My emails go to spam: causes and solutions

Introduction

If your emails keep landing in the spam folder, the issue is not always the hosting itself. Most of the time, the recipient filters detect low-trust signals in the domain, in the message content or in the sending method.

The good news is that there is usually plenty of room for improvement.

Most common causes

1. Missing SPF, DKIM or DMARC

Without these records, email providers have more reasons to distrust the message.

2. Poor domain or IP reputation

This can happen because of abusive sending, compromised accounts, insecure forms or malware on the website.

3. Untrustworthy-looking content

Aggressive subject lines, too many links, too little text or unnecessary attachments can trigger filters.

4. A domain that is too new

Newly launched domains often go through an initial period of lower trust.

5. Using standard accounts for mass sending

Hosting email is designed for regular communication, not for large campaigns.

Steps to improve deliverability

1. Review domain authentication

Make sure these records exist and are correctly configured:

• SPF
• DKIM
• DMARC

2. Use authenticated SMTP

If your website sends messages, use authenticated SMTP instead of less reliable methods.

3. Take care of the content

Try to make your emails:

• Use a clear subject line
• Sound natural
• Avoid too many caps and punctuation marks
• Include only the links that are really needed

4. Review forms and website security

An unprotected form can send spam without you noticing and damage your domain reputation.

5. Encourage real interaction

When recipients reply, add you to contacts or mark the email as Not spam, it helps build trust.

Useful tips

1. Do not buy email lists

   They often lead to bounces, complaints and reputation problems.

2. Clean up accounts and passwords

   Review old mailboxes, change weak passwords and remove access you no longer need.

3. Use external testing tools

   Mail-Tester and similar services help detect weak points.

4. Take it slowly with new domains

   Start with low volume and grow gradually.

Frequently asked questions

Do SPF and DKIM guarantee inbox delivery

No, not completely, but they strongly improve the domain’s technical trust.

Why do only Gmail or Outlook send my emails to spam

Each provider uses different filters. That is why the issue may appear on some services but not others.

Should I use hosting email for mass newsletters

It is not ideal. For high volume, specialized tools are usually a better fit.

Conclusion

When your emails go to spam, authentication, reputation, content and security are usually involved.

If you improve those four areas, deliverability often increases noticeably and your messages have a better chance of reaching the right inbox.