The best email API service for San Francisco tech companies. Enterprise-grade transactional email with AI optimization, 7 SDK languages, and 99.9% delivery rates. Trusted by SF startups and enterprises.
Designed specifically for San Francisco's fast-paced startup ecosystem. Scale from MVP to IPO with our enterprise-grade email infrastructure.
Leverage machine learning to optimize email delivery, open rates, and conversions. Perfect for data-driven SF companies.
Python, Node.js, PHP, Ruby, Java, C#, and Go. Integrate in minutes with the language your SF team already uses.
SOC 2 compliant, GDPR ready, and built for enterprise. Meet the security standards required by SF's top companies.
Industry-leading email deliverability ensures your transactional emails reach inboxes. Critical for SF startups.
Dedicated support team available around the clock. Get help when you need it, no matter your SF timezone.
Free tier with 1,000 emails/month. Perfect for SF startups getting started. Scale as you grow.
Handle millions of emails per month. Trusted by SF's fastest-growing companies and unicorns.
Comprehensive API documentation, SDKs, and developer tools. Built by developers, for SF developers.
GDPR, CCPA, CAN-SPAM compliant. Meet all regulatory requirements for SF-based companies.
Join San Francisco's leading startups using SparkMailr for their email infrastructure.
Start Free TrialNo credit card required. 1,000 emails/month free forever.