SPF, DKIM and DMARC explained in plain English
What SPF, DKIM and DMARC actually do, what the DNS records look like, how alignment works, and how to move to an enforced DMARC policy without breaking your own mail.
Deliverability
Practical, no-hype guides for people who send email: list verification, authentication, deliverability and campaigns that get results.
Gmail and Yahoo bulk sender requirements, a practical checklist
A clear checklist of the Gmail and Yahoo bulk sender requirements, what applies to every sender versus bulk senders, and how to meet each item without guesswork.
How to improve email deliverability, 12 practices that actually matter
Twelve concrete practices to improve email deliverability, from authentication and list verification to warm-up, sunsetting inactive contacts and testing before you send.
Hard bounce vs soft bounce, what the difference means for your list
The difference between hard and soft bounces, what the SMTP codes mean, how blocks and complaints differ, and exactly what to do with each so bounces stop hurting your reputation.
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