Outlook Tip: Never Forget to Send Attachments

Email featured

Have you ever sent an email saying you attached a file but forgot to include it? Outlook includes a handy feaure that kicks in if you forget to attach a file.

While sending a lot of emails on a busy day, have you ever sent a message saying you attached a file but forgot to include it? Outlook 2013 includes a handy feature that reminds you if it appears you forgot to attach a file.

Outlook Attachment Reminder

The setting should be enabled by default, but to double-check launch Outlook on your PC and click on File.

Outlook File

Now from the File pane scroll down and click on Options.

Outlook Options

Now, from the menu panel on the left click on Mail. Then under the Send Messages section, verify that “Warn me when I send a message that may be missing an attachment” is checked.

Outlook-Send Message

Here’s the typical scenario: You compose an email letting the recipient know you’ve attached a file, but forget to actually include it and hit Send.

Outlook mail message

Outlook will give you an Attachment Reminder message. Click the Don’t Send button, attach the file, and send the message.

Do not send error message missing attachment

Outlook 2013 and higher looks for a sequence of words in the body and subject of the email. Words that will trigger the reminder would be obvious ones like “attach” and “attachment.” Or phrases like “print attachments,” “enclosed,” “see the attached spreadsheet”…etc. It might not always work (depending on the sequence of words), but it’s good to know this feature will have your back. Especially if you’re sending something to your boss and don’t want to be embarrassed by forgetting it.

If you use Microsoft’s webmail service, it also has an Attachment Reminder you can enable.


If you’re using an older version of Outlook, check out a third-party tool like Code Two Outlook Attachment Reminder.



  1. Steve Krause

    April 1, 2013 at 4:14 pm

    Great feature! I use this all the time. Great tip.

  2. reholmes

    April 2, 2013 at 8:48 am

    At last! I suggested this to MS two decades ago.

    • Steve Krause

      April 2, 2013 at 10:40 am

      hehehe for sure! Can’t tell you how many times I’ve been told — Um Steve… you forgot the attachment!

      • Richard Holmes

        January 6, 2014 at 10:09 am

        . . . now that I no longer use Outlook :-(

        • Steve Krause

          January 6, 2014 at 1:42 pm

          Really? What’s your primary email client now? Let me guess… Web browser?

          • Richard Holmes

            May 1, 2014 at 12:04 pm

            Now that I’m no longer “corporate” I don’t need such a monster, albeit powerful, mail app, so I went to Outlook Express.

  3. john

    January 6, 2014 at 8:48 am

    It read my mind just now :)

  4. Paul Hughes

    May 1, 2014 at 7:06 am

    We are all on Win 7 and Office 2013 and this feature will not work. We’ve even tried deliberately sending emails with just “attached, attachment…” etc to try and provoke it!

    • Steve Krause

      May 2, 2014 at 8:49 am

      Hi Paul – And even after following this guide and rebooting, you’re having the issue on multiple systems?

  5. Richard Holmes

    May 1, 2014 at 12:05 pm

    If you are using Outlook as your mail app, it should work.

  6. Rodrigo

    February 12, 2016 at 11:44 am

    Is there any way to add more words that will trigger the reminder?

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