Field notes on email, deliverability, and the engine.
Honest writing from the team that builds CleanMyList. Mostly engineering. Sometimes deliverability playbooks. Occasionally a rant about the state of the category.
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What we have been writing recently.
- check email list for bounces
How to Check Email List for Bounces: Boost Deliverability
Learn to check email list for bounces. Reduce hard bounces & protect sender reputation. Improve deliverability now!
CleanMyList Team15 min read - hard bounce vs soft bounce
Hard Bounce vs Soft Bounce: Differences & Deliverability
Understand the difference between a hard bounce vs soft bounce, their causes, and impact on deliverability. Clean your list & protect your reputation.
CleanMyList Team12 min read - gdpr email compliance
GDPR Email Compliance: A Step-by-Step Guide for 2026
Master GDPR email compliance with our step-by-step guide. Learn about consent, data storage, audits, and vendor contracts to avoid fines and build trust.
CleanMyList Team23 min read - funny subject lines for emails
10 Funny Subject Lines for Emails: Formulas That Work
Steal our 10 proven formulas for funny subject lines for emails that boost open rates. Learn to write witty, effective subject lines that get clicks.
CleanMyList Team19 min read - email list clean up
Email List Clean Up: A Start-to-Finish Guide for 2026
Our complete email list clean up guide shows you how to reduce bounces, improve deliverability, and protect your sender reputation with actionable steps.
CleanMyList Team13 min read - api email validation
API Email Validation: Boost Deliverability & Reputation
Understand API email validation, its function & integration. Reduce bounces, boost deliverability & protect sender reputation.
CleanMyList Team17 min read - response validation google forms
Response Validation Google Forms
Learn to use response validation google forms to collect cleaner data. This guide covers rules, regex, and best practices for error-free submissions.
CleanMyList Team14 min read - ip reputation services
IP Reputation Services: A Guide to Better Deliverability
Learn how IP reputation services work, how your score is calculated, and how to fix a bad reputation to improve email deliverability and reach the inbox.
CleanMyList Team16 min read - disclaimer in emails
Disclaimer in Emails: A Practical Guide for Marketers 2026
Do you need a disclaimer in emails? Our guide explains their legal weight, wording best practices, and impact on deliverability for marketers and senders.
CleanMyList Team15 min read - inbox placement test
Inbox Placement Test Guide for Marketers in 2026
What is an inbox placement test and why does it matter? Learn how to test deliverability, interpret results, and fix issues to land in the primary inbox.
CleanMyList Team13 min read - peak org email
Achieve Peak Org Email: Boost Sender Reputation
Achieve peak org email performance. Verify emails, interpret signals (catch-all, disposable), & reduce bounces to protect sender reputation.
CleanMyList Team13 min read - signing someone up for spam
Signing Someone Up for Spam: A Guide for Victims & Senders
Learn what signing someone up for spam means, the consequences, and how to stop it. A complete guide for victims and businesses looking to prevent fake signups.
CleanMyList Team15 min read - scrape emails from websites
Scrape Emails from Websites: Ethical Tools & Methods
Effectively scrape emails from websites. Explore manual, automated, and coding methods, ethical guidelines, tools, and validation for 2026 results.
CleanMyList Team15 min read - how to compose a business email
How to Compose a Business Email That Gets Results
Learn how to compose a business email that people actually read and reply to. Our guide covers subject lines, structure, templates, and deliverability tips.
CleanMyList Team16 min read - how to reduce bounce rate
How to Reduce Bounce Rate: A Playbook for Web & Email
Learn how to reduce bounce rate on your website and in email campaigns. This guide covers diagnosing causes, fixing UX, page speed, and email list hygiene.
CleanMyList Team16 min read - how to clean email list
How to Clean Email List: Your 2026 Guide
Master how to clean email list with our 2026 playbook. Boost deliverability, reduce bounces, & protect your sender reputation. Get started now!
CleanMyList Team15 min read - email address formatting
Email Address Formatting: A Guide to RFCs and Safe Regex
Master email address formatting with our complete guide. Learn RFC rules, practical deviations, safe regex patterns, and validation best practices for 2026.
CleanMyList Team14 min read - javascript email validation
JavaScript Email Validation: Master Regex & API Checks
Master JavaScript email validation. Learn effective regex, real-time API checks, and best practices for robust data protection & UX in 2026.
CleanMyList Team15 min read - list manager email
List Manager Email: Enhance Deliverability & Reputation
Master your list manager email strategy. Boost deliverability & protect sender reputation with expert tips on hygiene, segmentation, and essential tools.
CleanMyList Team18 min read - email list cleaning tools
10 Best Email List Cleaning Tools for 2026
Find the best email list cleaning tools for 2026. Our guide compares 10 top services on price, features, and accuracy to keep your bounce rate low.
CleanMyList Team21 min read - gmail spam
How to Stop Emails Going to Spam Gmail: 2026 Guide
Are your emails landing in spam? Learn how to stop emails going to spam gmail with our 2026 guide on authentication, list hygiene, and content.
CleanMyList Team16 min read - bulk email verification online
Bulk Email Verification Online: A Practical Guide for 2026
Learn what bulk email verification online is and how it works. Our guide covers interpreting results, choosing a provider, and best practices to reduce bounces.
