Postal ships as a Docker-based application with its own SMTP server, web interface and MariaDB/RabbitMQ backend. Running it well requires Docker support, enough RAM for the combined services, a dedicated IP for sending reputation, and Port 25 open for outbound delivery.
With full root access on any of our Linux templates, you install Docker, deploy Postal's containers, and configure DNS (SPF, DKIM, rDNS) for your sending domain without a managed panel restricting the process.
The infrastructure pieces Postal depends on.
Install Docker and Docker Compose to run Postal's container stack exactly as documented.
A sending reputation that belongs to your Postal instance alone.
Outbound delivery works the moment Postal is configured, no relay workaround required.
Faster MariaDB and RabbitMQ performance under Postal's combined workload.
Match your reverse DNS record to your Postal sending domain on request.
Upgrade CPU and RAM as Postal handles more inbound and outbound traffic.
Yes, Postal is distributed as a set of Docker containers; full root access lets you install Docker and deploy it directly.
Standard or Advanced typically suits small to mid-size Postal deployments; Pro is recommended for higher-volume senders.
Yes, for direct outbound delivery; Port 25 is open by default on our VPS plans.
Yes, contact support to configure reverse DNS matching your sending domain.
Docker support, Port 25 access and a dedicated IPv4 — starting at $9.95/month.
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