You want to be very careful there not to cross the line between a gentle suggestion to "Think we did a great job? Or a terrible one? Feel free to review our service" into a "Spammy spammy go spam our places reviewz plz!".I'm not sure if we'd be able to do it as we already send so much email
Has anyone got any tips on getting people to review businesses that are on Google places?
Apart from simply linking to the listing and asking for a review I can't really think of any other ideas ..