Can't send mail to yahoo vai mailgun

Frustrating!

Mailgun is a popular email service provider, and Yahoo is a well-known email provider. However, there are some known issues and limitations when sending emails from Mailgun to Yahoo. Here are some possible reasons why you might be experiencing issues:

  1. Yahoo's strict spam filters: Yahoo has very strict spam filters, which can flag emails from unknown senders or those with suspicious characteristics. Mailgun's emails might be getting caught in these filters, preventing them from reaching the intended recipient's inbox.
  2. Domain reputation: Yahoo checks the domain reputation of the sender's domain (in this case, Mailgun's domain). If Mailgun's domain has a poor reputation or is not properly configured, Yahoo might block the emails.
  3. Authentication issues: Mailgun uses SPF (Sender Policy Framework) and DKIM (DomainKeys Identified Mail) to authenticate emails. If these settings are not properly configured or are not recognized by Yahoo, the emails might be rejected or flagged as spam.
  4. Content filtering: Yahoo also checks the content of the emails, including the subject line, body, and attachments. If the content is deemed suspicious or spammy, the email might be blocked or flagged.

To resolve these issues, you can try the following:

  1. Verify your Mailgun domain: Ensure that your Mailgun domain is properly verified and configured. You can do this by following Mailgun's documentation on domain verification.
  2. Check your SPF and DKIM settings: Verify that your SPF and DKIM settings are correctly configured and published. You can use tools like SPF Checker and DKIM Checker to test your settings.
  3. Warm up your Mailgun domain: Yahoo recommends warming up your Mailgun domain by sending a small volume of emails to test the delivery. This can help improve the domain reputation and reduce the likelihood of emails being flagged as spam.
  4. Use a more specific sender domain: Instead of using Mailgun's default sender domain, try using a more specific domain that is associated with your brand or organization. This can help improve the domain reputation and reduce the likelihood of emails being flagged as spam.
  5. Monitor your Mailgun logs: Keep an eye on your Mailgun logs to identify any issues or errors that might be causing the emails to be blocked or flagged.
  6. Contact Yahoo support: If none of the above steps resolve the issue, you can contact Yahoo's support team to report the issue and ask for assistance.

Remember that Yahoo's spam filters are designed to protect users from spam and phishing attacks, so it's essential to ensure that your emails are legitimate and comply with their policies.