Deliverability & DNS
SPF, DKIM, DMARC setup guides, DNS record configuration, inbox placement troubleshooting, and deliverability monitoring for self-hosted email.
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Cheap Custom Email Domain: The 4-Way Cost Breakdown
Break down the true cost of a cheap custom email domain across registrar fees, DNS, mailbox hosting, renewals, and migration risk.
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Alexey Bulygin
Custom Business Email Domain: Setup Paths That Don't Lock You In
Set up a custom business email domain in a way that avoids lock-in, protects deliverability, and keeps future migration simple.
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Alexey Bulygin
Business Domain Email Address: What's Allowed, What's Not
Learn what makes a business domain email address valid, trusted, and deliverable under modern SPF, DKIM, DMARC, and sender rules.
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Alexey Bulygin
Personalised Email Domain: Naming, Aliases, and Brand Setup (2026)
Learn how a personalised email domain affects brand trust, aliases, naming, DNS setup, and deliverability for business communication.
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Alexey Bulygin
Create Your Own Email Domain: End-to-End Setup (2026)
Follow the steps to create your own email domain, connect DNS, pick a mailbox host, and publish authentication records correctly.
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Alexey Bulygin
Domain Email Hosting: What You're Paying For (2026)
Understand what domain email hosting includes, how providers differ, and why DNS, SMTP, storage, and migration support all matter.
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Alexey Bulygin
Custom Email Address: From Domain Purchase to Working Mailbox (2026)
Set up a custom email address on your own domain with the right DNS, mailbox host, authentication, and migration-safe structure.
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Alexey Bulygin
DMARC Policy: None vs Quarantine vs Reject
Your DMARC policy can quietly expose your domain or quietly break your own mail. Here’s the practical path from p=none to p=reject without causing self-inflicted outages.
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Alexey Bulygin
DMARC Alignment: Fix SPF, DKIM, and Forwarding Failures
DMARC passes only when SPF or DKIM align with your visible From domain. Here’s why legitimate mail still fails, and how to fix it without breaking forwarding.
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Alexey Bulygin
Email Deliverability Monitoring for Small Teams in 2026
Most teams notice deliverability only after invoices, onboarding emails, or campaigns vanish into spam. Here's the monitoring routine that catches problems before they cost you.
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Alexey Bulygin
How to Create DKIM Record — Step-by-Step DNS Setup Guide
Step-by-step guide to create a DKIM record: generate your key pair, publish the public key in DNS, enable signing, and verify. Covers syntax, common mistakes, and key rotation.
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Alexey Bulygin
DMARC Fail: Fix Forwarding and Alignment Problems
DMARC fail on forwarded mail isn’t random. SPF breaks, DKIM gets mangled, alignment goes off the rails, and real messages vanish. Here’s how to diagnose it and fix it.
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Alexey Bulygin