Yes, absolutely contact them. Start the conversation with a casual email introducing yourself, thanking them for using your company, and asking if they have an

Yes, absolutely contact them. Start the conversation with a casual email introducing yourself, thanking them for using your company, and asking if they have any questions or feedback on the product or service you provide. It opens up the initial conversation without being pitchy, and would potentially allow you to get an honest critique before asking for a phone call or meeting.