Postfix (https://www.postfix.org/) is a fast and secure open source SMTP server for sending unlimited transactional and marketing emails from your own infrastructure. Built-in support for SPF, DKIM, and DMARC ensures optimal deliverability that meets the highest industry standards. With Stackhero (/en-US/), you get a managed Postfix SMTP server running on dedicated, isolated, high-performance infrastructure. Start Postfix SMTP server in 2 minutes. We handle the servers, security, and automatic daily backups, and deliver updates you can apply with one click.

Postfix unlimited transactional emails cloud service

What is Postfix?

Postfix is a fast and secure open source SMTP server for sending unlimited transactional and marketing emails from your own infrastructure. Built-in support for SPF, DKIM, and DMARC ensures optimal deliverability that meets the highest industry standards.

With Stackhero, you get a managed Postfix SMTP server running on dedicated, isolated, high-performance infrastructure. Start Postfix SMTP server in 2 minutes. We handle the servers, security, and automatic daily backups, and deliver updates you can apply with one click.

Stackhero is a cloud platform, ISO 27001 certified and GDPR compliant, that provides hosting for leading open source software in just one click, powered by our own cloud technology and independent from hyperscalers. Easy to use, powerful and transparent: there is no lock-in, no hidden fees, and billing can be stopped in just one click.

Business centric

Discover the Postfix managed cloud solution in just 2 minutes and be ready to go into production instantly.
Focus on your core business, not on your infrastructure.

Highly performant

Powered by super-fast CPUs and NVMe/SSD disks, Postfix is configured to deliver a high-performance solution.
You will be impressed by the speed and reliability of your SMTP server.

Highly secured

Connections are encrypted using the most advanced industry-standard methods, ECDSA and TLS 1.3.
You no longer have to choose between security and speed, you get both.

No artificial limitations

We don't add any soft limitations, like on the number of concurrent connections your Postfix can handle.
You can finally unleash the full power of your Postfix server.

Prepared to deliver

We include the configurations SPF, DKIM and DMARC to maximize your deliverability.
All this with a single click!

Updatable in a click

Updates are provided whenever necessary.
You can stay up-to-date with recent releases and features of Postfix with just a click.

And also...

Billing per hour

Create and delete your Postfix service whenever you want. You will be billed per hour and receive a single monthly invoice containing all the details.

Highly scalable

Choose your configuration, up to 16 vCPUs and 64 GB of RAM and scale it as your business grows.

Secure backups

Your data is automatically backed up every 24 hours to a secured vault, where it is certified and retained for up to 3 months.

Stackhero for Postfix cloud