Many users encounter the problem of their emails being flagged as spam. This can happen for several reasons, ranging from the originating domain name being on a blacklist to the recipient mail server demanding additional validation. In this guide, we’ll explore why this occurs and how to address it.
Your Domain Has Been Added To A Blacklist.
Your domain has been placed on a blacklist, which may result in email delivery problems. To verify if your domain is blacklisted, utilize tools such as MX Toolbox. Should your domain be listed, it’s imperative to promptly identify and address the underlying issue to prevent your emails from being flagged as spam.
Your Server’s IP Address Has Been Added To A Blacklist
When your server’s IP address is blacklisted, the recipient mailbox might classify your message as spam. This issue frequently arises in shared hosting environments where your IP address is shared among multiple users. At Halls Hosting, we employ a premium SMTP relay service called MailChannels to route all emails, preventing delivery problems and spam markings caused by blacklisted IP addresses.
The Recipient Mail Host Demands Further Validation
he recipient mail host may necessitate further validation, such as verifying the presence of SPF or DKIM records for your domain. To diagnose whether this is the reason behind your emails being flagged as spam, consider using online tools like Mail Tester or Experte’s Spam Checker.
The Recipient Email Host Applies Custom Anti-Spam Filters
Custom anti-spam filters implemented by the recipient’s email host may also result in the rejection of an email based on its content, including the subject, body, and attachments. To resolve this issue, the recipient should take steps to ensure that the email contents are no longer filtered.
Understanding The Reasons Behind Why a Message Has Been Flagged
If you remain uncertain about why your emails are being flagged as spam, consider requesting the recipient to share the email headers for the received email. When submitting a support ticket regarding your outbound messages being marked as spam by a third party, ensure that you provide essential email details, including the sender, recipient, subject, and timestamp. Additionally, include the email headers to facilitate our diagnosis of the reasons behind the message being categorized as spam.
Please be aware that not all providers store comprehensive information within the email headers themselves, and in some cases, further inquiries may need to be directed to the third-party or recipient provider for additional insights.
Utilizing Mail-Tester.com
Mail Tester is an online service that offers a comprehensive analysis of your emails. It examines potential issues that could result in your emails being flagged as spam, including problems with SPF records, DKIM signatures, and content. To utilize Mail Tester:
- Visit the Mail Tester website.
- Receive a temporary email address. Send a test email to this address.
- Return to the Mail Tester website and click on Then check your score.
- You’ll receive a score out of 10 and a detailed email report.
- The report will indicate whether any issues relate to SPF authentication.
- Note: When using mail-tester.com, ensure that you include valid content in your test email to avoid negative impacts on the score due to missing or spam-related content.
By using Mail Tester, you can gain insights into why your emails might be marked as spam and take steps to enhance your email deliverability. Understanding the reasons behind spam markings and implementing appropriate solutions can reduce the likelihood of your messages being incorrectly categorized as spam.