# Managing personal message participants
**URL:** https://meta.discourse.org/t/managing-personal-message-participants/229163
**Category:** Support
**Tags:** personal-messages
**Created:** [June 6, 2022, 2:53pm UTC](https://meta.discourse.org/t/managing-personal-message-participants/229163 "2022-06-06T14:53:16Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@rikmarais](https://meta.discourse.org/u/rikmarais)
#### Post date: [June 6, 2022, 2:53pm UTC](https://meta.discourse.org/t/managing-personal-message-participants/229163/1 "2022-06-06T14:53:16Z")
I’d like to find out if there is any mechanism to configure a private message topic to prevent the target recipients from inviting additional users or removing themselves from the private message topic.
I’ve been trying to create a system-managed private message topic where I use API calls to automatically invite/remove Discourse users based on their membership in an external group.
When a new external user joins the external group, their corresponding Discourse user gets invited to the managed private message topic. When the external user leaves the external group, they are removed.
However, I cannot prevent an invited user from inviting others through Discourse or removing themselves from the private message, so I cannot strictly manage private message participants.
Could I be missing something, or is it not possible to manage private message participants in this way?
Thanks for your help!
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### Author:  [@JammyDodger](https://meta.discourse.org/u/JammyDodger)
#### Post date: [September 10, 2023, 7:31am UTC](https://meta.discourse.org/t/managing-personal-message-participants/229163/2 "2023-09-10T07:31:31Z")
I’m afraid this is currently not possible, but there is an open #Contribute > Feature request discussing the issue here:
> [@Prevent adding additional users to personal messages?](https://meta.discourse.org/t/prevent-adding-additional-users-to-private-messages/255868):
>
> Hi there. I’m seeing concerns from users about the ability to add additional users to a personal message topic who can then see the entire message thread, resulting in a possible intentional or unintentional doxing if somebody posted private information earlier in the thread. The expected behavior for these users is that added users would only be able to view the personal message topic from the point where they were added. This sounds ideal to me too, but hard to implement from the Discourse po…
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### Author:  [@JammyDodger](https://meta.discourse.org/u/JammyDodger)
#### Post date: [September 10, 2023, 7:32am UTC](https://meta.discourse.org/t/managing-personal-message-participants/229163/3 "2023-09-10T07:32:00Z")