# Fetch all user's emails using admin credentials

**URL:** <https://devforum.zoom.us/t/fetch-all-users-emails-using-admin-credentials/116606>\
**Category:** API and Webhooks\
**Tags:** api\
**Created:** [August 29, 2024, 11:50am UTC](https://devforum.zoom.us/t/fetch-all-users-emails-using-admin-credentials/116606 "2024-08-29T11:50:07Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![nilesh1](https://avatars.discourse-cdn.com/v4/letter/n/b487fb/32.png) [@nilesh1](https://devforum.zoom.us/u/nilesh1)\
**Post date:** [August 29, 2024, 11:50am UTC](https://devforum.zoom.us/t/fetch-all-users-emails-using-admin-credentials/116606/1 "2024-08-29T11:50:07Z")

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Hi,  
I am trying to fetch other users mailbox using _[https://api.zoom.us/v2/emails/mailboxes/](https://api.zoom.us/v2/emails/mailboxes/)\<zmail\_id\>/messages_.

I am using a Server-to-server application’s access token. And I observed that to access a user’s email messages I have to use access token of that user’s app.

But how can I get all user’s mails from using a master/admin user’s credentials?

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**Author:** ![elisa.zoom](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/elisa.zoom/32/47836_2.png) [@elisa.zoom](https://devforum.zoom.us/u/elisa.zoom)\
**Post date:** [August 30, 2024, 4:15pm UTC](https://devforum.zoom.us/t/fetch-all-users-emails-using-admin-credentials/116606/2 "2024-08-30T16:15:34Z")

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Hi @nilesh1  
Thanks for reaching out to us!  
Are you getting any error when calling this endpoint. using a Server to Server Oauth token? or what are you getting back in your response?

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**Author:** ![nilesh1](https://avatars.discourse-cdn.com/v4/letter/n/b487fb/32.png) [@nilesh1](https://devforum.zoom.us/u/nilesh1)\
**Post date:** [September 2, 2024, 5:19am UTC](https://devforum.zoom.us/t/fetch-all-users-emails-using-admin-credentials/116606/3 "2024-09-02T05:19:10Z")

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Hi @elisa.zoom,

I am getting 403 with message -  
{  
“code”: 750020,  
“message”: “Open API Gateway Rewrite Error, Please Config Field Mapping”  
}.

Scenario: when giving zmail id of User B(Admin) and using access token of User A (Account owner).

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**Author:** ![elisa.zoom](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/elisa.zoom/32/47836_2.png) [@elisa.zoom](https://devforum.zoom.us/u/elisa.zoom)\
**Post date:** [September 10, 2024, 6:11pm UTC](https://devforum.zoom.us/t/fetch-all-users-emails-using-admin-credentials/116606/4 "2024-09-10T18:11:24Z")

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Hi @nilesh1  
Sorry for the late reply here!  
I was able to replicate this issue on my end and this is intended!  
You can only retrieve mailboxes using a User level app

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**Author:** ![system](https://us1.discourse-cdn.com/flex016/uploads/zoomdeveloper/original/3X/6/1/614bdd549b610bbaa46ff934617683a02bdaa03c.png) [@system](https://devforum.zoom.us/u/system)\
**Post date:** [September 14, 2025, 9:48am UTC](https://devforum.zoom.us/t/fetch-all-users-emails-using-admin-credentials/116606/5 "2025-09-14T09:48:22Z")

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Closed on September 14, 2025, 9:48am UTC

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