Email Deliverability
All articles in Email Deliverability
Email Deliverability
Mailbox Blocked From Sending? Google and Microsoft Fixes
What to do when Google Workspace or Microsoft 365 stops outbound mail, and what to change before the next send.
Last updated · 6 min read
Email Deliverability
Is Cold Email Legal in Ireland? What the DPC Enforces
What Ireland's regulator says about email marketing, how it treats business contacts, and the checks I run before an Irish campaign sends.
Last updated · 12 min read
Email Deliverability
Is Cold Email Legal in Switzerland? The Rules for B2B
The Swiss spam rule in plain English, why business inboxes get no carve-out, the narrow customer exception, and where the revised data protection act fits around outbound.
Last updated · 12 min read
Email Deliverability
Why Your Cold Email Shows a Warning Banner and What to Fix
How the Outlook, Gmail and Google Workspace labels work, which ones every new sender gets, and which ones point at a sending setup you can repair before your next send.
Last updated · 10 min read
Email Deliverability
Should You Include Links in Cold Emails? A Decision Rule
What Gmail and Microsoft actually publish about links, images, attachments and HTML, and a simple rule for what belongs in the first cold email.
Last updated · 10 min read
Email Deliverability
Why DKIM Fails on Cold Email Domains and How to Fix It
What breaks DKIM on cold sending domains, where key length and rotation fit in, and the order to check things when dkim=fail or dkim=none shows up.
Last updated · 10 min read