The Mailer Mark blog
Better emails, without the tech
Plain-language guides to newsletters, cold email and getting into the inbox — for small businesses without a marketing department.
Guide5 October 2026 · 7 min read
How to write a newsletter people actually open
A small-business newsletter doesn't need to be long or clever. It needs one clear reason to open it, something useful inside, and a steady rhythm. Here's how.
Read itGuide5 October 2026 · 8 min read
Cold email that doesn't feel cold: a small-business guide
Cold email works when it's relevant, personal and short — and when you respect the rules. How to pick who to write to, what to say, and how to follow up.
Read itGuide5 October 2026 · 8 min read
Email deliverability in plain English (SPF, DKIM, DMARC)
Why good emails end up in spam, and what SPF, DKIM and DMARC actually do — explained without the jargon, with a simple checklist for your business.
Read itBlog5 October 2026 · 5 min read
Newsletter vs cold email: when to use which
Newsletters keep people who already know you coming back. Cold email starts conversations with people who don't — yet. What each is for, and how they fit together.
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