Insights on email privacy & productivity.
Tips, guides, and deep dives from the Cleanbox team.
Rspamd Spam Symbols Explained: What Your Spam Report Is Telling You
Rspamd symbols decoded - BAYES_SPAM, DMARC_POLICY_REJECT, ZERO_FONT and 12 more. What each one means, why it triggered, and how to act on it.
How to Unsubscribe from All Marketing Emails at Once
The average person is subscribed to 120+ mailing lists. Here is how to mass-unsubscribe safely - and prevent it from happening again.
How to Automate Incoming Helpdesk Emails with the Cleanbox API
Use the Cleanbox API to poll incoming support emails, auto-categorize by sender, extract attachments, and create tickets in your helpdesk system. Complete Python implementation included.
How to Block Emails on Gmail, Outlook, iCloud, and Yahoo
Step-by-step blocking guides for every major provider - plus why per-address blocking has limits and what works better.
How to Stop Data Brokers from Having Your Email Address
Data brokers collect, package, and sell your personal information - including your email address - to advertisers, marketers, and anyone willing to pay. Here is how they get your data, what they do with it, and step-by-step instructions for opting out and preventing future collection.
What Is a Mail Relay and How Does It Work
A beginner-friendly explanation of mail relays - what they are, why they exist, how they fit into the SMTP chain, and the different types of relays used in modern email infrastructure. Understand the technology that sits between the internet and your mailbox.
What Are Transactional Emails and Why They Matter More Than Marketing
Order confirmations, password resets, shipping updates - transactional emails are the ones you actually need. How they differ from marketing, why they get special treatment, and how to protect them.
Email Overload Is Real: The Hidden Cost of an Unmanaged Inbox
The average professional spends 28 minutes per day on email triage. Here is the data on what that costs and a concrete plan to fix it.
Email Account Compromises: How They Happen and How to Prevent Them
Compromised email accounts are surging. How attackers get in, the warning signs, and the two things that stop almost all of them.
How Cleanbox Filters Work Under the Hood
A deep dive into the filter engine: 10 condition types, 12 operators, rule groups with boolean logic, and how filters interact with contact states and spam scoring.
Why You Should Stop Using Gmail as Your Business Email
Your email address is often the first impression you make on a potential client. If it ends in @gmail.com, that impression might be costing you trust, credibility, and revenue. Here is why custom domain email matters and how to make the switch.
What Is TLS in Email and How Does It Protect Your Messages
TLS is the encryption standard that protects your emails in transit. Learn how TLS works in email, what STARTTLS does, the difference between opportunistic and enforced TLS, and what TLS does not protect.
