Email Is Not the Universal Agent Protocol: What I Found Testing It
Email Is Not the Universal Agent Protocol: What I Found Testing My Email System An honest postmortem. What Started This This morning my email system b…
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How to Check SPF, DKIM, and DMARC Records in Python
If your app sends email — transactional or marketing — three DNS records decide whether it lands in the inbox or the spam folder: SPF , DKIM , and DMA…
Build a support triage agent that owns its own inbox
Most "AI support bot" demos bolt an LLM onto a shared Gmail or hang a webhook off a helpdesk and call it a day. That works right up until you want the…
Give your AI agent its own inbox so it can sign itself up
Most "AI email" demos point a model at a human's mailbox over OAuth. You connect your Gmail, the agent reads your threads, drafts replies, maybe sends…
Make your email agent idempotent against duplicate webhooks
Most posts about "AI email agents" stop at the happy path: webhook fires, model drafts a reply, agent sends it. Demo works, screenshot looks great, sh…
Summarize long email threads for agent context
Most "AI email" demos hand the model the whole inbox and hope for the best. That works in a screenshot. It falls apart the first time a real conversat…
Lint your React Email templates in CI (before Gmail strips half your CSS)
Your email looks perfect in the React Email preview. Then Gmail strips half the CSS, and Outlook on Windows renders it with Word's engine from 2007. N…
Как один баг в sendmail создал эру спама и привёл к SPF, DKIM и DMARC
Когда в мае 1978 года Гэри Туерк, маркетолог из Digital Equipment Corporation, отправил 400 сотрудникам ARPANET приглашение на презентацию компьютеров…
Build a calendar conflict-resolution agent with Nylas
Booking races create conflicts nobody notices until two people show up for the same slot. Two requests land within a few seconds of each other, both p…
Superhuman’s new auto-draft feature almost makes me like AI replies
Superhuman’s latest AI email drafting feature is its most convincing yet, generating replies that often required little to no editing in our testing.
Self-hosting your email? SPF, DKIM and DMARC decide your inbox rate
I moved outbound email for a couple of side projects off a hosted ESP last year, mostly to stop paying per-seat for what is basically a solved problem…
Spin up ephemeral test inboxes for email integration tests
Most teams test email by not testing it. The send path gets a mock — expect(transport.send).toHaveBeenCalledWith(...) — and everyone agrees that's "go…
SMTP outbound as a first-class citizen: send emails without pip install yagmail
Notifications, password resets, magic links, alerts. Every language solves SMTP outbound with an external library. In Fitz, smtp.send(opts) is a langu…
A/B test email subject lines with an agent — no ESP required
Subject-line A/B testing is the kind of thing you usually rent. You sign up for an ESP, drop your contacts into their list, pick "split test" from a d…
Run a legal intake agent on its own mailbox
Law-firm intake is one of those problems that looks like a chatbot and isn't. A prospective client emails [email protected] describing a dispute, an…
Triage tenant maintenance requests with a property-management agent
Most "AI for property management" pitches start with a model that reads a leasing manager's inbox and "helps them keep up." That's fine until you real…
97.8% of the top 10,000 domains have no MTA-STS. Here's how to be in the other 2%
Of the 10,000 most-visited domains on the web, 97.8% have no MTA-STS policy at all. Not misconfigured. Not weak. Just absent. I scanned the Tranco top…
Onboard new hires with an HR email agent
New-hire onboarding is a checklist. Send a welcome email on day one. Send the benefits-enrollment form. Get the signed I-9 back. Get the direct-deposi…
Let your agent RSVP to invites it receives
An agent that gets invited to meetings should respond like a real attendee. Not with a polite "I'm an AI assistant, please contact my human" auto-repl…
Add email signatures with the Nylas Signatures API
Here's a thing that surprises people the first time: an email sent through the API does not carry the signature the user set up in Gmail or Outlook. P…
Send templated email with the Nylas Templates API
Every app sends the same handful of emails over and over: the welcome message, the password reset, the follow-up, the receipt. The lazy way is to buil…
Sync a mailbox into your own database with Nylas
You want your app to have its own copy of a user's email: to search it fast, run analytics over it, or feed it to a model without hitting the provider…
The 2026 Self-Hoster's Privacy Stack: every tool I actually pay for, configured end-to-end
Originally published on byte-guard.net . TL;DR: A working privacy stack in 2026 is not a single tool. It's seven decisions made in the right order. Mi…
Give your AI agent its own inbox: Nylas Agent Accounts via API and CLI
Most "AI email" demos point a model at a human's inbox over OAuth. That's fine until you want the agent to be a participant — to have its own address …
Stop Hand-Coding HTML Emails: JSX Templates, Multi-Provider Sending, One TypeScript Library
I shipped a SaaS that sent six transactional emails: welcome, password reset, verification, invoice, payment failed, team invite. Every one was a hand…
Common Pitfalls Building Email Agents (and Fixes)
A team ships their first email agent on a Thursday. Demo went great, handler's deployed, webhook's registered. Friday morning the on-call wakes up to …
Idempotency Lessons From an Email Agent
A customer emails your support agent at 9:14 a.m. At 9:15 they get a helpful reply. At 9:16 they get the same reply again, word for word. Nothing cras…
The CLI-First Way to Manage Agent Accounts
There's a specific kind of friction in provisioning infrastructure through a web UI: you're building an automated system, but step one is clicking thr…
CRM Enrichment From an Agent-Owned Inbox
The best contact-enrichment vendor you'll ever use is the bottom three lines of the emails already sitting in your inbox. Roughly 82% of business emai…
Monitor a Support Inbox and Open Tickets Automatically
Before: a customer emails "production is down" at 11pm, the message sits unread until someone opens the shared inbox at 8am, gets forwarded to the wro…