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1&1 MailCheck version history - 5 versions

1&1 MailCheck by 1&1 Mail & Media GmbH

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1&1 MailCheck version history - 5 versions

  • Be careful with old versions! These versions are displayed for testing and reference purposes.You should always use the latest version of an add-on.

  • Latest version

    Version 6.5.5

    Released 20 Nov 2023 - 2.35 MB
    Works with firefox 42.0 and later

    Source code released under Custom Licence

    You'll need Firefox to use this extension
    Download Firefox and get the extension
    Download file

  • Older versions

    Version 6.5.4

    Released 6 Nov 2023 - 2.35 MB
    Works with firefox 42.0 and later

    Source code released under Custom Licence

    Download file

  • Version 6.4.0

    Released 17 Aug 2023 - 2.34 MB
    Works with firefox 42.0 and later

    Source code released under Custom Licence

    Download file

  • Version 6.2.3

    Released 3 Apr 2023 - 2.3 MB
    Works with firefox 42.0 and later

    Source code released under Custom Licence

    Download file

  • Version 6.2.2

    Released 7 Feb 2023 - 2.3 MB
    Works with firefox 42.0 and later

    Source code released under Custom Licence

    Download file