Deliverability
12 posts on deliverability for AI agents that send and receive email.
6 August 2026 · 4 min read
Getting DNS records published when you do not control DNS
The technical setup takes ten minutes and the organisational one takes three weeks. Delegation, CNAME flattening, apex limitations, and how to hand records to whoever owns the zone.
5 August 2026 · 4 min read
Getting a damaged sending domain back
Reputation falls fast and returns slowly. How to tell what actually broke, whether to repair or start a new subdomain, and the schedule that gets you back without a second collapse.
4 August 2026 · 4 min read
The requirements Gmail and Yahoo now enforce
Authentication, one-click unsubscribe, and a complaint rate ceiling are now enforced rather than encouraged. What each one means, and why agent mail usually passes without effort.
3 August 2026 · 4 min read
Transactional, marketing, conversational: which one is your agent sending
The three categories have different infrastructure, different rules, and different consequences for mixing them. Where agent mail sits, and why sending it through a campaign tool goes wrong.
2 August 2026 · 5 min read
What DMARC reports are actually telling you
Aggregate reports are ugly XML that answer one useful question: who else sends as your domain. How to read them, what a failure means, and when it is safe to move to reject.
2 August 2026 · 5 min read
Knowing where your agent's mail actually lands
Delivered is not the same as seen. Postmaster tools, seed accounts, and the handful of numbers that tell you placement is slipping before a customer does.
31 July 2026 · 4 min read
Dedicated sending IPs, and why most agents should not want one
A dedicated IP sounds like an upgrade and is a liability below a certain volume. What IP reputation actually does now, when a dedicated one helps, and what to fix instead.
29 July 2026 · 4 min read
Do spam filters catch AI-written email?
Filters do not detect authorship, they detect patterns. What actually triggers them in agent-sent mail, which AI writing habits look like bulk, and how to write so a real message reads as one.
29 July 2026 · 5 min read
Bounces, complaints, and the suppression list your agent cannot argue with
Hard bounces, soft bounces, complaints, and unsubscribes each need a different response. What the platform enforces, what your agent must do with the rest, and why suppression belongs below the model.
26 July 2026 · 6 min read
A warmup plan for a new agent sending domain
A new sending subdomain has no reputation and no reputation is treated as suspicious. Build a week by week ramp, understand which traffic warms fastest, and know when to hold.
26 July 2026 · 6 min read
SPF, DKIM, and DMARC for an agent subdomain, with a generator
Generate the DNS records an agent sending subdomain needs, check a real message's Authentication-Results header, and understand alignment, which is the part that actually fails.
20 July 2026 · 7 min read
Deliverability for agent senders: SPF, DKIM, DMARC, and behaviour
Why agent-sent email lands in spam, how to authenticate a sending subdomain with SPF, DKIM, and DMARC, how to warm it, and which sending behaviours mailbox providers actually punish.