Buried in the metadata headers of every email lies a mysterious field – Precedence – that subtly influences how your messages get handled. This antiquated priority tag has curious origins and mischievous effects, for good and ill.Join me as we unravel the secrets of this slippery field and its continued … Read more

Buried in the headers of every email is an obscure field called “MIME-Version”. This cryptic label has a huge influence on your inbox, but what exactly does it mean? Let’s decode the secrets of this behind-the-scenes player.Have you ever tried to email a photo or video only to find the … Read more

You’ve got mail! But can you trust who it’s really from?Email spoofing tricks millions each year by disguising the true sender behind a familiar name and logo. This prevalent attack vector fuels wider scams manipulating human trust to devastating effect.This comprehensive guide demystifies the spoofing techniques that compromise business data, … Read more

If you’ve tinkered with email protocols before, you may have come across an unassuming acronym – APOP. At first glance, it seems like legacy tech. But APOP played a pivotal role in email’s history by patching a core vulnerability in plain old POP3. This article will lift the hood on … Read more

Have you ever peeked under the hood of an email message and seen cryptic text containing things like “Received-SPF: Pass”? If you’ve wondered what that’s about, this guide will decode the mystery behind those brief but powerful SPF results.Understanding Received-SPF can level up your email security, improve deliverability, and help … Read more

Unraveling the tangled mysteries behind the References field lurking within your email headers. This complete guide demystifies everything to know about References – from the nitty-gritty technical details through to practical importance organizing your biggest email debates. What is the Mysterious References Field in Email Headers? You open your inbox … Read more

Ever wondered what that mysterious Reply-To field does in email headers? Do your recipients’ responses sometimes confusingly end up in the wrong inbox? Understanding this lesser-known header can level up your email game.Join us as we decode the purpose of Reply-To, when and how to use it, whether it’s fully … Read more

Have you ever felt that nagging uncertainty about the true sender of an email? Or agonized over why important messages end up in spam purgatory? Hidden header secrets hold the answers!This insider guide unpacks the coveted Received field for email master-level enlightenment. We’ll explore how this metadata trail authenticates sender … Read more

Ever notice those keywords under each message in your inbox view? The Keywords field is an unsung hero that can transform the way you organize, search, and filter emails when leveraged properly.While this customizable header is not part of the standard, services like Mutant Mail make it a game changer … Read more

How long can your crazy custom email address with 37 domains really be? What’s the limit before @outofcontrol.plentylongheredude gets rejected?We’ll dig into email address lengths to pin down what that practical ceiling is according to internet standards in 2024. Turns out it’s shorter than you may expect! Rumors of 320 … Read more