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Me, myself & IT

mailto: protocol handler for GMail



Background Information

The MSDN articles document �

Authenticity and Integrity

GMAIL.CAB is digitally signed using an X.509 certificate issued by WEB.DE TrustCenter E-Mail Certification Authority.
Serial number of the certificate
Fingerprint of the certificate
MD5: e5 0b 01 66 ce 2e 7a 03 f4 98 39 37 f6 f9 9f ba
SHA-1: 79 05 5d 63 2f 03 31 83 04 e2 ff 3b 25 b9 cc b6 70 ad ec 31
Download and install the CA and root X.509 certificates of WEB.DE to validate and verify the digital signature.

Note: due to its counter signature alias timestamp the digital signature remains valid past the X.509 certificates expiration date!


The shortcut icon GMAIL.ICO and the setup script GMAIL.INF are packaged in the (compressed and digitally signed) cabinet file GMAIL.CAB.


The installation requires administrative privileges.

Automatic online installation

If visited with Internet Explorer, this web page will prompt to install (the contents of) the package using Internet Component Download.

Manual offline installation

Download the package GMAIL.CAB and verify its digital signature, then open it in Windows Explorer, extract its contents, right-click the extracted setup script GMAIL.INF to display its context menu and click Install to run the installation.


The setup script supports the update from any previous version: just install the current version!


The deinstallation requires administrative privileges.

On Windows XP and Windows Server 2003 open the Add/Remove Programs applet of the Control Panel, tick the checkbox Updates, select the entry Google Mail underneath Systemkonfiguration and click the Remove button.

On Windows Vista and newer versions of Windows NT open the Control Panel and click the entry View installed updates underneath the Programs and Features or Programs category.
In Installed Updates select the entry Google Mail underneath Systemkonfiguration and click the Uninstall menu entry.


If you miss anything here, have additions, comments, corrections, criticism or questions, want to give feedback, hints or tipps, report broken links, bugs, errors, inaccuracies, omissions, vulnerabilities or weaknesses, …:
don’t hesitate to contact me and feel free to ask, comment, criticise, flame, notify or report!

Use the X.509 certificate to send S/MIME encrypted mail.

Notes: I dislike HTML (and even weirder formats too) in email, I prefer to receive plain text.
I also expect to see a full (real) name as sender, not a nickname!
Emails in weird formats and without a proper sender name are likely to be discarded.
I abhor top posts and expect inline quotes in replies.

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