# Double opt In
Allow option for double opt-in.
## Creating a customer account with double opt-in
> Creates a customer account using the token obtained through double opt-in.\
> \
> \*\*Note\*\*: The request needs to be authorized with an anonymous access token.
```json
{"openapi":"3.0.0","info":{"title":"Customer Service (customer-managed)","version":"0.0.1"},"tags":[{"name":"Double opt-in","description":"Allow option for double opt-in."}],"servers":[{"url":"https://api.emporix.io"}],"security":[{"AnonymousAccessToken":[]}],"components":{"securitySchemes":{"AnonymousAccessToken":{"type":"http","scheme":"bearer","description":"To generate an anonymous token, check out the 'Requesting an anonymous token' endpoint."}},"schemas":{"CustomerToken":{"description":"","type":"object","allOf":[{"$ref":"#/components/schemas/RefreshCustomerToken"}],"properties":{"saasToken":{"type":"string","minLength":1,"deprecated":true},"saas_token":{"type":"string","minLength":1},"initialPassword":{"type":"string","description":"Indicates if login was performed with password created by an employee"}}},"RefreshCustomerToken":{"description":"","type":"object","properties":{"accessToken":{"type":"string","minLength":1,"deprecated":true},"expiresIn":{"type":"number","format":"int32","deprecated":true},"refreshToken":{"type":"string","minLength":1,"deprecated":true},"refreshTokenExpiresIn":{"type":"number","format":"int32","deprecated":true},"access_token":{"type":"string","minLength":1},"expires_in":{"type":"number","format":"int32"},"refresh_token":{"type":"string","minLength":1},"refresh_token_expires_in":{"type":"number","format":"int32"},"token_type":{"type":"string"},"session_id":{"type":"string"}}},"ErrorMessage":{"title":"","description":"Schema for API-specific errors.","type":"object","properties":{"status":{"minimum":100,"maximum":599,"description":"Original HTTP error code. It should be consistent with the HTTP response code.","type":"integer"},"type":{"pattern":"[a-z]+[a-z_]*[a-z]+","description":"Classification of the error type.\n**Note:** The error type should be written in lowercase and include underscores, for example `validation_failure`.","type":"string"},"message":{"description":"Descriptive error message for debugging purposes.","type":"string"},"moreInfo":{"type":"string","description":"More information (such as a link to the documentation) for investigating further and getting support."},"details":{"description":"List of problems causing the error.","type":"array","items":{"title":"errorDetail","description":"Specific error cause.","type":"object","properties":{"field":{"description":"Element in request data which is causing the error, for example `category.name`.\nIf the violation was not field-specific, this field will be empty.","type":"string"},"type":{"pattern":"[a-z]+[a-z_]*[a-z]+","description":"Classification of the specific error cause. This value should always be interpreted within the context of the general error type.\n**Note:** The error type should be written in lowercase and include underscores, for example `missing_value`.","type":"string"},"message":{"description":"Descriptive error message for debugging purposes.","type":"string"},"moreInfo":{"type":"string","description":"More information (such as a link to the documentation) for investigating further and getting support."}}}}}}},"responses":{"400_bad_request":{"description":"Request was syntactically incorrect. Details will be provided in the response payload.","content":{"application/json":{"schema":{"$ref":"#/components/schemas/ErrorMessage"}}}},"401_unauthorized":{"description":"Unauthorized","content":{"application/json":{"schema":{"type":"object","properties":{"fault":{"type":"object","properties":{"faultstring":{"type":"string"},"detail":{"type":"object","properties":{"errorcode":{"type":"string"}}}}}}}}}}}},"paths":{"/customer/{tenant}/signup/optin/{token}":{"get":{"operationId":"GET-customer-signup-customer-optin","responses":{"200":{"description":"OK","content":{"application/json":{"schema":{"$ref":"#/components/schemas/CustomerToken"}}}},"400":{"$ref":"#/components/responses/400_bad_request"},"401":{"$ref":"#/components/responses/401_unauthorized"}},"description":"Creates a customer account using the token obtained through double opt-in.\n\n**Note**: The request needs to be authorized with an anonymous access token.","parameters":[{"name":"token","in":"path","required":true,"description":"The token sent in email to customer during account creation.\n","schema":{"type":"string"}}],"summary":"Creating a customer account with double opt-in","tags":["Double opt-in"]}}}}
```
## Resending an account activation link to a customer
> Resends an account activation link to the customer.\
> \
> \*\*Note\*\*: The request needs to be authorized with an anonymous access token.
