The Deliverable Diary

When sending an email, simply hitting ‘send’ is rarely enough to ensure your message lands where it should. Many steps can be taken to improve email deliverability: one such step is email subdomains. Here we’ll dive into email subdomains and explain why they’re important. What is an Email Subdomain? A subdomain is a subset of […]

You’ve crafted the perfect email: it’s clear, professional and just the right touch of charm. Now comes the final step—sending it out. But should you CC or BCC your recipients? Making the wrong choice can lead to email mishaps and even privacy concerns. Let’s break down the differences between CC and BCC, their appropriate uses […]

Are your subscribers struggling to find the unsubscribe link buried in your email footer (and no, that’s not a good thing)? The answer to streamlined unsubscribe requests lies in list-unsubscribe headers, a game-changer for email marketers. What Are List-Unsubscribe Headers? A list-unsubscribe header is an email header containing specific unsubscribe instructions. This allows email clients […]

Enhancing your email marketing strategy with alt text is a game-changer. Alt text, short for alternative text, is a brief description added to images in your emails. When images don’t load, this small piece of text ensures your message still gets through. Here’s why it’s essential and how to use it effectively: Why Alt Text […]

Have you ever encountered a “550 unable to verify sender address” or “550 Sender verify failed” error while attempting to send an email? These cryptic messages can leave you scratching your head, wondering what exactly went wrong. Don’t worry, we’re here to shed light on this issue and guide you through understanding and resolving it. […]

We frequently encounter questions such as, “Which port should I use?” or “Why the sudden need to switch ports when everything worked perfectly yesterday?” Admittedly, these questions aren’t straightforward to address. Why, you ask? Surprisingly, it’s not solely within the control of an external SMTP provider. Factors such as your Internet Service Provider (ISP), firewalls, […]