, and only click unsubscribe links in emails you recognize as coming from legitimate companies you actually signed up for.

Frequently Asked Questions

Does blocking someone prevent them from seeing my emails?

No. Blocking only stops you from receiving their emails — it does not prevent them from sending to you or seeing emails you sent in the past. If you need to prevent someone from contacting you at all, you may need to change your email address or contact your email provider's abuse team for additional options.

Can I unblock someone after I block them?

Yes. In Gmail, go to Settings, then "Filters and Blocked Addresses", and click "Unblock" next to the sender's name. In Outlook, go to Settings, then "Mail", then "Junk email", and remove the address from the blocked senders list. In Yahoo and Apple Mail, the process is similar — find the blocked contacts list in settings and remove the address.

What should I do if I am getting emails from my own email address?

This usually means your account has been compromised or someone is spoofing your address. Change your password when ready, then check your account recovery options (phone number, backup email) to make sure they are still correct. If you see suspicious activity, contact your email provider's support team. Do not reply to these emails or click any links in them.

If I block someone on my phone, does it block them on my computer too?

Yes, for Gmail, Outlook, Yahoo, and Apple Mail. Blocking is tied to your account, not your device, so the block applies everywhere you access that email account. The exception is Apple Mail on Mac — if you use Apple Mail on both devices, the block syncs through iCloud, but if you use different email services on different devices, you may need to block separately.

Can I block all emails from a certain domain or company?

Blocking works on individual addresses, but you can use a filter to block all emails from a domain. In Gmail, create a filter with the condition "from: @companydomain.com" and set it to delete or mark as spam. In Outlook, create a rule with the same condition. This catches all addresses from that domain, even if they use different names.