Section
Email & deliverability
Newsletters, HTML email, SPF/DKIM/DMARC and inbox placement.
SPF, DKIM and DMARC: the authentication baseline that decides whether your email arrives
Google, Yahoo and Microsoft now require full authentication. What SPF, DKIM and DMARC cover, the order to deploy them, and…
HTML email: what still works in mail clients
Outlook still renders with the Word engine, Gmail rewrites styles, dark mode inverts colours. The real state of HTML email…
Deliverability: the six causes of spam placement that actually occur
Authentication in place and messages still in junk: the six real causes, in the order they appear, and the diagnostic…
DMARC: going from p=none to p=reject without blocking legitimate email
Publishing a DMARC record at p=none protects nothing: real protection starts when the policy moves to quarantine and then to…
BIMI: display your brand logo in the inbox
BIMI shows a brand's verified logo next to its emails, provided authentication is aligned and a certificate is in hand.…
List-Unsubscribe: The Header That Protects Deliverability Under Gmail and Yahoo’s Rules
Since 2024, Gmail and Yahoo have required one-click unsubscribing from any sender pushing more than 5,000 messages a day to…