MailChannels Inbound Filtering vs SpamHero Business Email Security

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.

SpamHero Business Email Security filters incoming email for a domain in the cloud, then forwards clean messages to the customer’s mail server. Its filters cover spam, viruses, and malware, including Microsoft Office macros. A searchable quarantine lets users inspect and recover messages, and three redundant mail servers in separate data centers can queue mail for up to five days when the customer’s mail server is unavailable. SpamHero documents routing Microsoft 365 mail through its service and connects with Microsoft Entra ID to set up valid email addresses; Google Workspace support is also listed. Mail-server communication uses opportunistic TLS, and the service describes enforcing TLS for senders that support MTA-STS. Its REST API uses HTTP Basic authentication and allows 60 requests per minute per key. Support includes 24/7 chat and first-level phone support weekdays from 6am to 6pm Mountain Time. The free trial lasts 30 days and requires no payment information; there is no free plan. Pricing is per domain, with Lite at $5 a month at the introductory annual-prepayment rate.