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One-Click MTA Provisioning

Provision production-ready mail transfer agents directly from the UI. Select a region, click provision, and a fully configured Postfix relay is ready to send in under 5 minutes.

Automated Setup

Creates a Linode Nanode running Debian 12 with Postfix configured for outbound-only relay, SASL auth on port 587, and STARTTLS with Let's Encrypt certificates.

Security Hardened

UFW firewall (ports 22 and 587 only), Fail2ban SSH jail, disabled password auth, unattended security upgrades, and internal Received header stripping.

DNS Automation

Automatically creates Cloudflare A records, sets rDNS on Linode, and updates the SPF TXT record with all active MTA IPs. Hostname auto-assigned as mta-N.yourdomain.

Ready to Connect

Provisioned servers are automatically registered in the Blanketcat API with SASL credentials. Connect on port 587 with STARTTLS and start sending immediately.

Domain & DNS Management

Full lifecycle domain management with integrated DNS tooling and Cloudflare automation.

Domain Lifecycle

Add domains with return path configuration and optional blog hostname. View required DNS records (SPF, DKIM, DMARC, bounce), trigger verification, and assign mail servers.

Cloudflare Integration

Store your Cloudflare API token and push all required DNS records — SPF, DKIM, DMARC, MX, CNAME — with a single click. Automatic zone detection by walking up domain labels.

Blog DNS

Set a blog hostname per domain. Check whether CNAME or A records resolve correctly with visual status indicators. Preview your blog before DNS propagates.

Verification

Trigger domain verification from the UI. Automatic verification after Cloudflare DNS setup. Detailed error reporting for failed DNS operations.

SMTP Mail Servers

Configure and manage your SMTP infrastructure with full control over connection details, TLS, authentication, and failover routing.

What Gets Provisioned

Every provisioned MTA is a complete, production-ready mail relay. Here's exactly what's set up automatically.

Linode Nanode

$5/month Debian 12 instance in your chosen region. Lightweight, cost-effective, and purpose-built for outbound email relay.

Postfix Configuration

Outbound-only relay with SASL authentication on port 587 and STARTTLS encryption using automatically provisioned Let's Encrypt certificates.

Network Security

UFW firewall restricting inbound to ports 22 (SSH) and 587 (SMTP). Fail2ban monitoring SSH. Password authentication disabled.

DNS Records

Cloudflare A record mapping hostname to IP. Linode rDNS set for reverse lookup. SPF TXT record updated with all active MTA IPs.

API Access

Every infrastructure component is accessible through the Blanketcat API with scoped API keys. Manage servers, domains, DNS, and mail infrastructure programmatically.

Scoped API Keys

Granular permissions: subscribers, lists, segments, emails, senders, domains, campaigns, journeys, events, suppression, webhooks, articles. Read, write, or admin scopes per resource.

MTA Provisioning API

Create, list, get, and delete servers via REST API. Bearer token authentication. Automatic SASL credential generation and DNS configuration.

Warmup API

Add, edit, and remove warmup domains via REST API. Rate limited to 30 requests per minute. MX record validation on all mutations.

Build your email infrastructure
with Blanketcat.

Provision, configure, and manage — all from one platform.

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