```json
{"openapi":"3.0.0","info":{"title":"Customer Service (customer-managed)","version":"0.0.1"},"tags":[{"name":"Double opt-in","description":"Allow option for double opt-in."}],"servers":[{"url":"https://api.emporix.io"}],"security":[{"AnonymousAccessToken":[]}],"components":{"securitySchemes":{"AnonymousAccessToken":{"type":"http","scheme":"bearer","description":"To generate an anonymous token, check out the 'Requesting an anonymous token' endpoint."}},"responses":{"400_bad_request":{"description":"Request was syntactically incorrect. Details will be provided in the response payload.","content":{"application/json":{"schema":{"$ref":"#/components/schemas/ErrorMessage"}}}},"401_unauthorized":{"description":"Unauthorized","content":{"application/json":{"schema":{"type":"object","properties":{"fault":{"type":"object","properties":{"faultstring":{"type":"string"},"detail":{"type":"object","properties":{"errorcode":{"type":"string"}}}}}}}}}}},"schemas":{"ErrorMessage":{"title":"","description":"Schema for API-specific errors.","type":"object","properties":{"status":{"minimum":100,"maximum":599,"description":"Original HTTP error code. It should be consistent with the HTTP response code.","type":"integer"},"type":{"pattern":"[a-z]+[a-z_]*[a-z]+","description":"Classification of the error type.\n**Note:** The error type should be written in lowercase and include underscores, for example `validation_failure`.","type":"string"},"message":{"description":"Descriptive error message for debugging purposes.","type":"string"},"moreInfo":{"type":"string","description":"More information (such as a link to the documentation) for investigating further and getting support."},"details":{"description":"List of problems causing the error.","type":"array","items":{"title":"errorDetail","description":"Specific error cause.","type":"object","properties":{"field":{"description":"Element in request data which is causing the error, for example `category.name`.\nIf the violation was not field-specific, this field will be empty.","type":"string"},"type":{"pattern":"[a-z]+[a-z_]*[a-z]+","description":"Classification of the specific error cause. This value should always be interpreted within the context of the general error type.\n**Note:** The error type should be written in lowercase and include underscores, for example `missing_value`.","type":"string"},"message":{"description":"Descriptive error message for debugging purposes.","type":"string"},"moreInfo":{"type":"string","description":"More information (such as a link to the documentation) for investigating further and getting support."}}}}}},"RefreshToken":{"type":"object","properties":{"email":{"type":"string","description":"Customer email address."}},"required":["email"]}}},"paths":{"/customer/{tenant}/signup/optin/refresh_token":{"post":{"operationId":"POST-customer-refresh-token","responses":{"202":{"description":"Accepted"},"400":{"$ref":"#/components/responses/400_bad_request"},"401":{"$ref":"#/components/responses/401_unauthorized"}},"requestBody":{"content":{"application/json":{"schema":{"$ref":"#/components/schemas/RefreshToken"}}},"required":true},"description":"Resends an account activation link to the customer.\n\n**Note**: The request needs to be authorized with an anonymous access token.\n","summary":"Resending an account activation link to a customer","tags":["Double opt-in"]}}}}
```
---
# Agent Instructions: Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.
Perform an HTTP GET request on the current page URL with the `ask` query parameter:
```
GET https://developer.emporix.io/api-references-1/readme/api-reference-12/double-opt-in.md?ask=
```
The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.
Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.