Rated 5 out of 5 stars

This fine add on need a patch to work with actual TB:

diff -Nur marksubfolders-1.0.2/chrome/content/markAllReadSubfolders.js marksubfolders-1.0.3/chrome/content/markAllReadSubfolders.js
--- marksubfolders-1.0.2/chrome/content/markAllReadSubfolders.js 2010-06-07 01:36:40.000000000 +0200
+++ marksubfolders-1.0.3/chrome/content/markAllReadSubfolders.js 2014-10-14 19:16:13.573989008 +0200
@@ -129,7 +129,13 @@
{
var version = Components.classes["@mozilla.org/xre/app-info;1"].
getService(Components.interfaces.nsIXULAppInfo).version;
- var appVer3Orlater = version.substring(0,2) == "3.";
+
+ var consoleService = Components.classes["@mozilla.org/consoleservice;1"].
+ getService(Components.interfaces.nsIConsoleService);
+
+ var mainVer = version.split(".");
+ var appVer3Orlater = mainVer[0] >= 3;
+ consoleService.logStringMessage("MarkSubfolders: Version=" + version + " mainVer:"+mainVer+" appVer3Orlater:"+appVer3Orlater );

// for backword compatibility
if (appVer3Orlater) {
@@ -162,3 +168,5 @@
// a) Support Thunderbird3.0beta4, and rewrite code.
// 1.0.2 2010/06/05
// Support Thunderbird 3.1 and rewrite code.
+// 1.0.3 2014/10/14
+// Support Thunderbird > 3.0
diff -Nur marksubfolders-1.0.2/chrome/locale/de/markallreadsub_description.properties marksubfolders-1.0.3/chrome/locale/de/markallreadsub_description.properties
--- marksubfolders-1.0.2/chrome/locale/de/markallreadsub_description.properties 2010-01-01 16:20:24.000000000 +0100
+++ marksubfolders-1.0.3/chrome/locale/de/markallreadsub_description.properties 2014-10-14 18:36:50.602260298 +0200
@@ -1 +1 @@
-extensions.markallreadsub@thunderbird.extension.description = Das Menü 'Unterordner als gelesen markieren', fügte in dem Ordner-Kontextmenü.
+extensions.markallreadsub@thunderbird.extension.description = Das Menü 'Unterordner als gelesen markieren', im Ordner-Kontextmenü.
diff -Nur marksubfolders-1.0.2/install.rdf marksubfolders-1.0.3/install.rdf
--- marksubfolders-1.0.2/install.rdf 2010-06-06 23:47:58.000000000 +0200
+++ marksubfolders-1.0.3/install.rdf 2014-10-14 19:15:15.721787497 +0200
@@ -5,7 +5,7 @@

<Description about="urn:mozilla:install-manifest">
<em:id>markallreadsub@thunderbird.extension</em:id>
- <em:version>1.0.2</em:version>
+ <em:version>1.0.3</em:version>
<em:type>2</em:type>

<!-- Target Application this extension can install into,
@@ -14,7 +14,7 @@
<Description>
<em:id>{3550f703-e582-4d05-9a08-453d09bdfdc6}</em:id>
<em:minVersion>1.5</em:minVersion>
- <em:maxVersion>3.2a1pre</em:maxVersion>
+ <em:maxVersion>31.*</em:maxVersion>
</Description>
</em:targetApplication>

Rated 5 out of 5 stars

To make this work in Thunderbird 10 you'll need to change:
install.rdf
to...
<em:maxVersion>10.*</em:maxVersion>
and change
chrome/content/markAllReadSubfolders.js (line 132)
to...
var appVer3Orlater = version.substring(0,3) == "10.";

The only difference with this to the previous hack suggested by George is that the version.substring must also be changed - subtle, but important...

Rated 5 out of 5 stars

Tested in W7 with TB 7.0.1 It is OK.

This user has a previous review of this add-on.

Rated 5 out of 5 stars

Before all the rapid release cycles this add-on worked very well. Now it is broken and hasn't been updated. I really liked this add-on when it worked.

The hack listed below by George does not work for me on Windows 7 and TB 7.0.1

Rated 5 out of 5 stars

After upgrading to Thunderbird version 7.0, I redid George's "trick", substituting 7 (in 2.) and 7. (in 4.), and it seems to work just as well under 7.0 as under 6.0.2.
I now run Thunderbird 7.0 on Ubuntu 11.04, 64bit

This user has a previous review of this add-on.

Rated 5 out of 5 stars

Please update to work with TB 5
I would love to be able to use this addon!

Rated 5 out of 5 stars

Awesome!! I've been looking for this feature for years--it only just now occurred to me that there might be an addon for it. Thanks for posting this!

This review is for a previous version of the add-on (1.0.1). 

Rated 3 out of 5 stars

The Italian localization contains errors. I would like to send you the correct translation but you did not leave any email address or website.
Bye

This review is for a previous version of the add-on (1.0.1). 

If possible, I will want to take in your localization.
Would you contact to gaby@pluto.dti.ne.jp?

Rated 5 out of 5 stars

Many, many thanks for this. You've saved me a LOT of time marking dozens of feed folders in TB3!

This review is for a previous version of the add-on (1.0.0). 

Rated 5 out of 5 stars

Je reçois des notifications par mail qui indiquent l’état des sauvegardes de plusieurs serveurs (OK) et qui sont ensuite mis dans des sous dossiers suivant les sites. Si je ne reçois pas de notification (pb de connexion ou autre) je sais celui qui n’a pas fonctionné. Avec ce module, je peux marquer les sous dossiers en une seule fois au lieu de le faire un à un, module indispensable !!!

This review is for a previous version of the add-on (0.0.2). 

Rated 2 out of 5 stars

Thunderbird (2.0.0.19-Ubuntu Linux) crashed when I asked it to mark subfolders read for my relatively simple tree (about 5 folders deep and about 40 - 50 folders total).

However, when I reopened Thunderbird, it had indeed marked them read. So, it works - just not in as stable of a manner as I would have wished. Luckily, I only needed it for a one-shot deal.

Many thanks for saving me about 30 minutes of right-click hell! ;)

This review is for a previous version of the add-on (0.0.2). 

Rated 5 out of 5 stars

あふれかえる読まないメールに悩んでいるあなたに是非!

This review is for a previous version of the add-on (0.0.2). 

Rated 3 out of 5 stars

Sometimes it worked, sometimes it didn't on my big, hairy, 2000-plug-folder tree. It saved me enough time that it was worth installing, even when I had to go manually "unread" subfolders it didn't catch.

This review is for a previous version of the add-on (0.0.2). 

Rated 1 out of 5 stars

I have a fairly complex folder tree. Was really hoping this would work when I imported all my emails to Thunderbird as all emails were marked as unread by default. I used MarkSubfolders which initially turned all the folders to read. This was great, however after a day or two some and at times all of the folders started to switch back to unread for apparently no reason. Since then sometimes the command does nothing when used and then at other times it has caused Tbird to hang. Not sure why this is, but it doesnt seem to be working quite idealy to say the least.

This review is for a previous version of the add-on (0.0.2). 

Rated 5 out of 5 stars

It works great! Have not had any problems.

This review is for a previous version of the add-on (0.0.2). 

Rated 5 out of 5 stars

I have a hairy folders tree used to sort out lots of automated emails, so I was hoping for this functions for monthes now; THANKS!!

The add-on does what it says it does, cleanly, no problem encountered.

This review is for a previous version of the add-on (0.0.2).