How to Mark Mail as Spam in iOS Mail

Marking spam as junk instructs email clients to update their spam filters

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The iOS Mail app offers a couple of ways to move mail to a Junk folder — even in bulk. Among the convenient features that come with ​an email account that is web-based is spam filtering right at the server. Moving mail to the Junk folder in iOS Mail notifies the spam filter at the server that it missed an unwanted spam email, so it can stop it next time.

How to Mark a Message as Junk in iOS Mail

To move a message to an account's Junk folder in iOS, open the inbox that contains the email. With the spam message open:

  1. Tap the flag button.

  2. Select Move to Junk from the menu.

    Inbox in iOS Mail showing the flag menu.
  3. Repeat for any individual messages that you consider spam.

In the message list:

  1. Swipe across the message from the right to left just enough to reveal the More menu. 

  2. Tap More.

  3. Select Mark… from the menu that appears.

    The iOS Mail app with the More menu opened in the message list.
  4. Now select Move to Junk.

    The iOS Mail app with the flag menu opened after the mark option was selected.
  5. Repeat for any individual messages that you consider spam.

Mark Mail as Spam in Bulk With iOS Mail

To move more than one message to the Junk folder at the same time in iOS Mail:

  1. Tap Edit in the message list.

  2. Tap all messages you want to mark as spam so that they—and only they—are checked.

  3. Tap Mark.

  4. Select Move to Junk from the menu that opened.

    The iOS Mail app with multi-select options for moving marked messages to the junk folder.
  5. Repeat the procedure if you missed any messages.

The Effect of Marking Mail As Junk

The iOS Mail app does not come with spam filtering; it relies on your mail provider to filter spam appropriately.

When you instruct iOS Mail to move a spam email to the Junk folder, it does just that, as long as it knows about the account's spam folder as it does for iCloud MailGmail, Outlook Mail, Yahoo Mail, AOL, Zoho Mail, Yandex Mail, and some others. If the Junk folder does not exist in the account, iOS Mail creates it.

The effect of moving messages from the inbox or any other folder to the Junk folder depends on how your email service interprets the action. Most common email services treat messages you move to the Junk folder as a signal to update their spam filter to identify similar messages in the future.

How to Block Individual Email Senders on iPhone or iPad

Spam filters aren't perfect. If you end up receiving spam email in the iOS Mail app even after you mark the sender or email address as Junk, the best solution is to block the sender entirely. Tap Settings > Messages > Blocked > Add New and then type or paste in the sender's email address to block all email from that address.