Gmail API samples
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Mail importer for Gmail
Mail Importer for Gmail is an open-source project from Google
that uploads the contents of a Thunderbird mail archive to
Gmail, doing its best to preserve the read state, flagged state,
and folders of the messages. It is written in Java and uses the
users.messages.import
method.
Clone the GitHub repository to get
the full source code, or browse the
Gmail-related code.
Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 4.0 License, and code samples are licensed under the Apache 2.0 License. For details, see the Google Developers Site Policies. Java is a registered trademark of Oracle and/or its affiliates.
Last updated 2026-09-10 UTC.
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