How Gumroad Migrated 100M Emails to Resend

Gumroad, a platform for creators to sell digital products, faced a significant challenge when their email provider blocked their account during a busy holiday season, disrupting their communications. This crisis led them to switch to Resend as their primary email service provider. Resend swiftly responded to Gumroad's needs by providing a pricing quote, a dedicated engineering team, and a custom migration plan to ensure seamless email delivery. Key strategies included domain segmentation, managing sending rates, and setting up internal monitoring to maintain high deliverability. Resend's approach emphasized a strong customer service experience, offering a dedicated Slack channel for real-time support and collaboration, which allowed Gumroad to focus on their core business while ensuring effective communication with their audience. Resend's proactive guidance and reliability in handling large-scale email operations have been integral to Gumroad's successful transition, allowing them to maintain their email communication without further disruptions.