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Ruby lib for fetching public Yahoo group data
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yahoo-group-data gem

Yahoo doesn't provide an API to it's publicly available group info, so this gem covers that gap. Use it to find information about a Yahoo group such as name, description and relevant email addresses.


require 'yahoo-group-data'

g ="")

name =
description = g.description
num_members = g.num_members

p = g.post_email
s = g.subscribe_email
u = g.unsubscribe_email
o = g.unsubscribe_email

json = g.to_json

Available instance methods

These should be relatively self-explanatory. Where the data is unnavailable (for instance the group name if no group was found) the return value will be nil

Boolean values:

  • not_found?
  • private?
  • age_restricted?
  • no_data? (true if any of the above are true, othersise false. Here for convenience)

String values

  • name
  • description
  • post_email
  • subscribe_email
  • owner_email
  • unsubscribe_email
  • language
  • category
  • to_json

Other values

  • num_members (Integer)
  • founded (Date)


It's tested with Ruby 1.9.3, it probably works with older versions.


Add this line to your application's Gemfile:

gem 'yahoo-group-data'

And then execute:

$ bundle

Or install it yourself as:

$ gem install yahoo-group-data


  1. Fork it
  2. Create your feature branch (git checkout -b my-new-feature)
  3. Commit your changes (git commit -am 'Added some feature')
  4. Push to the branch (git push origin my-new-feature)
  5. Create new Pull Request

pull requests with tests are more likely to be accepted


Rather than distribute a load of Yahoo's HTML pages with the gem there's a rake task to get the ones that are needed. Run:

$ rake fetch_yahoo_pages

after that:

$ rake test

Because of the dynamic nature of Yahoo groups it's quite possible that the number of members a group has in groups.yml will have diverged with the number of members in reality when you pull down the pages using "rake fetch_yahoo_pages". If you see any of these divergences just update groups.yml appropriately.

If you find a group the gem fails on

Tell me about it, or (in preference) update the gem (Hint: start by adding an entry to the groups.yml file), see contributing instructions above.


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