Mail-Tester: avoid your emails going to spam

Introduction

When an email lands in spam, the problem is not always the wording of the message. Very often the cause is domain authentication, sending reputation or technical details that are easy to miss.

Mail-Tester is a very useful tool for checking that situation before you send important emails from your hosting account.

What Mail-Tester is

Mail-Tester is an online service that receives a test email and analyzes different deliverability factors. It then shows you an overall score and a report with the areas that are working well and the ones that should be corrected.

It usually reviews:

• SPF
• DKIM
• DMARC
• sending reputation
• possible blacklists
• message content
• HTML structure
• links, images and attachments

What it is useful for

It helps you detect why an email may end up in spam or be rejected. It is especially useful if:

• your customers say they are not receiving your messages
• you recently changed DNS or email settings
• you just created a mailbox in cPanel or DirectAdmin
• you want to review an important send before doing it

How to use Mail-Tester

1. Open the Mail-Tester website

Go to Mail-Tester in your browser.

2. Copy the temporary address

The page will show a test address similar to:

test-a1b2c@srv1.mail-tester.com

3. Write a realistic email

Send a message from the account you want to test. It is best to use a subject line and body that look like a real message, not an empty email.

4. Send it to the test address

Paste the temporary address as the recipient and send the email.

5. Read the report

Go back to Mail-Tester and run the check to see the score and the detailed analysis.

How to read the score

A simple interpretation could be:

• 9 to 10: very good setup
• 7 to 8: acceptable, but still improvable
• 5 to 6: there are issues that may affect delivery
• below 5: the message is quite likely to go to spam or be rejected

Do not focus only on the final number. The important part is understanding what causes the point loss.

Common issues it usually detects

Wrong or missing SPF

If SPF does not exist or is badly defined, some providers will not trust your domain.

DKIM disabled

DKIM digitally signs the email and helps prove that it was not altered.

DMARC not configured

DMARC improves control over what should happen when SPF or DKIM fail.

Poor IP or domain reputation

This can happen because of abuse, compromised accounts or insecure forms.

Suspicious-looking content

For example:

• too many capital letters
• too many exclamation marks
• shortened links
• image-only messages
• unnecessary attachments

Useful tips

1. Test with realistic content

   An empty email does not reflect normal usage.

2. Review SPF, DKIM and DMARC first

   They are the most important technical foundations for better deliverability.

3. Take care of the content too

   The technical setup matters, but an aggressive or confusing message can also hurt the result.

4. Use Mail-Tester after DNS changes

   It is a good way to confirm everything still works after moving zones or updating settings.

Frequently asked questions

Does Mail-Tester itself stop my emails from going to spam

No. It does not change your setup. It only detects problems and helps you correct them.

Does a score of 10 guarantee inbox placement

Not completely. Every provider uses its own filters, although a high score is a very strong sign.

Can I use it with cPanel or DirectAdmin accounts

Yes. You can test any real mailbox you use for sending email.

Conclusion

Mail-Tester is a simple and practical tool for reviewing the technical health of your emails before you send them.

If it detects errors in SPF, DKIM, DMARC, reputation or content, fixing them in time can make a big difference to deliverability.