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Google Apps Hacks
book

Google Apps Hacks

by Philipp Lenssen
April 2008
Intermediate to advanced
384 pages
15h 52m
English
O'Reilly Media, Inc.
Content preview from Google Apps Hacks
125
Why do email clients often hide images in messages, unless you actively approve showing them? One reason
is your privacy and safety; if an image within an email is not sent with the mail but stored on another server,
then that server’s owner might know when you open the email—their web server log is updated each time a
le is retrieved from it, so they can determine when you loaded the picture they sent to you. If they gave the
picture a le name unique to each recipient, they can precisely know who read the email they sent, and when.
This could be potentially abused by a bulk junk mail sender to verify that a recipient email address is indeed
active, which could lead to further junk mail.

If your document’s content is not of a very private nature—the text on Napoleon’s life is not, despite his
affairs!—you can also publish it as a web page. Open your Google Docs document and click Publish.
Check the “Automatically re-publish when changes are made” box and click “Publish document.”
Alternatively, you can also publish the Google Docs document as a blog post . Now you can
compose a new message and manually paste the link of your published page into the mail.
Pros: If you want your document to be truly public, this is the easiest alternative. The recipient of
your document can now easily forward the ...
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Publisher Resources

ISBN: 9780596515881Catalog PageErrata