Latest news, tutorials, and insights about email automation, AI agents, and developer tools.
Email-based sign-in (magic links) feels simple for users, but it is one of the easiest E2E tests to make flaky. You are coordinating multiple syst...
Jason Macdown
11 min read
Email verification is one of the most security-critical parts of an app, and also one of the flakiest parts of automated testing. OTP emails arriv...
Jason Macdown
9 min read
When you move email-dependent automation from “one shared mailbox” to “inbound email as an API,” the first architectural decision is almost always...
Jason Macdown
10 min read
Parallel CI is great at finding real bugs, and brutal at exposing unreliable test infrastructure. Email tests are often the first to fall apart: o...
Jason Macdown
10 min read
Security emails are some of the highest-risk inputs you can feed into an LLM pipeline, because they contain exactly the artifacts an agent wants t...
Jason Macdown
11 min read
If you are setting up a test email domain (or subdomain) for CI, QA automation, or LLM agents, it is easy to over-invest in “email authenticatio...
Jason Macdown
10 min read
Email verification sounds simple until you try to automate it: trigger an email, wait, click a link or submit an OTP, then assert the user is veri...
Jason Macdown
10 min read
If your automation needs email, you have two very different options: open an email account (a traditional mailbox with a login) or use an API i...
Jason Macdown
10 min read
Developers search for “email sign up free” for two very different reasons: You need a free address to sign up for tools, trials, and SaaS ac...
Jason Macdown
9 min read
Email is one of the last “human-shaped” integration surfaces that agents still have to touch. Sign-up links, OTPs, magic links, invoices, support ...
Jason Macdown
9 min read
In 2026, “email management” for automation is less about organizing a human mailbox and more about controlling an inbox lifecycle : create an iso...
Jason Macdown
10 min read
Email is an odd “notification bus” for software agents. On the one hand, it is ubiquitous: password resets, magic links, invoices, alerts, invit...
Jason Macdown
11 min read
Inbound email is one of the easiest ways to accidentally give an LLM too much power. A real mailbox contains everything you do not want an auton...
Jason Macdown
9 min read
If you are trying to personalize an email address for sign-ups, verification codes, or agent-driven workflows, you usually mean one of two thing...
Jason Macdown
9 min read
When you “customise email address” formats for QA, signup verification, or LLM-agent driven test flows, the temptation is to keep appending tags u...
Jason Macdown
9 min read
Deterministic email receipt is harder than it sounds. In CI, QA automation, and LLM agent workflows, “wait for the email” is often the flakiest st...
Jason Macdown
9 min read
Email automation breaks in boring, expensive ways: the “wrong” test run consumes the email, a staging flow picks up production mail, or your LLM a...
Jason Macdown
10 min read
If you’ve ever searched for a temp domain email to unblock a test, verify a signup, or feed an LLM agent a one-time code, you’ve probably landed...
Jason Macdown
10 min read
Email automation breaks in surprisingly mundane ways, and your choice of email domain names is one of the biggest hidden levers. Pick the wrong ...
Jason Macdown
9 min read
Email is still the most common “out-of-band” channel in modern product flows: sign-up verification, OTP codes, password resets, invite links, SSO ...
Jason Macdown
12 min read