MailChannels

MailChannels provides transactional email delivery and outbound filtering for platforms with many separate senders, such as hosting companies, SaaS apps and AI-agent businesses. Mail goes out by SMTP relay or API, and abuse is contained so that one compromised customer does not damage delivery for the rest. The firm built its experience in web hosting, where email abuse is hard to manage.

What MailChannels offers

• SMTP relay and API — Delivery of customer email without needing in-house deliverability expertise.
• Spam, virus and phishing protection — Spam bursts and phishing are identified before mail leaves the network.
• Per-sender reputation controls — Behaviour is tracked for each individual sender rather than only per account.
• Automated abuse response — Compromised accounts trigger webhook-driven rate limits, suspensions or alerts.
• Phishing detection API — An API to detect outgoing phishing campaigns before they hurt deliverability.

Who it works with

Hosting providers, SaaS platforms and multi-tenant apps. The firm reports use by 25% of the 100 largest hosting providers.

Key facts

• Focus: Platforms with many senders
• Delivery routes: SMTP relay and API