Facilitating deal comparison and advertising in association with emails

A system comprising:

• one or more server computers coupled to a network;
• and
• one or more databases coupled to the one or more server computers;
• wherein the one or more server computers are for:
• detecting if an email addressed to a user comprises deal information related to one or more deals;
• extracting the deal information if the email is detected to comprise deal information;
• displaying a link in the email when the user opens the email;
• and
• the link being configured such that, upon the user clicking the link, a search query comprising the extracted deal information is transmitted to a deal service, and the user's browser application is directed to the deal service.

A computer readable medium or media containing instructions for executing a method comprising:

• using one or more computers, detecting if an email addressed to a user comprises deal information related to one or more deals;
• using one or more computers, flagging the email if the email is detected to comprise deal information;
• using one or more computers, extracting the deal information from the email when the email is received by the user's inbox if the email is detected to comprise deal information;
• using one or more computers, overlaying a link on top of the email when the user opens the email;
• and
• the link being configured such that, upon the user clicking the link, a search query comprising the extracted deal information is transmitted to a deal service, and the user's browser application is directed to the deal service.