Business email, explained without the jargon.
Short guides on the parts of business email nobody explains: DNS records, spam placement, and what your options actually cost. No fluff, no whitepapers, just what you’d learn the hard way.
Authentication
SPF, DKIM, and DMARC, explained in plain English
What each record actually does, how the three chain together into real spoofing protection, and how to set all of them up on your domain in under an hour.
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Why your emails are landing in spam (and how to fix it)
The ten causes behind spam placement, from DNS to reputation to engagement, each with a concrete fix, ordered by how often they're the culprit.
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Google Workspace alternatives for small business (honest take)
What Workspace is great at, where it quietly costs you, and how the real alternatives (Microsoft 365, Zoho, Proton, fastmail, self-hosting) compare on price and hassle.
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Authentication
DMARC explained: what the policy actually does
p=none, quarantine, reject — what each policy does to failing mail, how rua reports reveal who sends as you, and a safe rollout to enforcement.
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Reference
The complete guide to email DNS records
SPF, DKIM, MX, DMARC, MTA-STS, TLS-RPT, BIMI — what each record does, what receivers check, and how the whole chain fits together.
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Deliverability
Cold email deliverability: what actually matters
The fundamentals that decide whether cold email lands — authentication, warm domains, volume discipline, list quality — and the myths to ignore.
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Deliverability
Email warmup explained: rebuilding sender reputation safely
Why new and dormant senders start in spam, what warmup actually consists of, and a safe week-by-week ramp with real engagement.
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Infrastructure
Dedicated vs shared sending IPs: an honest guide
When a dedicated IP is worth operating and when a well-managed shared pool is the better engineering choice — no FUD, just trade-offs.
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Email security
What is MTA-STS? SMTP TLS enforcement explained
How the DNS record and HTTPS policy file force TLS for inbound mail, why it stops downgrade attacks, and how to deploy it with TLS-RPT.
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Deliverability
How to get off an email blacklist (DNSBL) step by step
Identify which list matters, fix the actual cause behind the listing, request delisting the right way, and monitor so it never recurs.
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Prefer to just check your domain?
The free email deliverability checker looks up your SPF, DKIM, DMARC, MX, and MTA-STS records and tells you, in plain English, what to fix.