How to Mark Mail as Spam in iOS Mail

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

Message sticking out of a green envelope

Moving an email into the spam folder on your iPhone removes it from the folder it was in while at the same time notifying the email provider that the sender is delivering spam messages.

The spam folder might be called something different depending on the email client, but for the Mail app on iOS, it's called Junk. Marking an email as spam or moving it into the spam folder will place the message in the Junk folder.

These steps apply to the Mail app for iPhone but might be able to be adapted slightly to apply to other iPhone email programs.

Marking Emails as Junk on an iPhone

There are a few ways to move an email into the Junk folder on your phone. The method you choose should depend on where you're at in the Mail app or how many emails you want to send to spam at once.

If the email is already open, tap the folder icon at the bottom and then choose Junk. It will go directly into the Junk folder.

Folder icon, Junk mail button, Junk mailbox on iOS

If you're viewing the list of emails, tap Edit at the top, select the one or more emails you want marked as spam, and then choose either Mark > Move to Junk or Move > Junk.

Edit button, Mark button, Move to Junk button on iOS

Another method you can use from the list of emails is to swipe left on the junk email so that you can see a few buttons appear next to the message preview. Tap More > Mark > Move to Junk or More > Move Message > Junk.

More, Mark, Move to Junk buttons on iOS

What Happens When You Move an Email to Spam

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. If the Junk folder doesn't exist on the email's server, Mail creates it.

The Mail app can identify the spam folder from various email services, like iCloud MailGmail, Outlook Mail, Yahoo Mail, AOL, Zoho Mail, and Yandex Mail.

The effect of moving messages from the Inbox folder or any other location into the Junk folder depends on how your email service interprets the action. Most 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.

The iOS Mail app doesn't come with spam filtering; it relies on your mail provider to filter spam appropriately.