Insights on email privacy & productivity.
Tips, guides, and deep dives from the Cleanbox team.
The Unsubscribe Myth: Why That One Email Is Not the Problem
You get one bad email and hit unsubscribe. But the real question is why you were subscribed in the first place, and why unsubscribing often does not solve the actual problem.
How to Protect Your Company Email from Phishing: A Practical Guide
A layered approach to defending your business email against phishing - from DNS authentication to employee training to relay filtering.
What Email Providers Don't Tell You About Your Privacy
What Gmail, Outlook, and Yahoo actually do with your email data - scanning, tracking, metadata collection, and what you can do about it.
The Hidden Life of an Email: From Send to Inbox in 12 Steps
You click Send. The email arrives 3 seconds later. But between those two clicks, your message traveled through DNS lookups, SMTP handshakes, TLS negotiation, spam scanning, virus checks, and authentication verification. Here is the complete journey.
7 Reasons Why Your Emails Are Not Arriving (and How to Fix Each One)
Your emails are disappearing into the void. Here are the seven most common causes - from DNS misconfiguration to blacklisted IPs - and how to fix each one.
I Keep Getting Emails After Unsubscribing - 6 Reasons Why
Clicked unsubscribe but the emails keep coming? Here are six reasons the unsubscribe button fails and three methods that actually work when it does not.
Google and Yahoo Email Requirements: What Changed and What You Need to Do
In 2024, Google and Yahoo enforced strict authentication and unsubscribe requirements for bulk senders. Here is what you need to comply.
How We Built AI-Powered Spam Detection That Understands What Emails Actually Say
Traditional spam filters count words. Ours reads the email, understands context, spots brand impersonation, and explains its reasoning in plain English. Here is how we built it and what it catches that Bayesian filters miss.
Email Security for Freelancers: Protect Your Professional Reputation
A practical email setup for freelancers - custom domain, alias per client, spam protection, and professional appearance on a budget.
DMARC Alignment Explained: Why Authentication Alone Is Not Enough
Passing SPF and DKIM is not enough for DMARC. Learn what identifier alignment means, the difference between relaxed and strict modes, and why forwarding breaks SPF alignment but preserves DKIM alignment.
How to Audit Your Email Infrastructure for Security Weaknesses
Your MX records are public. Your SMTP banner reveals your software. Your TLS config may be outdated. Here is a step-by-step security audit of your email infrastructure using free tools - and how to fix what you find.
How to Block Spam Emails on iPhone and iPad
A complete guide to blocking spam emails on iOS. Learn how to block senders, report junk, filter unknown senders, use mail rules, and understand why server-side filtering matters more than anything you can do on the device itself.
