SMTPGrid

What is SMTPGrid?

SMTPGrid is built for SaaS companies, ESPs, agencies, marketing teams, and enterprises sending high-volume emails. It intelligently routes traffic based on ISP, provider performance, and custom rules to improve deliverability and sender reputation. Features include automatic failover, mailbox warm-up, dedicated IPs, suppression management, bounce handling, webhooks, IP whitelisting, and real-time analytics.