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*Thunderbird* is downloaded and installed in the background after you
connected to the Tor network.
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[[Connect to the Tor network.|doc/anonymous_internet/tor]]
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Tails also tries to install as additional software the language package
that corresponds to the language of this Tails session, if it exists. To
use *Thunderbird* in another language, see [[using *Thunderbird* in
another language|thunderbird#language]].
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Tails detects that you have both the **Thunderbird Email Client** and **Additional
Software** features of the Persistent Storage turned on and automatically
adds *Thunderbird* to your list of additional software.
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</div>
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<p>To reopen this page after restarting Tails, choose <b>Apps&nbsp;▸
Tails&nbsp;▸ Tails Documentation</b> and go to <b>Documentation&nbsp;▸
Uncensored and anonymous Internet&nbsp;▸ Emailing and reading news with
Thunderbird</b>.</p>
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<div class="tip">
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Restart Tails.
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Close the Persistent Storage settings.
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Turn on the **Thunderbird Email Client** feature.
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Make sure that the **Additional Software** feature is turned on.
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Create a Persistent Storage if you don't have one already.
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Choose **Apps&nbsp;▸ Tails&nbsp;▸ Persistent Storage** to open the Persistent Storage settings.
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To install *Thunderbird* as additional software:
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By installing *Thunderbird* as additional software, the latest version of *Thunderbird* is installed automatically from your Persistent Storage each time you start Tails.
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A new version of *Thunderbird* is released in Debian shortly after each Tails release, because both *Tails* and *Thunderbird* follow the [[release calendar of *Firefox*|https://whattrainisitnow.com/calendar/]]. As a consequence, until Tails 7.5 (February 2026), the version of *Thunderbird* in Tails was almost always outdated, with known security vulnerabilities.
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You can install *Thunderbird* as [[additional software|persistent_storage/additional_software]].
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*Thunderbird* is no longer included by default since Tails 7.8 (May 2026).
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Installing *Thunderbird* as additional software
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[[!toc startlevel=2]]
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