# Patient Lookup within control file MESH Client

**URL:** <https://developer.community.nhs.uk/t/patient-lookup-within-control-file-mesh-client/1227>\
**Category:** Message Exchange for Social Care and Health (MESH)\
**Tags:** testing, integration\
**Created:** [24 July 2024 08:36 UTC](https://developer.community.nhs.uk/t/patient-lookup-within-control-file-mesh-client/1227 "2024-07-24T08:36:06Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![terry](https://avatars.discourse-cdn.com/v4/letter/t/b9e5f3/32.png) [@terry](https://developer.community.nhs.uk/u/terry)\
**Post date:** [24 July 2024 08:36 UTC](https://developer.community.nhs.uk/t/patient-lookup-within-control-file-mesh-client/1227/1 "2024-07-24T08:36:06Z")

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Hi Everyone,

We are looking to send letters to Multiple GPs across the country and would like to lookup the patient to retrieve the to mailbox Id is this doable? any further guidance on how this would work? I have read `https://simplifier.net/guide/gp-connect-send-document/Home/Design/Integration-with-Spine?version=1.3.2-public-beta#MESH-endpoint-lookup-service`

But would this approach adding patient details into the control message work against all workflows or just some?

Many thanks  
Terry

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**Author:** ![david.hallam4](https://avatars.discourse-cdn.com/v4/letter/d/e9bcb4/32.png) [@david.hallam4](https://developer.community.nhs.uk/u/david.hallam4)\
**Post date:** [24 July 2024 09:01 UTC](https://developer.community.nhs.uk/t/patient-lookup-within-control-file-mesh-client/1227/2 "2024-07-24T09:01:33Z")

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Hi Terry,

There is a specific list of workflows that can be used with this feature.

Best regards,

Dave

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**Author:** ![terry](https://avatars.discourse-cdn.com/v4/letter/t/b9e5f3/32.png) [@terry](https://developer.community.nhs.uk/u/terry)\
**Post date:** [24 July 2024 09:06 UTC](https://developer.community.nhs.uk/t/patient-lookup-within-control-file-mesh-client/1227/3 "2024-07-24T09:06:09Z")

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Hi David, I don’t suppose you have a list of these Workflows?

Many thanks  
Terry

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**Author:** ![david.hallam4](https://avatars.discourse-cdn.com/v4/letter/d/e9bcb4/32.png) [@david.hallam4](https://developer.community.nhs.uk/u/david.hallam4)\
**Post date:** [24 July 2024 11:20 UTC](https://developer.community.nhs.uk/t/patient-lookup-within-control-file-mesh-client/1227/4 "2024-07-24T11:20:58Z")

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Hi Terry,

Apologies. Yes, you can find the list [here](https://digital.nhs.uk/services/message-exchange-for-social-care-and-health-mesh/mesh-guidance-hub/endpoint-lookup-service-and-workflowids#using-the-to_dts-field-of-a-mesh-message-to-find-a-mailbox-).

Hope that helps.

Best regards,

Dave