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Uninstall Plugins from Mac Mail App on Mac OS

This guide is about the How to Uninstall Plugins from the Mac Mail App in Mac OS X. I will try my best so that you understand this guide very well. I hope you all like this guide How to Uninstall Plugins from the Mac Mail App in Mac OS X.

There are a lot of useful Mail plug-ins for Mac OS X, but sometimes they wear out or the plug-in isn’t updated to a new version of Mac Mail, which makes it unusable. If you’ve ever wanted to remove a Mail plug-in from Mac OS X, you’ve probably noticed that, unlike Safari, plug-in control isn’t available in app settings. Instead, you’ll need to manually remove Mail extensions by deleting those files. This is not the most intuitive process in the world, but it is also not too complicated.

Note that when you’re on a file system, Mail extensions are called “Mail Bundles,” which are usually folders with a .mailbundle suffix. Mail extensions can be stored in two places, depending on how they were installed and their purpose. It’s best to check both locations if you’re removing plug-ins for troubleshooting purposes.

Uninstall system-wide mail extensions on Mac OS

These are extensions that are installed system-wide, which means that all Mac user accounts can access them through Mail.

  1. Exit Mail
  2. In Mac OS X Finder, click Command + Shift + G and go to the following path:
  3. / Library / Post office / Packages /

  4. Find the extension you want to remove, usually called PluginName.mailbundle, and drag it to the Trash
  5. Restart Mail if you’re done

Uninstall the Mail plug-in

Next, check the user’s Mail extension directory. The path looks almost identical, but they are two separate locations on the Mac file system.

Remove user mail extensions from Mac Mail

You also want to check the user’s Mail Bundles directory, deleting user extensions is the same as above, except that the directory path is different:

  1. In Mac OS X Finder, click Command + Shift + G and point to the following path:
  2. ~ / Library / Post Office / Bundles /Mail plug-in location

  3. Remove the extension as needed (with a .mailbundle suffix) by dragging it to the Trash
  4. Restart the Mail application

If you go to one of the / Library / Mail / Bundles / directories and find them empty, it is because the plug-ins are not in that location or are no longer active. Assuming Mac OS X has disabled the plug-in itself, you can usually find these disabled plug-ins in the following location:

~ / Library / Post Office / Parcels (disabled) /

You can also just go to the top-level directory and look for both Bundles folders:

~ / Library / Post Office /

Mail extension directories and location in OS X.

This process is the same for all versions of Mac OS X and all versions of Mac Mail.

Outside of general usability, uninstalling Mail plug-ins can also become a necessary operation if the Mail application crashes occasionally or behaves incorrectly in general, especially when a new plug-in is installed. If you’re only testing plug-in compatibility, you may want to temporarily move it to another directory instead of the Recycle Bin, and then build the mailbox before trying again. You also want to make sure that the plug-in is the latest version, as updates can solve many compatibility issues.

This is also the same process you perform if you ever encounter an “Incompatible Plugins Disabled” window when you start Mail, which tells you which plug-ins have been disabled, but again, does not provide any functional information or plug-in managers to remove they. If you see this type of window warning:

Incompatible Mail extension message

Repeat the steps above to locate that extension, remove it, and then restart Mail. The alert window should now be gone and the Mail application will work as usual.

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FAQ: How to Uninstall Plugins from the Mac Mail App in Mac OS X

In this guide, I told you about the How to Uninstall Plugins from the Mac Mail App in Mac OS X.

In this guide, I discuss about the How to Uninstall Plugins from the Mac Mail App in Mac OS X, which is very helpful.

Apple Devices only.

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James Hogan
James Hogan is a senior staff writer at Bollyinside, where he has been covering various topics, including laptops, gaming gear, keyboards, storage, and more. During that period, they evaluated hundreds of laptops and thousands of accessories and built a collection of entirely too many mechanical keyboards for their own use.

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