Email is one of the most important tools for any business, but sometimes messages don’t arrive where they should. Maybe your client didn’t receive your invoice, or a customer never got your reply. Email delivery problems can be frustrating — but the good news is that most issues can be identified and solved fairly quickly.
In this article, we’ll cover the most common reasons why emails fail to send or get marked as spam, and we’ll guide you through troubleshooting steps you can take using your MWD Hosting account.
Step 1: Check Your Internet Connection and Login Details
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Make sure your device is connected to the internet.
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If you’re using Outlook, Thunderbird, or another mail client, double-check that you entered the correct email address and password.
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In cPanel, you can always verify your login details under Email Accounts.
Step 2: Verify Email Client Settings
Incorrect SMTP, IMAP, or POP3 settings are one of the most common causes of failed email delivery.
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Incoming Mail Server:
mail.yourdomain.com -
Outgoing Mail Server:
mail.yourdomain.com -
IMAP Port: 993 (SSL)
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POP3 Port: 995 (SSL)
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SMTP Port: 465 (SSL) or 587 (TLS)
Make sure you are using SSL/TLS for secure connections.
Step 3: Check Your Mailbox Quota
Every email account has a storage quota. If your inbox is full, new messages will bounce back to senders.
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Log in to cPanel.
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Go to Email Accounts.
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Check the storage usage of your mailbox.
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If it’s full, delete old emails or increase the quota.
Step 4: Review Email Logs
Email logs can provide clues about failed messages.
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In cPanel, go to Track Delivery.
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Search for the recipient’s email address.
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Check whether the message was accepted, deferred, or rejected.
Step 5: Avoid Spam Filters
Sometimes your email is delivered but lands in the recipient’s spam folder. To reduce this risk:
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Use a professional “From” address (e.g.,
yourname@yourdomain.com, not free Gmail or Yahoo). -
Don’t include spammy words like “FREE!!!” or “100% GUARANTEE” in subject lines.
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Set up SPF, DKIM, and DMARC records in DNS for your domain. These tell recipient servers that your email is authentic.
Step 6: Check for Blacklist Issues
If your server’s IP address is blacklisted, your emails may be blocked.
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Use online tools like MXToolbox to check blacklist status.
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If blacklisted, contact MWD Hosting support — we can help resolve the issue.
Step 7: Test Email Delivery
You can test deliverability by sending a message to tools like Mail-Tester.com.
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It will analyze your email and give you a score out of 10.
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If you score low, it will provide specific suggestions for improving deliverability.
Tips to Keep Your Email Healthy
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Always use strong passwords for email accounts.
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Regularly clean up old or unused mailboxes.
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Don’t send bulk marketing emails directly through cPanel email — use a proper email marketing platform.
Conclusion
Email delivery issues can seem complicated, but by checking settings, quotas, logs, and authentication records, you can solve most problems yourself. If you’ve tried all the steps above and emails are still not working, don’t hesitate to reach out to MWD Hosting Support — we’re here to help.