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Brian Sullivan wrote:
> I am looking for a strategy or samples (or even just a hint as to the
> best process) to create an email opt-in strategy in Zope. I am
> thinking that what you do is use some sort of hash or unique id
> creation mechanism (based on the email address, time or something
> else).
> 
> Based on what I am seeing -- some sort of MD5(not totally sure what
> that means but I understand there are Python supplied functions to
> generate it) hash of a combination of the email address and date/time
> stored and then sent to the user should guarantee that it is unique,
> can't be auto generated by some bot and should allow verification on
> http access using the hash in the url?
> 
> All the potential solutions I am seeing use Python 2.5 + -- the
> version of Zope I am using is based on Python 2.4.4.
> 
> Anybody have any ideas or have implemented something like this?

As an example look at the Products.EasyNewsletter code.
In a recent project we implemented as similar functionality where we
generated 32 char longs strings (based on random numbers) and stored
the token in an external DB (MongoDB). Sending out a confirmation email
and implementing a view for validating the token through an URL
is straight forward.

- -aj
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