Don’t just take our word for it - hear from some of our satisfied clients.
Word to the Wise
We make email better.
We make email better.
Word to the Wise helps email marketers create more effective email messages, programs and infrastructures. We advise you how to skilfully navigate the constant business, technology, and policy challenges so your messages reach your customers.
We can help you with your email strategy, deliverability challenges and many other email issues.
What others say
Recent Articles
IPv4 and IPv6
- steve
- Dec 16, 2025

There are two Internets
There are two separate Internets, the Old Internet and the New Internet. They might travel over the same ethernet cables or wifi, but they’re quite separate and rarely directly interact with each other.
Read MoreLet's Talk Reengagement
- laura
- Dec 5, 2025
I appear to have written a lot about about re-engagement on the Email Geeks slack channel the last few days. The problem with slack is it’s not great at archiving or keeping information in an accessible, searchable manner. So, I’ve pulled together the answers, rearranged it, made it slightly more coherent and a little less stream of consciousness, so I can reference this when the topic comes up again.
Read MoreFolding email headers
- steve
- Nov 21, 2025
Why are my DKIM signatures failing at Microsoft?
There are several reasons why your DKIM signatures might be failing at Microsoft, but perhaps not at other major providers. Many of them are triggered by sending mail that’s “badly structured” in some way. This is one of them.
Read MoreUndisclosed Recipients
- steve
- Nov 14, 2025
To: Undisclosed recipients:;
Very occasionally you’ll see something in the To: header of an email that isn’t the email addresses you expect, instead it’s the string Undisclosed recipients:;. What does that mean?
B2B Spam: Strapi, Unstructured and Reo
- steve
- Oct 17, 2025
About a year ago I was rebuilding this blog, moving it from WordPress to … something else. I evaluated several content management systems for that, and one of them was Strapi.
Read MoreChanges happen, even if you don't keep up
- laura
- Sep 24, 2025
I cannot count the number of times I hear someone complain that they didn’t change anything and now their email isn’t delivering and why did this happen all of a sudden and how can they be blocked now when they weren’t blocked 3 months ago. Nothing changed, so why all of a sudden is mail failing?









