Case Study: Glassdoor achieves reliable, large-scale personalized email delivery with Twilio SendGrid

Glassdoor Helps Job Seekers Find Jobs They Love with Twilio SendGrid

Glassdoor, the job-search platform that pairs millions of company reviews and insights with the latest openings, needed to rapidly and reliably scale its email program to reach more job seekers with highly personalized recommendations. As volume grew and deliverability complexity increased, the team sought a solution that could maintain inbox placement and support tailored job alerts and employer communications at scale.

By partnering with Twilio SendGrid and using the Email API plus Expert Services, Glassdoor built a data-driven, personalized email experience and made deliverability proactive rather than reactive. The program tripled in volume over three years while maintaining a 99.5% average monthly delivery rate, a 0.007% spam rate, and unique open rates north of 30% for some sends—giving Glassdoor the confidence to continue scaling and to consolidate product and marketing sends through the same pipeline.

Glassdoor

Nonso Maduka

Director of Product Management