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Deliverability and DNS, explained.

Email authentication, DNS records, sender reputation, compliance, bounces, and reliable inbox placement.

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Deliverability and DNS notes

Practical writing on deliverability, business inboxes, and sending email from your product.

Deliverability & DNS 14 Sep 2026

Black Friday 2026 Will Punish a Dirty Domain

Black Friday 2026 is 27 November. Mixed promo and receipt mail on a dirty domain will push Gmail spam rates up. What to fix in September and October.

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Deliverability & DNS 09 Sep 2026

Don’t Buy a Dedicated IP Until the Domain Is Clean

A dedicated sending IP will not fix a dirty domain, high complaint rates, or missing authentication. Fix domain health first, then decide if isolation is useful.

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Deliverability & DNS 07 Sep 2026

DMARC Alignment vs SPF Pass: Why Alignment Is the Whole Game

SPF pass is not a DMARC pass. Learn relaxed vs strict alignment, why vendor MAIL FROM fails From-domain DMARC, and how ArawaMail custom MAIL FROM and DKIM fix it.

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Deliverability & DNS 03 Sep 2026

Two Vendors, One From Address: SPF, DKIM, DMARC Rules

Workspace plus SES on the same From domain fails in three ways: SPF soup, unaligned receipts, and resets support cannot find. How a split can work — and when to collapse.

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