Downloading attachment from gmail

Hi folks,

I am wondering if it is really possible via some R code which shall do
the following

1. Login to a Gmail account (account name and password will be provided to R)
2. Search for all mails which has a word "ABCD" in the mail body
3. Download all the attachments (if available) which will hit the criteria #2


Am not sure if above is too ambitious, however will really appreciate
if R can do this.

Thanks for your time