Why is Yahoo Mail not sending emails?-(Easy Ways to Fix!)

When your Yahoo Mail isn’t sending emails, it can be frustrating and disruptive. Several potential issues can cause this problem, ranging from technical glitches to account-related concerns. This comprehensive guide will help you identify the common reasons why your Yahoo Mail might not be sending emails and offer solutions to fix these issues.

If your Yahoo Mail isn’t sending emails, it could be due to internet issues, browser problems, or account security settings. For further assistance, call Yahoo support at 1-888-560-3111.

1. Internet Connection Issues

Cause: An unstable or weak internet connection can prevent your emails from being sent.


  • Ensure you have a stable internet connection. Try accessing other websites to confirm.
  • Restart your router or switch to a different network to see if the issue persists.

2. Browser Problems

Cause: Sometimes, the web browser you’re using might have issues that interfere with Yahoo Mail.


  • Clear your browser’s cache and cookies. This can often resolve temporary issues.
  • Try accessing Yahoo Mail in a different browser (e.g., if you’re using Chrome, try Firefox or Edge).
  • Ensure your browser is up to date. Older versions may not support all Yahoo Mail functionalities.

3. Yahoo Mail Server Issues

Cause: Yahoo Mail servers might be experiencing downtime or maintenance, affecting email sending capabilities.


  • Check the status of Yahoo Mail servers. You can visit websites like Downdetector to see if there are widespread issues.
  • Wait and try sending your email later if there is a server problem.

4. Email Size Limits

Cause: Yahoo Mail has a size limit for emails, including attachments. Exceeding this limit can prevent emails from being sent.


  • Check the size of your email and attachments. Yahoo Mail has a 25 MB limit for attachments.
  • If your email exceeds this size, consider compressing the files or using a file-sharing service like Google Drive or Dropbox.

5. Incorrect Email Settings

Cause: Incorrect SMTP settings or configuration issues can prevent your emails from being sent.


  • Verify your email settings. Ensure that your SMTP server settings are correct. For Yahoo Mail, the SMTP server is smtp.mail.yahoo.com, the port is 465 or 587, and SSL is required.
  • Check your Yahoo Mail account settings and ensure everything is configured correctly.

6. Account Security Issues

Cause: If Yahoo detects unusual activity on your account, it may temporarily block outgoing emails to protect your account.

Is there an issue with Yahoo Mail right now?

As of now, there are no widespread reports indicating that Yahoo Mail is experiencing significant outages or issues. Some users have reported isolated problems such as login issues and trouble receiving verification codes, but these do not seem to be affecting the service universally​ (Is The Service Down?)​​ ([Down For Everyone Or Just Me]​. If you are encountering difficulties with Yahoo Mail, you may want to check common troubleshooting steps such as clearing your browser cache, trying a different browser, or checking your internet connection. Additionally, you can visit websites like “Is The Service Down?” or “Down for Everyone or Just Me” to see if others are reporting similar issues​.


  • Check for any security alerts in your Yahoo account. Follow any steps provided to secure your account.
  • Change your Yahoo Mail password and enable two-factor authentication for added security.

7. Spam Filters and Email Block Lists

Cause: Your email might be flagged as spam or blocked by the recipient’s email provider.


  • Avoid using spammy language or excessive links in your emails.
  • Check if your email address is on any blocklists by using tools like MXToolbox.
  • Ask your recipient to check their spam or junk folder.

8. Outdated Yahoo Mail App

Cause: Using an outdated version of the Yahoo Mail app on your mobile device can cause issues.


  • Update the Yahoo Mail app to the latest version from your device’s app store.
  • If updating doesn’t help, try uninstalling and reinstalling the app.

9. Browser Extensions or Add-ons

Cause: Certain browser extensions or add-ons can interfere with Yahoo Mail’s functionality.


  • Disable browser extensions one by one to identify if any are causing the issue.
  • Try sending an email in a private or incognito window to see if an extension is the problem.

10. Third-Party Email Clients

Cause: If you’re using a third-party email client (like Outlook or Apple Mail), incorrect configurations can prevent sending emails.


