Comment 101 for bug 490935

Why this is important:

1. You personally may not, but many users have fax->email services. For them, this feature is absolutely necessary. For a long time, I didn't realize that there was an extension that allows it and works well, the lack of which causing me a lot of pain.

2. If people set bad subjects for important emails (e.g. by just hitting reply on an unrelated subject), I can either get angry at them (because I will not find it anymore in one week), or ask them to fix it in the future, or I can fix it myself in my mail store. The latter, however, I can only do with this feature.

3. Many other people have wrong clocks on their computers, and Thunderbird sorts folders by the message send time that the sender put in. I recently received a mail which was exactly one month off. Completely confused me in the folder view. I can't fix it, without this feature. (Arguably, Thunderbird should sort better.)

This is similar to "delete attachment" feature. That's also a feature that we didn't have for a long time, and some said we didn't want it, they said it's freaky and wrong. Finally, we added it - and it's indispensable, as it turned out.