Technical

What are best practices and costs for implementing DKIM, SPF, and DMARC?

When changing subdomains for email, is it better to change the 5321.from or 5322.from header for deliverability, and how does DKIM alignment affect this?

How should opens be used as a metric for email marketing?

Should the 5322.from domain identically match the d= domain for optimum email delivery?

How can a phishing email pass SPF and DKIM authentication checks?

How should I configure DMARC for multiple domains and when should I implement a reject policy?

How does DMARC policy application work with subdomains and CNAME records?

What are the best practices for email deliverability and avoiding spam filters?

Can DMARC reports be sent without RUA or RUF addresses?

How do email forwarding and DMARC policies affect email delivery and reporting?