Guides and notes for people who send email.

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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DNS & Deliverability 06 Sep 2026

One-Click Unsubscribe: List-Unsubscribe Headers in Laravel and Next.js

RFC 8058 List-Unsubscribe and List-Unsubscribe-Post on ArawaMail: Laravel mailables, POST /emails headers, and why transactional mail should omit them.

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DNS & Deliverability 06 Sep 2026

Gmail and Yahoo Bulk-Sender Requirements (2026) — Before Q4 Volume

Gmail’s 5,000/day bulk-sender rule is sticky and counts every subdomain. Checklist for Gmail, Yahoo, and Outlook before Q4 2026 volume.

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DNS & Deliverability 05 Sep 2026

Email List Hygiene in 2026 Without Hurting Deliverability

Clean hard bounces, complaints, and traps the same day. Sunset marketing names after re-engagement—not invoices. ArawaMail does not clean lists; you own recipient quality.

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Business Email 05 Sep 2026

Employee Email Offboarding: Disable the Mailbox and Rotate the API Key

When an employee leaves, disable the mailbox first, retarget catch-all, keep jane@ reachable, rotate sending API keys, and revoke MCP access. Do not delete on day one.

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DNS & Deliverability 04 Sep 2026

Why Marketing and Transactional Email Should Use Separate Subdomains

Why campaigns and receipts should not share one From domain. What subdomain splits isolate, what they do not, and how to keep brand reputation clean in 2026.

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DNS & Deliverability 03 Sep 2026

SPF, DKIM, and DMARC on Subdomains: What Inherits and What Doesn't

SPF never inherits. DKIM is per signing domain. DMARC can fall back via sp= or p=. When a sending subdomain needs its own keys, policy, and RFC 9989 tags.

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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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DNS & Deliverability 02 Sep 2026

Reverse DNS and PTR Records for Email Deliverability

PTR and FCrDNS live on the sending IP, not in your Cloudflare zone. Learn who sets reverse DNS, how to check it, and when branded rDNS is actually your job.

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Business Email Setup 02 Sep 2026

Aliases, Shared Inboxes & Plus Addressing for Company Email

Map hello@, support@, and billing@ on day one. Learn how aliases, plus-addressing, shared inboxes, forwarding, and catch-all differ—and what ArawaMail actually provides.

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DNS & Deliverability 01 Sep 2026

DKIM Key Rotation: Overlap Selectors Without Breaking Mail

Rotate DKIM by publishing a new selector first, verifying DNS, switching the signer, then keeping the old key 7–14 days. Never overwrite p= on a live selector.

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DNS & Deliverability 01 Sep 2026

How to Connect a Cloudflare Domain to ArawaMail

Connect a Cloudflare-hosted domain to ArawaMail: unlock Email Routing MX first, keep mail records DNS-only, then activate receiving, sending, and the first mailbox.

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