In some cases, an email may bounce simply because of the content of the message, even if the recipient’s address is valid and deliverable. Many email servers use advance anti-spam filters that evaluate the content of the email, such as text, images, or links, and block messages that look suspicious or are mark as spam.
Factors that may trigger content filters include:
- Spammy language: Emails containing overly promotional language, excessive use of exclamation marks, or certain flag keywords may be reject by spam filters.
- Suspicious links or attachments: Links to websites or attachments containing malicious files may cause your email to bounce.
- Malform HTML: Poorly structure HTML emails or messages containing hidden text can trigger content filters.
Solution
Follow best practices for email phone number library content, avoiding spammy language like excessive use of exclamation points or misleading subject lines. Make sure your HTML is clean and well-structure, and use properly validate links to reduce the risk of being flag as spam. Testing your emails against popular spam filters before sending can also help catch potential issues.
Antivirus blocking
In addition to spam filters, many why it’s important to re-engage dormant custom mail servers use antivirus software to scan incoming emails for malware, viruses, or other harmful content. If your email contains attachments or links that are flagged by the antivirus system, it may be rejected before it even reaches the recipient’s inbox. This may result in a soft or hard bounce, depending on the severity of the perceived threat.
Solution
Make sure all attachments and links in your email do not contain malicious content. Use trusted sources for external links and avoid sending executable files or other potentially dangerous attachments.
Email address blocked by recipient’s server
Email servers often block afghanistan business directory messages from senders or domains with poor reputations. If your email service provider has been flagged as a spam source or your sending domain has, your emails may be automatically blocked. Whether this results in a soft or hard bounce depends on the configuration of the specific server.
Expired domain name
When a domain name expires, it means that it is no longer active and any email addresses associated with it are invalid. This often results in a hard bounce, as there is no way to send email to a domain name that doesn’t exist.
Solution
Verify the email addresses on your list regularly.