Custom Email-based Tracking Script/Pixel

Hello. We need someone to create a tracking pixel that is intended for use in email marketing. This pixel will be used in email service providers, such as Mailchimp, Sendgrid, Mailgun, and Campaigner. Important: Email clients render have CSS and HTML limitations (such as no Javascript), so you must be aware of the limitations of coding for email. I would like the pixel to track: Device Geolocation Read time (or how long the pixel is loaded, before being closed) Email Client Opens Email Address of Opens Recipient Domain I have a custom admin dashboard, which should display the analytics/data from the pixel. Please note: The pixel will be used in many different campaigns, so I need the ability to generate unique tracking codes to be inserted in different campaigns. I look forward to discussing this further.