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email deliverability best practices

Found 4 articles tagged with "email deliverability best practices"

How to Open Winmail.dat (and Stop It)
Tutorial
8 min read

How to Open Winmail.dat (and Stop It)

DevToolLab Team
DevToolLab Team·

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How to Read DMARC Reports (Aggregate XML)
Tutorial
7 min

How to Read DMARC Reports (Aggregate XML)

A DMARC aggregate report is a daily XML tally per sending IP. Read policy_evaluated, not auth_results, to see why SPF can pass while DMARC still fails.

DevToolLab Team·
Unclaimed Funds Notification System Design
Guide
5 min

Unclaimed Funds Notification System Design

Designing an unclaimed funds alert system: Kafka or RabbitMQ queues, idempotent workers, SPF, DKIM and DMARC email, and fuzzy matching on names and addresses.

DevToolLab Team·
Email Authentication for Developers: SPF, DKIM, DMARC, BIMI, and MTA-STS in 2026
Guide
9 min

Email Authentication for Developers: SPF, DKIM, DMARC, BIMI, and MTA-STS in 2026

Microsoft started rejecting unauthenticated bulk email in May 2025. This is the developer's guide to SPF, DKIM, DMARC, BIMI, and MTA-STS -- with real DNS records, a rollout strategy, and tools to verify everything.

DevToolLab Team·
Email deliverability best practices - Blog Posts - DevToolLab