Get labels from gmail all mail

I am a researcher and my in my current research I check the use of labels in Gmail. The participants in the experiment sees the last 100 messages in their all mail view in Gmail and I would like a script maybe greasmonkey script that does the following: for each one of the 100 messages: if the from message is me - ignore the message else if the message is a chat - ignore the message otherwise: get the list of labels in this message. The list can be an empty one - i.e. for messages in archive contain the inbox word - i.e. for messages only in inbox contain a label or number of labels or contain inbox + label Thanks ## Deliverables Please help me - I guess if i would familiar with greasmonkey I could have done that myself