Insights on email privacy & productivity.
Tips, guides, and deep dives from the Cleanbox team.
Why Double Opt-In Matters (Even If You Are Not a Marketer)
As an email recipient, you benefit when senders use double opt-in. Here is why it reduces spam, prevents abuse, and how to tell which senders do it right.
The Complete Guide to Email Deliverability for Small Senders
You send fewer than 5,000 emails a day but messages still land in spam. A practical guide to authentication, reputation, and content for small-volume senders.
Email Aliases vs VPN: Different Privacy Tools for Different Problems
A VPN hides your IP address. Email aliases hide your email address. They protect different things - here is when you need which.
How to Protect Your Email Address When Shopping Online
Every time you enter your email at checkout, you are handing it to an unknown chain of marketing partners, analytics platforms, and data brokers. Here is how to shop online without sacrificing your inbox - from email aliases to guest checkout and privacy-first habits.
The Real Cost of Free Email: What You Pay When You Do Not Pay
Gmail, Outlook, and Yahoo are free because you are the product. What they collect, what it costs you, and where to draw the line.
How Gmail Detects Spam: An Inside Look at Google's Email Filtering
Gmail processes billions of emails daily with a multi-layered spam detection system. Here is how authentication checks, reputation scoring, machine learning, and user signals work together to filter spam.
DNS for Email: Everything You Need to Know (But Were Afraid to Ask)
MX, SPF, DKIM, DMARC, PTR, BIMI, MTA-STS - a plain-English deep dive into every DNS record that affects email delivery, authentication, and security.
The Problem with TLD Reputation: Why .xyz and .top Domains Get Blocked
Some domain extensions have such a bad reputation that email from them is blocked by default. Which TLDs are affected, why, and how to filter on them.
QR Code Phishing (Quishing): The Email Threat Your Spam Filter Might Miss
QR codes are everywhere, and cybercriminals know it. Quishing - phishing via QR codes embedded in emails - is surging because traditional spam filters cannot read images the way they scan links. Learn how this attack works, why it is so effective, and how to protect yourself.
Spam Filters Explained: How Email Providers Decide What Is Spam
Bayesian classifiers, IP blacklists, authentication checks, and machine learning - how modern spam filters work under the hood, and why they sometimes get it wrong.
Email Security Made Simple - A 6-Step Setup Guide
One tool is never enough. This guide walks through six proven security layers - from aliases to encryption - that anyone can set up in an afternoon.
Apple Hide My Email vs Dedicated Email Alias Services
Apple Hide My Email offers seamless alias generation for iCloud+ users, but it comes with ecosystem lock-in and limited control. We compare it to dedicated alias services to help you decide which approach fits your privacy needs.
