Case Study: Glassdoor achieves 99.5% email delivery and scalable personalized job recommendations with Twilio SendGrid

Glassdoor helps job seekers find jobs they love with twilio sendgrid

Glassdoor, the job-search platform that connects millions of job seekers and employers, needed to quickly and reliably scale its email program as it grew — tripling email volume in the past three years — while delivering highly personalized job recommendations and employer alerts. As volume and complexity increased, maintaining strong deliverability and relevance became a major challenge.

By building on Twilio SendGrid’s Email API and working with SendGrid’s Expert Services, Glassdoor automated personalized alerts and insights for both job seekers and employers and moved from reactive to proactive deliverability management. The solution delivered strong results: a 99.5% average monthly delivery rate, a 0.007% spam complaint rate, and some high-volume campaigns achieving unique open rates above 30%, with continued plans to scale and unify product and marketing sends.

Glassdoor

Teresa Almaraz

Senior Director of Demand Generation & Engagement