The fastest way to block spam on iPhone

Open the email you want to block, tap the flag icon at the bottom right, then tap "Block This Contact." The sender's future emails go straight to trash and you won't see notifications from them. This works in the Mail app on any iPhone running iOS 13 or later.

If you're using Gmail, Outlook, or another email service through the Mail app, blocking works the same way — the block setting syncs back to your email account's server, so the sender stays blocked even if you check email on a computer.

For emails already in your inbox that you didn't block yet, swipe left on the message, tap the trash icon, then tap "Block This Contact" from the menu that appears. You can also select multiple emails from the same sender by tapping "Edit" in the top left, checking the boxes, then tapping "Block" at the bottom.

Key Takeaways

  • Tap the flag icon on any email and select "Block This Contact" to send that sender's future messages to trash automatically.
  • Blocked senders' emails disappear from your inbox and you receive no notifications, but the messages stay on your server in case you need them later.
  • You can block multiple senders at once by selecting their emails, tapping "Edit," and choosing "Block" from the bottom menu.
  • Gmail, Outlook, and other services accessed through Mail app sync your blocks across all devices where you check that account.
  • Unblocking a contact is just as fast: go to Settings > Mail > Blocked Contacts, swipe left on the name, and tap "Unblock."

Where blocked emails actually go

When you block a contact in the Mail app, their emails don't disappear from your account entirely — they move to a hidden folder on your email provider's server. You can still see them if you need to, but they won't clutter your inbox or trigger notifications.

To find blocked emails later, open Settings on your iPhone, scroll down and tap "Mail," then tap "Blocked Contacts." You'll see the full list of people you've blocked. If you need to read an email from someone on that list, you have to unblock them first — there's no way to view blocked messages without unblocking the sender.

This is different from deleting. Deleted emails go to your Trash folder for 30 days before your email provider removes them permanently. Blocked emails stay on the server indefinitely, just hidden from view.

Using VIP and mute to reduce clutter without blocking

If you want to stop seeing emails from someone but aren't ready to block them completely, you have two gentler options: muting the conversation or moving them out of VIP.

To mute an email thread, swipe left on the message and tap the speaker-with-slash icon. Muted emails still arrive in your inbox, but you won't get notifications for them. You can unmute anytime by swiping left again and tapping the speaker icon.

For senders you want to keep around but deprioritize, remove them from your VIP list. Swipe left on their email, tap "Mark as VIP" to toggle it off, and their future messages will no longer show up at the top of your inbox or trigger special VIP notifications. This is useful for newsletters or promotional emails you occasionally want to read but don't need to see when ready.

Blocking spam from email addresses that keep changing

Some spam comes from addresses that look similar but aren't quite the same — like "support@company.com" one day and "support2@company.com" the next. Blocking individual addresses won't stop this pattern.

Instead, create a rule in your email provider's web interface. Log into Gmail, Outlook, or Yahoo on a computer, find the spam email, and look for a "Create filter" or "Create rule" option. You can set it to catch emails from a domain (anything @company.com) or emails containing certain words in the subject line. These rules work across all your devices, including iPhone.

If you use Gmail, open the email, click the three-dot menu, select "Block [sender]," and Gmail will automatically filter out that address and similar ones. For Outlook, click the three-dot menu, choose "Junk," then "Block Sender" — Outlook will catch variations of that address too.

Reporting spam to your email provider

Blocking stops you from seeing spam, but reporting it helps your email provider identify patterns and protect other users. In the Mail app, swipe left on a spam email and tap "Report Junk." This sends a copy to your email provider's abuse team.

For Gmail, swipe left and tap "Report Spam." For Outlook, swipe left, tap "Junk," then "Report Phishing" if it looks like a scam or "Report Junk" for regular spam. Each report you send makes the filters smarter, so future similar emails are more likely to land in spam automatically for everyone.

Never reply to spam or click links in suspicious emails, even to unsubscribe. Replying confirms your address is active and usually leads to more spam. If an email claims to be from your bank or a service you use, go directly to their website or app instead of clicking anything in the email.

Unblocking a contact if you change your mind

Open Settings, tap "Mail," then scroll down and tap "Blocked Contacts." You'll see everyone you've blocked. Swipe left on the name you want to unblock and tap "Unblock." That person's emails will start appearing in your inbox again, and you'll get notifications from them as normal.

Unblocking doesn't automatically move old emails from that sender back to your inbox — they stay in the hidden blocked folder. If you need to see those old messages, you'll have to ask the sender to resend them, or log into your email on a computer and search for them manually.

Frequently Asked Questions

Can someone tell if I've blocked them?

No. When you block a contact, their emails straightforward don't reach your inbox. They won't receive a notification that you blocked them, and if they try to email you, they won't get a bounce-back message saying you blocked them. From their perspective, the email just disappears into your account.

What's the difference between blocking and marking as spam?

Blocking moves a specific contact's emails to a hidden folder. Marking as spam tells your email provider that an email is unwanted and trains the spam filter to catch similar messages in the future. You can mark an email as spam without blocking the sender, and vice versa.

Do I need to block spam on my computer too?

If you block someone in the Mail app on iPhone, the block syncs to your email account on the provider's server, so they're blocked on your computer and any other device you use. You don't have to block them twice.

Can I block an entire domain instead of one email address?

The Mail app only blocks individual email addresses. To block an entire domain, log into your email provider's website on a computer and create a filter or rule. Gmail, Outlook, and Yahoo all let you filter by domain name.

What happens to emails from blocked contacts if I get a new iPhone?

Your blocked contacts list is stored on your email provider's server, so when you sign into your account on a new iPhone, all your blocks transfer automatically. The blocked emails stay hidden on the new device too.