Industry
15 min read
Almost every email delivery service looks good on a quiet Tuesday. Your application connects, the API returns 202 Accepted, Gmail accepts the message, the dashboard stays green, and the password …
Read post: The email service you forget exists: engineering for tail risk
Industry
14 min read
Email delivery is straightforward when one trusted application sends one predictable stream of transactional messages. It becomes a very different engineering problem when your customers, plugins, or AI agents can …
Read post: Building a safe multi-tenant email delivery pipeline with the MailChannels Email API
Industry
15 min read
Publicly trusted TLS certificates are on a fixed schedule from a maximum lifetime of 398 days down to 200 days, then 100 days, and finally 47 days in March 2029. …
Read post: The 47-day certificate is coming: what hosting providers need to build now
Engineering
3 min read
At MailChannels, we evolve our defenses constantly to stay ahead of email abuse. One of our most effective recent advances, the Dual-Layer Domain and Sender Reputation Policy, has quietly become …
Read post: How MailChannels’ Dual-Layer Reputation Defeats the Account-Rotation Exploit
Industry
7 min read
Most SaaS platforms treat email as a solved problem. Plug in SendGrid or SES, wire up some templates, move on to the next sprint. But for a large and growing …
Read post: The Hidden Tax Every Multi-Tenant SaaS Platform Pays on Email
Industry
5 min read
The dedicated IP has long been the email industry’s most oversold deliverability feature—a relic of an era when mailbox providers relied heavily on IP reputation to sort good mail from …
Read post: Dedicated IPs: Premium Price, Diminishing Returns
Corporate
1 min read
At MailChannels, our mission is to empower safer connections in an open world. We have been committed to supporting internet email as a truly open protocol since 2012. In early …
Read post: Important Update: MailChannels’ Email Sending API for Cloudflare Workers to be Terminated
Post Mortem
9 min read
On April 22, 2024, at 05:30 UTC, our monitoring systems alerted us that SMTP connection times had spiked from the normal sub-1 second to over 7 seconds. This was the …
Read post: MailChannels Service Disruption: All The Gory Details
Industry
2 min read
In February, Google introduced new email delivery requirements for email senders and special requirements for senders who send to more than 5,000 recipients per day. Here is a summary of …
Read post: Gmail’s Changes
Industry
6 min read
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