Notes about Thunderbird.
Remote images
By default Thunderbird 8 blocks remote images. You can show these images for a particular email by clicking the ‘show remote content’ button, but beware that there’s no easy way to undo this (you have to reset the mail summary file - see the ‘Hide remote content’ section below).
To show remote images in all emails from a particular sender simply add them to your address book, selecting ‘Allow remote content’.
You can show remote images by default - in all emails - by setting mailnews.message_display.disable_remote_image to true via the config editor (at Edit -> Preferences -> Advanced -> Config Editor).
References
- Bug 626988 - In some messages, it is not possible to revoke remote image permissions.
- Want to “undo” show remote content
- How to Block Remote Images in thunderbird?
- Blocking and unblocking remote images
- Get Thunderbird to show remote images by default
- Privacy basics - Thunderbird
Hide remote content
If you accidentally click the ‘show remote content’ button in an email then Thunderbird 8 will always show remote content for that message - there’s no ‘hide remote content’ button nor any easy way to undo it. There is however a workaround, where you delete the mail summary file associated with the message and let Thunderbird recreate it.
From Bug 626988 - In some messages, it is not possible to revoke remote image permissions.:
… what you can do for an interim resolution for specific messages is to go into your Mail folder in your TB profile and rename or delete the *.msf file that resides in the folder where your message is stored in the GUI. This will affect all messages in the folder, and not only will they all lose their previous associations with downloaded remote content (if any), but the folder itself will revert to the default views (sort order, threaded or not, etc.) You can search the net for detailed instructions on how to locate your TB profile, Mail folder, and .msf file.