  • Double-check the email client’s settings. Make sure the SMTP server settings match those provided by Yahoo.
  • Ensure that your email client is updated to the latest version.

11. Temporary Yahoo Mail Glitches

Cause: Temporary glitches within Yahoo Mail can sometimes occur.


  • Log out of your Yahoo Mail account and then log back in.
  • Restart your computer or device.

12. Email Account Limits

Cause: Yahoo Mail has sending limits to prevent spam. If you exceed these limits, you may be temporarily blocked from sending emails.


  • If you’ve sent a large number of emails recently, wait for 24 hours and try again.
  • Review Yahoo’s sending limits and ensure you stay within these limits in the future.

13. Inactive Account

Cause: An inactive Yahoo Mail account may have restrictions placed on it.


  • Regularly log in and use your Yahoo Mail account to keep it active.
  • If your account has been inactive for a long time, contact Yahoo Support for assistance.

14. Email Drafts

Cause: Issues with the draft email feature can sometimes cause problems when sending emails.


  • Save your email as a draft, then reopen the draft and try sending it again.
  • Copy the email content, create a new email, and paste the content to send it.

15. Yahoo Mail Support

Cause: If you’ve tried all the above solutions and still can’t send emails, there may be a more complex issue at play.


  • Contact Yahoo Mail Support for further assistance. They can provide specific guidance and help resolve more complex issues.

By systematically addressing these potential causes, you can identify and resolve the issue preventing your Yahoo Mail from sending emails. Regular maintenance, such as keeping your browser and apps updated, monitoring your account activity, and following Yahoo’s guidelines, can help prevent these problems from occurring in the future.

Why is my Yahoo Mail not being delivered?

1. Why are my Yahoo Mail emails not being delivered?

There are several reasons why your emails might not be delivered:

  • Incorrect Email Address: Ensure that the recipient’s email address is correct.
  • Spam Filters: Your email may be flagged as spam by the recipient’s email service.
  • Server Issues: Yahoo Mail servers might be experiencing temporary issues.
  • Attachment Size: Large attachments might exceed the size limit.
  • Blocked Address: Your email address might be blocked by the recipient.

2. What should I do if my email is marked as spam?

  • Avoid Spam Triggers: Refrain from using spammy words and excessive links.
  • Request Whitelisting: Ask the recipient to add your email address to their contacts.
  • Check Spam Folder: Inform the recipient to check their spam folder for your email.

3. How can I check if Yahoo Mail servers are down?

  • Status Websites: Visit websites like [DownDetector] [Is The Service Down?]to check for reported outages.
  • Yahoo Help: Check the [Yahoo Mail Help]page for any service announcements.

4. What should I do if I suspect a server issue?

  • Wait and Retry: If there is a known server issue, wait for some time and try resending the email.
  • Use Alternative Methods: Use another email service temporarily if the issue persists.

5. What are the email attachment size limits for Yahoo Mail?

Yahoo Mail has a limit of 25 MB per email, including attachments. If your email exceeds this limit, consider using a file-sharing service.

6. Why might my email address be blocked by the recipient?

  • Unintended Spam: If your previous emails were flagged as spam, your address might be blocked.
  • Manual Block: The recipient may have manually blocked your address.

7. How can I resolve issues with blocked email addresses?

  • Contact Recipient: Reach out to the recipient via another communication method and request unblocking.
  • Check Email Content: Ensure your emails adhere to best practices to avoid being flagged as spam.

8. What if my email is delayed but eventually delivered?

  • Server Delays: Sometimes, server delays can cause emails to be delivered late.
  • Check for Delays: If delays persist, check the status of Yahoo Mail servers.

9. Can Yahoo Mail support help with email delivery issues?

Yes, if the problem persists, you can contact Yahoo Mail support for further assistance. Visit the [Yahoo Help] page and navigate to the “Contact Us” section.

By following these steps, you can troubleshoot and resolve common issues that might prevent your Yahoo Mail emails from being delivered.