> For the complete documentation index, see [llms.txt](https://docs.emsigner.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.emsigner.com/apis/api-reference/authentication/account-exists-check.md).

# Account Exists Check

## POST /api/Public/CheckAccountExists/check

> Account exists check

```json
{"openapi":"3.0.1","info":{"title":"emSigner Core API","version":"v1"},"tags":[{"name":"CheckAccountExists"}],"servers":[{"url":"https://demoapi-core.emsigner.com","description":"Demo / Sandbox"},{"url":"{baseUrl}","description":"Custom environment","variables":{"baseUrl":{"default":"https://demoapi-core.emsigner.com","description":"Base URL of your emSigner environment (e.g. production or on-prem API host)"}}}],"security":[{"Bearer":[]}],"components":{"securitySchemes":{"Bearer":{"type":"http","description":"JWT access token from POST /auth/token. Paste the token without the \"Bearer \" prefix.","scheme":"bearer","bearerFormat":"JWT"}},"schemas":{"CheckAccountRequest":{"required":["emailID"],"type":"object","properties":{"emailID":{"minLength":1,"type":"string","format":"email"}},"additionalProperties":false}}},"paths":{"/api/Public/CheckAccountExists/check":{"post":{"tags":["CheckAccountExists"],"requestBody":{"content":{"application/json":{"schema":{"$ref":"#/components/schemas/CheckAccountRequest"}}}},"responses":{"200":{"description":"OK"}},"summary":"Account exists check","operationId":"post_CheckAccountExists_check"}}}}
```