Email Spam Checker: How to Keep Your Emails Out of the Spam Folder

In today’s digital world, the last place you want your carefully crafted email campaign to end up is in the spam folder. That’s where an email spam checker comes in handy. By testing your emails before sending them, you can avoid common mistakes, improve deliverability, and make sure your message actually reaches your subscribers.

What Is Spam?

Email spam refers to unwanted or unsolicited emails sent in bulk, often for marketing, phishing, or malicious purposes. Internet Service Providers (ISPs) and mailbox providers like Gmail and Outlook use advanced filters to protect users from spam. Unfortunately, even legitimate businesses can sometimes get flagged and land in spam if their campaigns contain errors, “spammy” words, or come from servers with poor reputations.

What Are Spam Words (Badwords)?

Certain words and phrases, often called “spam trigger words” or badwords, increase the likelihood of your email being flagged. Examples include:

• “Free money”
• “Risk-free”
• “Congratulations, you’ve won”
• Excessive use of ALL CAPS or too many exclamation marks!!!

These signals make spam filters suspicious, as they are commonly used in fraudulent or low-quality emails.

👉 To avoid problems, write naturally, keep your message professional, and avoid stuffing your email with overly promotional terms.

Why You Should Test Your Campaign Before Sending

The best way to protect your campaigns is to use an email spam checker before hitting send. A highly recommended tool is Mail-Tester.

Here’s how it works:

1. Visit the website.
2. Copy the unique test email address it gives you.
3. Send your campaign to that address.
4. Instantly receive a detailed report that shows what’s right and wrong with your email.

Mail-Tester provides up to 5 free tests per day, making it an excellent way to ensure your emails pass through spam filters smoothly. It highlights issues such as broken links, missing SPF/DKIM/DMARC records, and overuse of spam words.

👉 If you want to know more about spam words to avoid, click here.

Selfhostedsmtp.com: 10/10 Send Score Guaranteed

While spam checkers are vital, your email server reputation plays an even bigger role in deliverability. Many third-party services impose strict rules or struggle with maintaining strong IP reputations.

That’s where selfhostedsmtp.com stands out. Our servers are optimized for maximum deliverability and always achieve a 10/10 send score by default. This means you don’t have to stress over complex setup, DNS records, or reputation management—we handle it all for you.

With a self-hosted SMTP solution, you get:

• Guaranteed 10/10 Mail-Tester score.
• Full control over your email infrastructure.
• No sudden restrictions or account suspensions.
• Cost-effective sending at scale.

Final Thoughts

An email spam checker is an essential tool to keep your campaigns out of the junk folder. By testing before sending and keeping spam words to a minimum, you can drastically improve deliverability.

For the best results, combine smart email practices with a reliable sending solution. With selfhostedsmtp.com, you’ll enjoy guaranteed 10/10 scores, excellent deliverability, and peace of mind knowing your emails land exactly where they should: in the inbox.