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Deliverability, in plain English.
How cold email actually lands in the inbox — authentication, warmup, reputation, and the APIs that send it. No fluff, no growth-hacking myths.
23 articles
Cold Email Metrics That Matter: Beyond Open Rates in 2026
Open rates are dead in 2026. Here's what to track instead: reply rates, positive replies, meetings booked, and deliverability KPIs — with benchmarks and tools.
2026-10-20 · 6 min read
Inbox Placement Testing: How to Know if Your Cold Emails Land in the Primary Inbox
Inbox placement testing shows whether your cold emails reach the primary inbox, Promotions, or spam — how seed tests work, which tools to use, and how to fix placement.
2026-10-16 · 6 min read
The Cold Email Deliverability Checklist: 7 Steps to Land in the Inbox (Not Spam)
A ranked cold email deliverability checklist for 2026: authentication, list cleaning, warmup, reputation, content, unsubscribe, inbox placement.
2026-10-14 · 11 min read
Navigating Google & Yahoo's New Email Sender Requirements for Cold Outreach
Google and Yahoo's email sender requirements still shape cold email in 2026. Here's what SPF, DKIM, DMARC, one-click unsubscribe and the 0.3% rule mean.
2026-10-13 · 10 min read
BIMI for Cold Email: Display Your Brand Logo and Boost Trust in 2026
BIMI record setup for cold email in 2026: the DNS record, the DMARC prerequisites, whether you need a VMC, and how to measure the logo's real impact.
2026-10-12 · 8 min read
Email List Cleaning: Your 2026 Guide to a Healthier Sender Reputation
Email list cleaning in 2026: verify before you send, suppress bounces and spam traps on every send, and protect your sender reputation.
2026-10-09 · 9 min read
Email Bounce Rate: The 2026 Guide to Keeping Your Cold Outreach Out of Trouble
Email bounce rate in 2026: what counts as good, how Gmail and Outlook enforce it, and how cold email teams cut bounces without killing reply rates.
2026-10-07 · 11 min read
Email Sender Reputation: The 2026 Playbook for Landing in the Inbox
Email sender reputation in 2026: how Google, Yahoo and Microsoft judge your sending, and the steps that actually move your sender score.
2026-10-05 · 10 min read
Email Warmup Strategies: How to Land in the Inbox, Not Spam (2026 Edition)
Email warmup strategy 2026: how long new domains really need, manual vs automated warmup, sender reputation, and a checklist to stay out of spam.
2026-09-28 · 8 min read
The Ultimate 2026 Guide to Cold Email Deliverability: Avoiding Spam Traps and Blacklists
Cold email deliverability in 2026: why emails hit spam, spam traps, blacklist removal, Google/Yahoo rules, and a step-by-step checklist to protect sender reputation.
2026-09-28 · 8 min read
Mastering SPF, DKIM, and DMARC for Cold Email Deliverability in 2026
Learn how to set up SPF, DKIM, and DMARC for cold email in 2026. Avoid spam folders with our practical, step-by-step authentication guide for deliverability.
2026-09-28 · 4 min read
Why your cold emails go to spam (and how to fix it)
Spam placement is rarely about one bad word. It is authentication, reputation, warmup, and hygiene — in that order. Here is how to diagnose it.
2026-06-26 · 6 min read
SPF, DKIM, and DMARC: the setup that lands in the inbox
SPF says who can send, DKIM proves nothing was tampered with, DMARC ties them together and tells receivers what to do. Here is the whole picture.
2026-06-24 · 7 min read
How to send cold email programmatically with an API
You can send transactional email from your app in five minutes — but try cold outbound and you will get banned. Here is the layer built for it.
2026-06-20 · 6 min read
Cold email via MCP: let your AI agent send outbound
AI agents can write the pitch. The missing piece is letting them send it — safely, through warmed infrastructure. That is what an MCP deliverability server is for.
2026-06-16 · 5 min read
Email warmup explained: ramping a new sending domain
A new domain has zero reputation. Warmup builds it gradually so receivers learn to trust you — before you send a single real campaign.
2026-06-12 · 5 min read
Cold email deliverability checklist for 2026
One checklist, four layers: authentication, warmup, reputation, suppression. Skip any one of them and the others cannot save you. Here is the full setup.
2026-06-10 · 8 min read
How sender-reputation scoring actually works
Reputation is not a single number. It is a bundle of signals a mailbox provider watches per domain and per IP — and crossing one threshold can silently move you to spam.
2026-06-08 · 7 min read
GDPR and cold email: what's actually allowed
GDPR does not ban cold email outright, and it is not a US-only concern either. Here is what the regulation actually asks of B2B outbound — and what it does not permit.
2026-06-06 · 7 min read
Per-send vs per-seat pricing for cold-email tools
Per-seat pricing punishes you for adding a teammate. Per-send pricing punishes you for sending more. Neither is universally better — it depends on how your usage actually shapes up.
2026-06-04 · 6 min read
What is a warmed sender pool?
A single warmed domain solves one problem. A managed pool of them solves the recurring one: never running a real campaign on a domain that has not earned trust yet.
2026-06-02 · 6 min read
MCP servers for cold email: what they actually do
MCP is not magic — it is a standard way to hand an AI agent a defined set of tools. For cold email specifically, that raises one obvious question: which tools should an agent actually be trusted with?
2026-05-30 · 6 min read
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