CleanMyList Team14 min read - improve email deliverability
How to Improve Email Deliverability: A 2026 Playbook
Struggling with spam folders? Learn how to improve email deliverability with our step-by-step guide on SPF/DKIM, list hygiene, content, and sender reputation.
CleanMyList Team14 min read - free bulk email checker
10 Best Free Bulk Email Checkers for 2026
Find the best free bulk email checker. We review 10 top tools for accuracy, free limits, and privacy to help you clean your list and boost deliverability.
CleanMyList Team20 min read - mailing list cleaning services
Top Mailing List Cleaning Services: 2026 Guide
Find the best mailing list cleaning services to reduce bounces & protect sender reputation. Compare top tools by accuracy, price, and privacy for 2026.
CleanMyList Team19 min read - what is a disposable email address
What Is a Disposable Email Address? a Complete Guide
Learn what is a disposable email address, why it hurts deliverability, and how to detect and block them to protect your sender reputation and marketing ROI.
CleanMyList Team13 min read - email deliverability consultant
Email Deliverability Consultant: Maximize Your Inbox
Hire an email deliverability consultant to fix inbox placement & boost sender reputation. Learn about services, ROI, and vetting questions.
CleanMyList Team18 min read - relationship email
In Email Marketing What Is a Relationship Email? a Guide
In email marketing what is a relationship email? Build loyalty with examples, templates, & strategies for nurturing emails, not just selling.
CleanMyList Team15 min read - improve email open rates
7 Ways to Improve Email Open Rates in 2026
Want to improve email open rates? Discover 7 expert-backed tactics and tools for 2026, from list hygiene to subject line AI, to get more emails seen.
CleanMyList Team16 min read - undeliverable mail message
Undeliverable Mail Message: Decode & Fix Email Bounces
Got an undeliverable mail message? Learn bounce causes, decode SMTP codes, and follow our guide to fix deliverability & protect your sender score.
CleanMyList Team13 min read - what is email verification
What Is Email Verification? a Guide to Cleaner Lists
Wondering what is email verification? Learn how it works, why it's crucial for reducing bounces and protecting your sender reputation, and how to get started.
CleanMyList Team17 min read - email validation
How to Check if Email Is Valid: A 2026 Guide
Learn to check if email is valid with step-by-step methods. Our 2026 guide covers syntax, DNS/MX, SMTP probing, and handling risky catch-all accounts.
CleanMyList Team14 min read - buying a list
Buying a List: Risks, Safeguards, and Alternatives
Thinking of buying a list? Understand the huge risks to your deliverability and reputation. Learn harm-reduction steps and smarter, safer alternatives.
CleanMyList Team17 min read - best email bounce checker
10 Best Email Bounce Checker Tools for 2026
Looking for the best email bounce checker? We tested 10 top tools on accuracy, price, and features to help you protect your sender score and boost ROI.
CleanMyList Team17 min read - blacklist an email
How to Blacklist an Email: A 2026 Guide for All Users
Learn how to blacklist an email in Gmail or Outlook, manage suppression lists, and fix public blacklist issues. A complete guide for users and marketers.
CleanMyList Team15 min read - best email validation tool
The 10 Best Email Validation Tools for 2026
Find the best email validation tool for 2026. We review 10 top services on accuracy, pricing, and features to help you reduce bounces and boost deliverability.
CleanMyList Team18 min read - yahoo email file size limit
Yahoo Email File Size Limit: Your 2026 Guide & Workarounds
Hit the Yahoo email file size limit? Learn the 25MB attachment cap, the new 20GB storage limit, and how to send large files with cloud links or compression.
CleanMyList Team12 min read - email verification api
Email Verification API: A Complete 2026 Guide
Learn what an email verification API is, how it works, and how to choose the right one. This guide covers integration, best practices, and pitfalls for 2026.
CleanMyList Team17 min read - email list cleaner free
Email List Cleaner Free
Get a spotless list with our 2026 guide! Discover how to use an email list cleaner free, learn manual methods & find tools for professional results.
CleanMyList Team13 min read - message is truncated
Message Is Truncated: Why It Happens and How to Fix It
Seeing a 'message is truncated' error? Learn why emails get clipped in Gmail, Outlook, or SMTP servers, and get actionable steps to diagnose and fix it.
CleanMyList Team15 min read - email on blacklist
Email on Blacklist: How to Fix Your Sender Reputation
Found your email on blacklist? Don't panic. Learn how to check status, request delisting, and protect your sender reputation in 2026.
CleanMyList Team15 min read - who owns emails
Who Owns Emails: Clarifying Digital Rights 2026
Who owns emails? Our 2026 guide clarifies ownership for users, employers, and marketers, covering legal implications & compliance.
CleanMyList Team16 min read - best time to send a newsletter
Best Time to Send a Newsletter: A Data-Driven Guide 2026
When is the best time to send a newsletter? We analyze data on days, times, and industries to help you find your perfect send window and test it effectively.
CleanMyList Team15 min read - Engineering
How we spot spam traps before they wreck your sender reputation
Spam traps are the silent killer of cold outreach. Here is how our new ninth check, powered by Abusix's live abuse-intelligence feed, catches them before a single send.
Theo Lindgren6 min read - Deliverability
What makes an email verifier actually accurate
Vendors love quoting 99% accuracy. Here is what that number actually means, and where most providers quietly miss.
Maren Okafor7 min read
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