Odd email query

[FourWheelDrift]

I am and have been running Mozilla Thunderbird for the last few months and I am getting some odd spam email.

It's subject line is usually - Re [3] - or a different number in the brackets. They advertise different things.

The thing is I get the occasional one (perhaps once a week) overnight and without looking at it or selecting it, it is already marked as read (no longer bold). Does anyone know how this is done?

PS. No one else can read my emails and it's only these odd spam ones that it happens to.

[_dobbo_]

This is a total guess...

Doesn't thunderbird have a built in Spam filter? I've not really looked at it much other than a quick mess about, but I remember being able to define Good vs Junk mail.

Is it possible that the junk filter is moving this mail to a junk folder, hence it's read / deleted flag gets changed?

[simpo two]

I've had a quite a lot of spam with that format, though not in bold. It goes down the spam chute to join its squealing colleagues in cyber-oblivion

[FourWheelDrift]

Thunderbird does have a spam filter but it flags things it thinks are spam and highlights it with an icon. I don't run any spam filter automatically as I get very few on this email address.

These ones do not have any Junk mail icons and are still in my inbox, not moved to any other folder.

All very odd.

[rjo]

Could it have something to do with the Message Filters.
Perhaps look in Message>Create Filter From Message...
Click and see if one of the options is checked.

[FourWheelDrift]

Nope, no filters running or checked. I've never touched them since installing Thunderbird.

I think it must be something on the message senders side, like the trick of being able to send an email to someone in Outlook that shows the message in Bold Red in their inbox, just because you added a "review by" date that was overdue before you sent it.