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Integration

Wiring an application, a workflow or an agent to a relay without wrecking the domain it sends as.

Three signal beams converging; two meet the target, the third misses below it.

Magic link and OTP emails: what makes them arrive in seconds, and what makes them late

A login code that arrives in ninety seconds has failed, even though it was delivered. Latency in transactional email comes from a handful of specific places, most of them in your own stack, and each one is measurable. Where the seconds go, how to design the message so security scanners do not consume the link, and what to measure.

A node graph where a single node emits an amber beam.

SMTP port 25 vs 465 vs 587: which one to use, and why the answer is almost always 587

Three ports, three different jobs, and one that most applications should never touch. What each port was designed for, what the standards say now, why hosting providers block 25, and how to configure a mailer so it fails safely rather than falling back to plaintext.

A node graph where a single node emits an amber beam.

Sending email from an n8n workflow without wrecking your domain

Automation platforms make it trivial to send mail and equally trivial to send it from an unauthenticated host at three in the morning. What to configure, and what to check afterwards.