Thunderbird Portable

I read that I can launch "normal" Thunderbird with the "-p" parameter to get to the ProfileManager and switch there to "Offline Mode".

That in turn would open TB without access resp. message transfer connections in+outside.

Perfect. Thats exactly what I am searching (for temporary test purposes).

Unfortunately users cannot start PortableApps Thunderbird with the "-p" parameter..

ThunderbirdPortable.exe -p

So how else can I switch PortableApps Thunderbird to "Offline Mode"?

Starting today, it was impossible to get the profile up, I was presented with a blank page.

for the moment, my workaround was to install thunderbird on my PC, click on troubleshoot, then about:profiles, and finally create a new profile by pointing to my exiting one, copied from the portable installation, and making that the default. (the portable application has to be closed at that point, or it won't allow you access).

I couldn't direct to the portable profile from the portable app, it defaults to local appdata and won't redirect to the portable.

[Same experience with newest versions of Portable Firefox]
Windows 10 Pro 1909 18363.1139

I have been using TB Portable for several years, successfully. Recently, with the update to v78 and up, my TB Portable installs have started to fail (on several different systems). I still have a backup version of v68 and it seems to still be working.

I have Thunderbird on two PCs, one has version 68 and the other has version 78.
I want to use PortableThunderbird, but I don't understand where I have to move the folders containing the data.

Can I keep the data folders outside the PortableApps folder and point to it with some profiles.ini?

To prevent Thunderbird from automatically updating to latest version, create a file named App/Thunderbird/distribution/profiles.json with the following content:

{
"policies": {
"DisableAppUpdate": true
}
}


When an application like firefox or thunderbird portable tells us that there is an update, if we update, it is still just as portable? Or maybe it would be better to continue installing the different versions that appear on portableapp.com?

Thanks

From a couple of hours ago I can no longer access my office email account (Gmail-based). Google sent me a message, saying that it had blocked my access, because Google considered Thunderbird portable apps “doesn't meet our security standards”.

Having routinely relied on Thunderbird portable apps for the past 20 years, this news shocked me. Did anyone experience the same? Does anyone have any advice on how to meet this challenge? Thanks.

Before I heard of Portable Thunderbird I tried -- successfully but not enough for me -- to do this myself using mainstream Thunderbird and just inputting the removable drive as the installation directory.

This was a Windows 10 Dell laptop that had had the previous installation of Thunderbird on its C: drive deleted, including ALL Mozilla/Thunderbird directories. The removable drive (D:) was an SDHC.

The new Thunderbird was 78.2.2 and the custom install settings were:

Install Location D:\Mozilla Thunderbird\
Install Maintenance Service

I have standard Thunderbird installed in the standard location on my C: drive.
I just created a fresh install of Thunderbird Portable on a thumb drive using the PortableApps app.
Before creating ANY account or profile information, I navigate to /// -> Help -> Troubleshooting Information.
I see that the Update Folder parameter is pointing to a directory in C:\ProgramData\Mozilla\updates; this is NOT portable.