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Windows 10 reached EOS (end of support) on October 14, 2025. If you are on Windows 10, see this article.

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Thunderbird
Accounts

Accounts

Manage your accounts and profiles for Mozilla’s products and services.

In English

Profiles - Where Thunderbird stores your messages and other user data

Export your Thunderbird Profile

Profile Manager - Create and remove Thunderbird profiles

Use multiple profiles in Thunderbird

Unable to use profile when you launch an older version of Thunderbird

Get started with Thunderbird

Getting Started with Thunderbird Pro

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