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You are here: Home / Guides / iOS 17: How to Mark an Email as Unread on iPhone – A Step-by-Step Guide

iOS 17: How to Mark an Email as Unread on iPhone – A Step-by-Step Guide

posted on May 7, 2025

Ever been in a rush and accidentally opened an email you intended to read later? Or maybe you just want to keep a message marked as new for easy reference. Whatever the reason, marking an email as unread on your iPhone is a handy trick to know. It’s a simple process that takes only a few taps. Let’s get into it.

Step by Step Tutorial: Marking an Email as Unread on iPhone

Before we dive into the steps, it’s important to know that marking an email as unread will make it appear as if you never opened it. This can be useful for keeping track of important messages or for returning to them later.

Step 1: Open the Mail App

Open your Mail app on your iPhone.

This is the app where all your email accounts are linked and where you can view all your emails.

Step 2: Navigate to the Inbox

Go to the inbox where the email you want to mark as unread is located.

You may have several inboxes if you have multiple email accounts connected to your Mail app.

Step 3: Find the Email

Locate the email that you want to mark as unread.

Scroll through your inbox or use the search function to quickly find the specific email.

Step 4: Swipe Left on the Email

Swipe left on the email to reveal options.

A short swipe will reveal a menu of options next to the email.

Step 5: Tap on the Unread Button

Tap on the blue unread button that looks like an open envelope.

The email will then be marked as unread, and the envelope icon will turn blue.

Once you’ve completed these steps, the email will reappear as new, with a blue dot next to it to indicate that it has not been read. This can help you keep track of important messages or remind you to go back to them later.

Tips for Marking an Email as Unread on iPhone

  • Be careful not to swipe too hard or too fast, as it might archive or delete the email instead of marking it as unread.
  • If you accidentally mark an email as read, simply follow the same steps to mark it as unread again.
  • You can also mark multiple emails as unread by using the "Edit" option and selecting multiple emails.
  • Remember that marking an email as unread will not undo any actions taken in the email, like clicking on links or replying to it.
  • Use this feature to prioritize emails that require a response or action from you.

Frequently Asked Questions

How do I mark an email as unread if I’ve already opened it?

To mark an email as unread after opening it, tap the email to open it, then tap the flag icon at the bottom and choose "Mark as Unread."

Can I mark an email as unread from the notification center?

No, you cannot mark an email as unread directly from the notification center. You must open the Mail app and follow the steps outlined above.

Will marking an email as unread remove it from the "unread" filter if I have that set up?

No, marking an email as unread will not remove it from any custom filters or smart folders you have set up for unread emails.

Is there a way to mark all emails as unread at once?

Yes, you can use the "Edit" option in the top right corner of the inbox, select all emails, and then choose "Mark as Unread" from the bottom menu.

Does marking an email as unread sync across all my devices?

Yes, if you’re using an IMAP email account (which most are), marking an email as unread on your iPhone will sync across all devices connected to that email account.

Summary

  1. Open the Mail app.
  2. Navigate to the inbox.
  3. Find the email.
  4. Swipe left on the email.
  5. Tap on the unread button.

Conclusion

Whether you’re a busy professional juggling multiple emails a day or someone who likes to keep their inbox organized, knowing how to mark an email as unread on your iPhone is a nifty little skill that can make email management a breeze. It’s one of those features on iOS 17 that’s simple yet effective, and once you get the hang of it, it’s a game-changer for ensuring you never miss out on important correspondence again. Plus, it gives you the freedom to come back to emails at your own pace, without losing track of them. So, give it a try—your future self will thank you for that extra layer of organization in your digital correspondence.

Matthew Burleigh
Matthew Burleigh

Matthew Burleigh has been a freelance writer since the early 2000s. You can find his writing all over the Web, where his content has collectively been read millions of times.

Matthew received his Master’s degree in Computer Science, then spent over a decade as an IT consultant for small businesses before focusing on writing and website creation.

The topics he covers for MasterYourTech.com include iPhones, Microsoft Office, and Google Apps.

You can read his full bio here.

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