Title: Zoho Mail Addon – Code 400 Error
Last modified: July 22, 2023

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# Zoho Mail Addon – Code 400 Error

 *  Resolved [Jamie](https://wordpress.org/support/users/tgjamie45/)
 * (@tgjamie45)
 * [2 years, 10 months ago](https://wordpress.org/support/topic/zoho-mail-addon-code-400-error/)
 * Hello, I have just purchased the Zoho Mail addon. I set it all up and seemed 
   to be working ok. But then it stopped and so I reset everything. I am using the
   Zoho Mail API connection and now whenever I send a test message I get the following
   error message: 
   Code: 400, Message: Bad Request, Body: {“data”:{“errorCode”:”
   INVALID_TICKET”,”moreInfo”:”Invalid ticket”},”status”:{“code”:400,”description”:”
   Invalid Input”}}
 * I have troubleshooted this over and over and I can’t find out where the issue
   could be or why as my setup was the same as when it was first working? Is there
   any direction as to what might be causing this?

Viewing 4 replies - 1 through 4 (of 4 total)

 *  [smakazmi15](https://wordpress.org/support/users/smakazmi15/)
 * (@smakazmi15)
 * [2 years, 10 months ago](https://wordpress.org/support/topic/zoho-mail-addon-code-400-error/#post-16916981)
 * Hi @tgjamie45,
 * I hope you are doing well. Please [create a ticket on our technical support channel](https://objectsws.atlassian.net/servicedesk/customer/portal/16)
   so that we can connect you directly with our Technical team.
 * Looking forward to getting your issue resolved.
   Thanks and regards,Support Team–
   WPExperts
 *  [smakazmi15](https://wordpress.org/support/users/smakazmi15/)
 * (@smakazmi15)
 * [2 years, 10 months ago](https://wordpress.org/support/topic/zoho-mail-addon-code-400-error/#post-16935224)
 * Hi [@tgjamie45](https://wordpress.org/support/users/tgjamie45/) ,
 * I hope you are doing well.
 * It’s just a follow-up about your issue. Has your issue been resolved?
   Waiting
   for your response.
 * Thanks and regards,
   Support Team – WPExperts
 *  Thread Starter [Jamie](https://wordpress.org/support/users/tgjamie45/)
 * (@tgjamie45)
 * [2 years, 10 months ago](https://wordpress.org/support/topic/zoho-mail-addon-code-400-error/#post-16935862)
 * Hi [@smakazmi15](https://wordpress.org/support/users/smakazmi15/) so overall 
   I’ve not been able to get it to work with the API connection process. However,
   through simple SMTP I realised I needed to generate an app specific password 
   for Post SMTP. So now it is working and honestly, I don’t have the time to troubleshoot
   the API process. So lets just wrap this as closed. However, of course I don’t
   know if it really works or not or is fixed. Key for me is, mails are flowing.
   Thanks
 *  [smakazmi15](https://wordpress.org/support/users/smakazmi15/)
 * (@smakazmi15)
 * [2 years, 10 months ago](https://wordpress.org/support/topic/zoho-mail-addon-code-400-error/#post-16944117)
 * Hi [@tgjamie45](https://wordpress.org/support/users/tgjamie45/),
 * I hope you are doing well.
 * Thanks for updating us.
 * Thanks and regards,
   Support Team – WPExperts

Viewing 4 replies - 1 through 4 (of 4 total)

The topic ‘Zoho Mail Addon – Code 400 Error’ is closed to new replies.

 * ![](https://ps.w.org/post-smtp/assets/icon-128x128.gif?rev=3209655)
 * [Post SMTP – Complete Email Deliverability and SMTP Solution with Email Logs, Alerts, Backup SMTP & Mobile App](https://wordpress.org/plugins/post-smtp/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/post-smtp/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/post-smtp/)
 * [Active Topics](https://wordpress.org/support/plugin/post-smtp/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/post-smtp/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/post-smtp/reviews/)

 * 4 replies
 * 2 participants
 * Last reply from: [smakazmi15](https://wordpress.org/support/users/smakazmi15/)
 * Last activity: [2 years, 10 months ago](https://wordpress.org/support/topic/zoho-mail-addon-code-400-error/#post-16944117)
 * Status: resolved