Mail filtered at the network.
Before it reaches your server.
Inbound and outbound mail runs through our network-level gateway — powered by MailChannels SMTP and Rspamd — so spam is blocked at the edge, not after it loads your server.
Two-layer protection — inbound and outbound.
The mail gateway sits between the internet and your server for all email traffic. Mail is inspected, scored, and filtered before it ever touches your Cloud Cube.
Inbound filtering — Rspamd
All incoming mail is filtered through Rspamd at the network edge. Spam, phishing, and malicious emails are rejected before they queue on your server — protecting both inbox and server resources.
Outbound relay — MailChannels SMTP
Outbound mail routes through MailChannels, a trusted SMTP relay with excellent deliverability. Your emails land in inboxes, not spam folders — and your server IP stays clean.
IP reputation protection
Because outbound mail routes through MailChannels, your server's IP is never exposed as the sender. Your IP reputation stays pristine regardless of what your users send.
Spam that never arrives doesn't consume server resources.
Server-side spam filtering still loads the server. Gateway filtering eliminates the load before it ever arrives.
Server stays lean
Spam blocked at the gateway never touches your server — no processing, no disk writes, no queue buildup.
Better deliverability
MailChannels is whitelisted by major providers. Your outbound mail goes where it's supposed to go.
Clean IP reputation
Your server IP is never used as the outbound mail sender — MailChannels handles that. Your IP stays off blacklists.
Included free
No mail gateway add-on to purchase. Inbound and outbound protection is included with every Cloud Cube plan.
- Fully Managed, server, mail, security
- Dual Remote Backups, PBS + S3
- Daily Snapshots
- Inbound & Outbound Mail Gateway
- 500% SLA Guarantee
- Fully Managed, server, mail, security
- Dual Remote Backups, PBS + S3
- Daily Snapshots
- Inbound & Outbound Mail Gateway
- 500% SLA Guarantee
- Fully Managed, server, mail, security
- Dual Remote Backups, PBS + S3
- Daily Snapshots
- Inbound & Outbound Mail Gateway
- 500% SLA Guarantee
- Fully Managed, server, mail, security
- Dual Remote Backups, PBS + S3
- Daily Snapshots
- Inbound & Outbound Mail Gateway
- 500% SLA Guarantee
- Fully Managed, server, mail, security
- Reserved CPU, no sharing or bursting
- Dual Remote Backups, PBS + S3
- Daily Snapshots
- 500% SLA Guarantee
- Fully Managed, server, mail, security
- Reserved CPU, no sharing or bursting
- Dual Remote Backups, PBS + S3
- Daily Snapshots
- 500% SLA Guarantee
- Fully Managed, server, mail, security
- Reserved CPU, no sharing or bursting
- Dual Remote Backups, PBS + S3
- Daily Snapshots
- 500% SLA Guarantee
- Fully Managed, server, mail, security
- Reserved CPU, no sharing or bursting
- Dual Remote Backups, PBS + S3
- Daily Snapshots
- 500% SLA Guarantee
Mail gateway included on every Cloud Cube.
MailChannels SMTP + Rspamd filtering — inbound and outbound — free on every plan.