A transactional SMTP service for your app

Send important transactional emails like password resets, order confirmations, and more with a reliable SMTP service. Avoid the hassle of maintaining your own email infrastructure while ensuring timely delivery of your emails.

Key features of a transactional SMTP service

Sending a few emails a day is generally manageable, even if you’re reaching dozens of people. Services like Google’s Gmail limit email sends to 500 per day, and many shared hosting providers also impose email caps. While this might be fine for personal use, sending hundreds or thousands of transactional emails daily can easily exceed those limits.
For businesses sending bulk emails or transactional messages to large audiences, cloud-based SMTP services provide the necessary scalability. With services like KingSMTP, you can send transactional emails to any number of customers, triggered by their actions on your site, all without managing your own SMTP server. KingSMTP offers seamless setup and integration for your transactional email needs.

Email servers vs. cloud-based SMTP services

While managing your own email server is an option, sending large volumes of emails—whether transactional or promotional—can be technically demanding. Managing email servers at scale can consume valuable developer time and require significant resources to handle email traffic.
Many companies, even those that run their own email servers, often choose to rely on a dedicated SMTP service for transactional emails. The ease, speed, and reliability of using a service like KingSMTP make it an attractive alternative. KingSMTP offers a ready-to-go SMTP relay and a customizable email API for developers seeking more control over email delivery.

Ensuring reliable delivery

Sending emails is only half the battle—ensuring they’re actually received is just as important. Without strong deliverability and tracking mechanisms, it’s difficult to know how many of your emails will bypass spam filters or avoid bouncing. Testing your own servers might help, but it can be time-consuming and may not provide all the insights you need.
A robust email service should not only help you scale your transactional messages but also ensure high deliverability rates. KingSMTP enhances deliverability with domain name authentication and email address validation, reducing bounce rates and preventing spam complaints. For companies requiring the highest delivery success rates, KingSMTP’s managed service provides personalized support and proactive monitoring to optimize performance.

Maximizing the impact of transactional messages

Great email marketing feels personal and relevant. Transactional emails—whether they’re password resets, order confirmations, or account updates—can be a key part of your marketing strategy. Tailored, responsive, and relevant transactional messages can help increase customer engagement.
With KingSMTP, you can take your transactional emails to the next level by conducting A/B tests and analyzing key events like click-throughs. The platform’s real-time analytics, including open and click tracking, allow you to continually optimize the performance and effectiveness of every email you send.