On 5 March 2012 21:29, Walter Lee Davis <[email protected]> wrote: > > On Mar 5, 2012, at 4:20 PM, Colin Law wrote: > >> On 5 March 2012 21:16, Walter Lee Davis <[email protected]> wrote: >>> >>> On Mar 5, 2012, at 3:54 PM, Marcelo G. Silva wrote: >>> >>>> the problem is that I need to create this type of service, like the >>>> MailChimp. >>> >>> Then you're going to have to solve the same problems they have. >>> >>> The usual way to figure out if someone has opened a mail message is to add >>> a "beacon" image to it. You add a 1x1px image in the body of the e-mail >>> message linked from your server, and use the path to that image to convey a >>> code. <img src="http://example.com/tracker/asdfs78223/pixel.gif"; /> Another >>> spin on this is to add the token to each regular image in your layout. You >>> make up these tokens when you send out the message, so you know that >>> asdfs78223 == [email protected]. >>> >>> Back in Rails, you create a route for this image, and serve the image but >>> also record the request in your database. >> >> And in practice of course it doesn't work very well as a lot of people >> have their mailer set to not automatically show images. In fact I >> think everyone who realises that they /can/ set their mailer up like >> that does, for precisely the reason that we don't want people snooping >> on us. >> >> Colin > > That goes without saying for the class of users who know where the > preferences are and change the from the defaults. I'm certainly in that camp > myself. But the vast majority of people who don't ever change these defaults > do get tracked this way, despite my efforts to educate them.
Is not the default in gmail and thunderbird to not show images? I may be wrong. No doubt the default in Outlook is to show everything under the sun and ignore security issues. Colin -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
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