Dependable SMTP Email Relay
SMTP.com has been a leader in email relay services for over 20 years. Start sending emails in minutes with our easy integration process and benefit from years of experience in getting emails delivered into inboxes.
Flexible and scalable email sending service built for businesses and developers.
SMTP maintains impeccable reputation among mailbox providers by proactively vetting out spam.
Our dedicated servers have the highest uptime rates in the industry ensuring your emails reach their recipients without delay.
SMTP supports all leading authentication standards including DKIM, SPF, and DMARC, aside from standard encryption.
Meet the SMTP Reputation Defender.
Reputation Defender is SMTP’s proprietary technology that uses big data to proactively monitor your email list health and safeguard your domain and IP reputation among ISPs by suppressing bad emails in your sends from hard and soft bounces. This ensures your delivery rates and inbox placement incrementally gets better over time
Powerful SMTP API for Developers
Built for easy implementation
Easy and straightforward SMTP integration provided by a simple web API on RESTful architecture.
SMTP’s API is built with agility in mind, allowing you to scale your sending and adapt your API to your specific needs.
Powerful reporting and tracking
Easily access comprehensive reports on your transactional and marketing email opens, bounces, click-through rates and more.
SMTP for Marketers
Marketing emails are different from transactional emails where your subscribers aren’t actively waiting for an email from you. Delivering your marketing emails to the inbox is hence critical.
Seamless integration with automation platforms.
Get experts to set up your mail sending infrastructure.
Switch tools without hurting your IP reputation.