How to Avoid Anti-Spam Filters in Email Marketing

In the world of email marketing, anti-spam filters are the bane of email marketers. In email marketing, you have to pass all content inside your email according to W3 browser standards. Find out more about this matter.


Anti-spam filters are the bane of email marketers. In email marketing, you have to pass all content inside your email according to W3 browser standards, as if it's an HTML document. In a manner of speaking, that's exactly what it is. HTML design, especially in emails, is a tricky subject and has to be studied with care and patience. Different browsers have conflicting HTML rendering issues, Internet Explorer evidently is the worst of it. Spam is the equal of junk mail. Anti-spam filters treat overly erroneous emails as spam. To avoid this, you will have to pay attention to certain parts of your email. Typically, an email is divided into three sections; the sender's address details, the subject line and the content body.


The Header


To prevent your emails getting caught between spam filters, follow some of these advices:


1.Don't use open relays when sending emails. That is, sending a mail using a different mail server.
2. Don't send mails through more than one mail servers. Doing so will clutter your email with multiple 'Received headers'.
3. Don't display the 'Sent to' part, if possible.
4. Also, 'Sent to' field must not have a blank or missing address.
5. Neither should the 'Reply to' header be missing.
6. If possible, avoid using the same email address for 'From:' and 'To:' headers.
7. The excessive use of CC and BCC headers is a red flag for anti-spam filters. Remember that.
8. Speaking of CCs and BCCs, the 'To:' header shouldn't contain multiple addresses of the same domain or ID


The Subject Line


The following are a few tips on how to write your subject line and at the same time avoiding spam filters:


1. Always put a subject on the subject line.
2. Create concise, direct to the point and interesting subject lines.
3. Never use the word 'free'. Nor suspicious words like discounts, porn, teen and so on.
4. Avoid using words in ALL CAPS.
5. Steer clear from punctuation marks.
6. Don't end it with a numeric digit.
7. Don't use the 'Adv:'
8. Avoid too many gaps or white spaces.
9. In addition, don't panic. If you follow these advices, your email won't be trapped by the spam filter.


The Message Body


Before we get to the rules, let's have a quick look on how anti-spam filters work. Technically, anti-spam filters try to find certain flagged words and phrases. An email is then evaluated and given a score. Emails containing one flagged word too many will end up getting blocked by the spam filter. Here are some rules:


1. Much like in the subject line, don't use provocative or perverse words.
2. Drop the word 'free'.
3. Avoid ALL CAPS.
4. Put in substantial amount of text.
5. Avoid clutter words or fluff or rant.
6. Maintain a decent text-to-image ratio.


Lastly and most importantly, think like a spam filter while writing your article!

Circle
Resources

Insights

Get the latest strategies, trends, and real-world insights to improve every customer interaction.
Article image

How WhatsApp For Business Improves Customer Service

Nobody likes waiting on hold. Long queues frustrate callers and overload teams. That’s why many leading organizations are using WhatsApp for Business as a customer service tool to cut wait times, boost satisfaction, and offer help in any language.
Read More Arrow
Article image

Why KYC Is Evolving In 2025

Want to understand how KYC is changing in the Middle East, and what that means for your organization? This article outlines key changes shaping KYC compliance in the Middle East, and what you can do now to stay ahead.
Read More Arrow
Article image

The AI-Powered Revenue Strategy You Might Be Overlooking

AI is transforming businesses worldwide, improving efficiency, and unlocking new opportunities. With all the hype, many organizations rush into adopting solutions but don’t use them to their full potential.
Read More Arrow
Article image

Speed, Accuracy, Compliance - How IDP is Helping to Transform the Loan Approval Processes

How a leading Middle East bank cut business loan approval times with the help of EDC’s Intelligent Document Processing (IDP) solution
Read More Arrow
Article image

How Digital Trust Drives Faster, Sustainable Business Growth

The global shift toward digital transactions and processes is transforming how businesses operate, nowhere more so than right here in the Middle East. As the region embraces this trend, the volume of digital interactions is rising rapidly.
Read More Arrow
Article image

5 CX Metrics You Should Track in 2025

Customer experience (CX) metrics are indispensable tools for businesses aiming to thrive in 2025. These metrics provide actionable insights into how clients perceive your brand and interact with your service, allowing you to refine processes, enhance satisfaction, and maintain a competitive edge.
Read More Arrow
Article image

How AI is Driving Multilingual Customer Experience in the Middle East

You can’t create satisfying customer experiences without effective communication. That much is clear, but what does that mean for linguistically diverse regions like the Middle East?
Read More Arrow
Article image

Mapping to Movement - Customer Journey Mapping That’s Insightful, Actionable And Valuable

With the surge in data gathering over the past decade, organizations are now collecting enormous amounts of data, managing countless documents and assets, and engaging with individuals via numerous touchpoints.
Read More Arrow
Article image

Moving Beyond Legacy Systems - Embracing Agile Innovation

The current commercial landscape is increasingly dominated by organizations that utilize advanced digital solutions first and are able to adopt and integrate new solutions quickly.
Read More Arrow
Article image

How Interactive Bank Statements Increase Customer Loyalty

Bank statements have traditionally been viewed as a simple necessity—a mandatory record of transactions sent periodically to customers. They were functional but not exactly engaging.
Read More Arrow
Article image

The Future of Customer Experience: 7 Trends Shaping 2025

Customer expectations around service levels are, quite rightly, continuing to rise, businesses must constantly anticipate and adapt to meet these rising demands
Read More Arrow
Article image

EDC Partners with Mawarid Finance to Deliver Comprehensive Card Solutions

We recently announced a new partnership with Mawarid Finance, a leading provider of Sharia-compliant financial products and services, to deliver a comprehensive card solution.
Read More Arrow
Circle
Contact Us

Get Updated With The Latest Insights!

Subscribe today to read our insights and see how EDC can help you improve the customer experience of your business.
Contact sales by phone: +971 4 3150000
Contact sales by email: sales@edc.ae