The email service you forget exists: engineering for tail risk
·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 …
Building a safe multi-tenant email delivery pipeline with the MailChannels Email API
·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 …
The 47-day certificate is coming: what hosting providers need to build now
·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. …
When Direct Connect goes dark: how our edge network rode out the July 24 AWS us-west-2 outage
·8 min read
On July 24, 2026, between 10:55 and 12:12 UTC (3:55 to 5:12 AM Pacific), AWS experienced a networking failure in its us-west-2 (Oregon) region that broke routing between the region …
Multi-tenant email sending is the operation of sending email for multiple independent customers, users, workspaces, or software agents through a common platform. Because the platform does not fully control every …
A multi-tenant SaaS platform has a different email problem from an organization that sends only its own messages. The platform must govern customers, users, workflows, or agents whose behaviour it …
Cloudflare and Stripe Have an Abuse Problem. The Email Industry Should Be Paying Attention.
·6 min read
Last month, Cloudflare and Stripe announced something new. They built a way for AI agents to set up internet services on their own. An agent can now register a domain, …
Why Email Is the Most Dangerous Output Channel for AI Agents
·6 min read
There is a version of this post that chases a news cycle. This is not that version. Instead, this is for the developers and platform engineers who are building systems …
The Hidden Tax Every Multi-Tenant SaaS Platform Pays on Email
·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 …
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 …