Group Message Service AND email service

Concerning Yahoo Groups
It would be great if the functions:
1.check_auth
verify auth|boolean
2. get_auth_token
frob|string
3. get_group_messages
type*start |strings [type=individualORtitle] [start=distant from most recent]
4.get_message_stream
root message index |string
5.get_individual_message
message index|string
6. add_message
titleANDsubjectANDcontent |strings
7. reply_message
message indexANDcontent |strings
8. delete_message
message index|string
9. signout
nsid|string

existed in a service "YgroupsAccessor", allowing a user to: check if they have the authority to be in a certain group, get an authorization token, list a certain number of messages, add a message, reply to a message, and delete a message.

yahoo groups does not have an API so it may be impossible to create but I thought what better place to ask.

BUT,
yahoo mail does have an API,
since the FlickrUploader service accesses the Flickr API, I can not imagine it difficult to replicate the code to fit for Mail API. Mail is yahoo's biggest service, it would be great for developers to have these functions in a service that they could use so easily. These are the functions I think the service should have.
1.check_auth
verify auth|boolean
2. get_auth_token
frob|string
3. get _folders
no parameters- returns folders with an index
4. get_mail_messages_from_folder
folder indexANDstart|string default:inbox
4. compose_mail
sendersANDreceiversANDtitleANDsubjectANDbody |string
5. reply_mail
mail indexANDbody |string
6. delete_mail
mail index |string
7. signout
nsid|string

I did this sloppy but if flickr can be accessed so can other API's though it would be great if groups could
Please help me develop these
I imagine if I manipulate the FlickrUploader code to fit for Mail, using the Ruby installation I could do it.

As for groups, that is probably beyond browserplus to assists for the API does not exists but it never hurts to ask right?