Customer Success: SendGrid Becomes the Mayor of foursquare Carly Brantz February 22, 2012 Best Practices // SUMMARIES ?> If you’re familiar with location based services, then you are most certainly aware of foursquare – the mobile platform that makes cities easier to use and more interesting to explore. At SendGrid we are caught up in the craze and quite competitive internally for our foursquare points and mayorships. While most communication between foursquare users happens within the application, email alerts, friend requests, check ins, and “mayorship” status result in over 60 million transactional emails sent per month. Sending such a large volume of mail every day led to complex email deliverability problems for which they lacked the internal expertise, time and resources to properly manage the flow of email. Over time, they started to receive email complaints from their users which negatively affected their sending reputation and created additional problems with the ISPs. With 84 million users worldwide and growing, Foursquare needed a reliable and scalable email infrastructure that could handle the rapid growth of their database and get them back on track with the ISPs. foursquare chose SendGrid to help them better manage their email and implement best practices to improve and maintain high email delivery. The result was a 96% delivery rate and thousands of saved dollars in engineering resources. Read the entire case study and see what Jon Hoffman, Head of Infrastructure at foursquare had to say about the switch to SendGrid.