How to Fix: Disable Thunderbird Attachment Reminder

Dennis Faas's picture

Infopackets Reader Barb S. writes:

" Dear Dennis,

I just upgraded to Windows 10 and did not like the default email client, so I decided to give Mozilla Thunderbird a try. So far it is an excellent email program; however, one thing that is driving me nuts is the way that Thunderbird constantly pops up with a message 'Found an attachment keyboard: attached' every time I type in 'attached' or 'attach', when composing an email. I would prefer not to be reminded of this every time I type those words. Is there any way to disable the Thunderbird attachment reminder messages, or whatever they're called? "

My response:

It's been a while since I've had this issue as I also found the Thunderbird 'attachment reminders' rather annoying. That said, I did manage to find how to disable the attachment reminders after a bit of fumbling through the menus.

How to Fix: Disable Thunderbird Attachment Reminder

To disable the attachment reminders and keep Thunderbird quiet while composing your emails, do the following:

  1. First, launch Thunderbird.
  2. If you have the menu bar enabled (which displays: File, Edit, View, etc at the very top of the page): click the Tools menu, then click Options. If no menu bar is enabled, then click the 'menu' button (it looks like a box with 3 lines at the top right of the screen), then click Options -> Options (that is not a typo).
  3. The 'Options' window will appear. Go to the Composition tab and un-checkmark the "Check for missing attachments" option, then click OK.

That should do it.

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About the author: Dennis Faas is the owner and operator of With over 30 years of computing experience, Dennis' areas of expertise are a broad range and include PC hardware, Microsoft Windows, Linux, network administration, and virtualization. Dennis holds a Bachelors degree in Computer Science (1999) and has authored 6 books on the topics of MS Windows and PC Security. If you like the advice you received on this page, please up-vote / Like this page and share it with friends. For technical support inquiries, Dennis can be reached via Live chat online this site using the Zopim Chat service (currently located at the bottom left of the screen); optionally, you can contact Dennis through the website contact form.

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dan_2160's picture

In the many years I've used Thunderbird, I've found this feature to be incredibly useful. So, while you can completely disable this feature, one might want to consider simply editing the keywords that trigger the warning.

To the right of the "Check for missing attachments" option is a button labeled "Keywords." You can edit the keywords that trigger the warning to whatever you wish. You can delete or add keywords. Your article got me to look at my list and I removed a bunch of triggering words. I've got it down to attachment, attached, and enclosed -- which should minimize the warnings and pretty much limit them to when I actually need to attach files.

Thanks for the article.