Redmine

This plugin allows you to keep your Redmine users synced to Mailchimp! The first version allows you to select opt-in options. When a user is created or updated, the user is subscribed to your Mailchimp list. I have tested this plugin with 2.6.1 and 2.5.2, but I suspect it is compatible with older versions.

This plugin allows you to keep your Redmine users synced to Mailchimp.

• Clone into redmine/plugins directory
• bundle install

Then, enter an API Key on the plugin settings page (Admin -> Plugins -> Configure).
Find your API key: http://kb.mailchimp.com/accounts/management/about-api-keys#Find-or-Generate-Your-API-Key

• Double Opt-in: flag to control whether a double opt-in confirmation message is sent, defaults to true. Abusing this may cause your account to be suspended.
• Update Existing: flag to control whether existing subscribers should be updated instead of throwing an error, defaults to true.
• Replace Interests: flag to determine whether we replace the interest groups with the groups provided or we add the provided groups to the member's interest groups (optional, defaults to true). Not currently used--it has no effect.
• Send Welcome Email: if your double_optin is false and this is true, we will send your lists Welcome Email if this subscribe succeeds - this will not fire if we end up updating an existing subscriber. If double_optin is true, this has no effect. defaults to false.