MailChannels Inbound Filtering vs MX Guarddog

MailChannels Inbound Filtering blocks spam, phishing, and malware before they reach hosted inboxes. It is designed for hosting providers that handle mail at scale, with a multi-tenant setup: one MX record can protect domains across a provider’s fleet, while controls remain available for individual domains. Multiple independent detection engines identify threats, and the product says it enforces SSL/TLS, SPF, DKIM, and DMARC inline, preventing mail that fails authentication from reaching customers. Customers can manage safelists, blocklists, and false-positive recovery. Intelligent Quarantine offers senders a self-service release link, and a daily digest lets users release legitimate held messages with one click. Log Search enables customers and support agents to find messages in mail history. The service supports downstream SMTP mail servers and has a cPanel and WHM plugin; the plugin requires cPanel and WHM version 68 or higher and PHP 5.6 or higher. Setup includes domain provisioning, mail-server preparation, and routing inbound traffic through MailChannels. Pricing is on request. The product page advertises a 30-minute human response, 24/7, from engineers.

MX Guarddog is a hosted email gateway for standard SMTP servers serving owned domains. It scans incoming messages for spam, phishing, malware and viruses, quarantines offending mail, and forwards clean messages to the customer’s server. The service runs in the cloud, so it requires no hardware or software installation and no configuration changes to email clients or the server. Quarantine reports summarize stopped spam, and users can adjust report preferences; quarantine retention is seven days. If a customer’s server is unavailable, MX Guarddog says it holds mail for up to 168 hours and delivers it when the server returns. It can sync active addresses from Windows AD, LDAP or cPanel, and says it uses Transport Layer Security, including Perfect Forward Security, for email in transit. The listed per-address price is $0.25 per month; aliases are not charged. A free plan and 30-day trial are listed. The service is for web use and does not support consumer Gmail or Hotmail accounts.