Best High-Volume Email Services for Transactional and Marketing Email in 2026
For a B2B SaaS sending 200,000+ emails per month – password resets, alerts, onboarding flows, newsletters – every message carries revenue and user trust. A 2% drop in inbox placement means 4,000 emails land in spam, including critical account notifications. At this scale, email isn’t a marketing channel; it’s infrastructure. The best high-volume email services…