How to start portable Thunderbird with safe mode? if something wrong with extension and theme, we need this to start Thunderbird.
New: MBox Viewer (Mar 22, 2026), Platform 30.3 (Mar 29, 2026)
1,400+ portable packages, 1.2 billion downloads
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Just use the ini file. There's an example in PortableThunderbird\Other\PortableThunderbirdSource. Copy the PortableThunderbird.ini file to the PortableThunderbird directory... next to PortableThunderbird.exe. Change the AdditionalParameters line to be:
You can also pass it as a parameter to PortableThunderbird.exe and it'll just pass it to thunderbird.exe.
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Thanks, I love this software. Thanks again for your reply!
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