> ## Documentation Index > Fetch the complete documentation index at: https://www.vobiz.ai/docs/llms.txt > Use this file to discover all available pages before exploring further. # Delete an opt-out > Removes a phone number from your opt-out list for one channel, so you can message it again on that channel. Do this only after the contact has given consent again, for example after they reply `START`. ## OpenAPI ````yaml openapi-sms.yaml DELETE /opt-outs/{phoneNumber} openapi: 3.0.3 info: title: Vobiz Messaging API description: > Send and receive SMS, MMS and RCS messages, buy messaging numbers, register for US 10DLC and toll-free, run broadcasts, manage conversations, opt-outs and webhooks. **Base URL:** `https://api.vobiz.ai/api/v1/sms` **Authentication:** every request needs the `X-Auth-ID` and `X-Auth-Token` headers. The account is taken from your credentials; you never put an account ID in a path or body. Field names in this API are camelCase. version: '1.0' contact: email: support@vobiz.ai url: https://vobiz.ai servers: - url: https://api.vobiz.ai/api/v1/sms description: Production security: - AuthID: [] AuthToken: [] tags: - name: Messages description: Send messages and inspect their delivery state. - name: Numbers description: >- Messaging-capable numbers on your account, inventory search, purchase and release. - name: Coverage description: Where you can send, per country. - name: Conversations description: Two-way threads between one of your numbers and a contact. - name: Opt-outs description: Numbers that must not receive messages on a channel. - name: Webhooks description: Subscriptions that deliver message and broadcast events to your server. - name: Broadcasts description: Bulk sends from an uploaded recipient list. - name: RCS Senders description: RCS sender (agent) identities and their message templates. - name: 10DLC Brands description: US 10DLC brand registration. - name: 10DLC Campaigns description: US 10DLC campaigns, toll-free verification and supporting documents. paths: /opt-outs/{phoneNumber}: delete: tags: - Opt-outs summary: Delete an opt-out description: >- Removes a phone number from your opt-out list for one channel, so you can message it again on that channel. Do this only after the contact has given consent again, for example after they reply `START`. The response is `200` whether or not a record existed, so it is safe to retry. Removing an opt-out on one channel leaves entries on other channels in place; delete each one separately. operationId: delete-opt-out parameters: - name: phoneNumber in: path required: true description: >- The number in E.164 format, for example `+14155550123`. In raw HTTP requests, URL-encode the `+` as `%2B` (`/opt-outs/%2B14155550123`); the SDKs encode it for you. schema: type: string example: '+14155550123' - name: channel in: query description: >- Channel to remove the opt-out from: `sms`, `mms` or `rcs`. Defaults to `sms`. schema: type: string default: sms example: sms responses: '200': description: The number is unblocked on that channel. content: application/json: schema: $ref: '#/components/schemas/StatusOk' example: status: ok '401': $ref: '#/components/responses/Unauthorized' '500': $ref: '#/components/responses/ServerError' x-codeSamples: - lang: typescript label: Node SDK source: > import { VobizClient } from "@vobiz/sdk"; const client = new VobizClient({ apiKey: "MA_XXXXXXXX", authToken: "YOUR_AUTH_TOKEN" }); await client.sms.optOuts.deleteOptOut({ phoneNumber: "+14155550123", channel: "sms" }) - lang: python label: Python SDK source: | from vobiz import Vobiz client = Vobiz(api_key="MA_XXXXXXXX", auth_token="YOUR_AUTH_TOKEN") client.sms.opt_outs.delete_opt_out( phone_number="+14155550123", channel="sms", ) - lang: go label: Go SDK source: | import ( "context" vobiz "github.com/vobiz-ai/Vobiz-Go-SDK" "github.com/vobiz-ai/Vobiz-Go-SDK/client" "github.com/vobiz-ai/Vobiz-Go-SDK/option" "github.com/vobiz-ai/Vobiz-Go-SDK/sms" ) c := client.NewClient( option.WithAPIKey("MA_XXXXXXXX"), option.WithAuthToken("YOUR_AUTH_TOKEN"), ) request := &sms.DeleteOptOutRequest{ PhoneNumber: "+14155550123", Channel: vobiz.String( "sms", ), } c.Sms.OptOuts.DeleteOptOut( context.TODO(), request, ) - lang: java label: Java SDK source: | import com.vobiz.api.VobizApiClient; VobizApiClient client = VobizApiClient .builder() .apiKey("MA_XXXXXXXX") .authToken("YOUR_AUTH_TOKEN") .build(); client.sms().optOuts().deleteOptOut( "+14155550123", DeleteOptOutRequest .builder() .channel("sms") .build() ); - lang: ruby label: Ruby SDK source: > require 'vobiz' client = Vobiz::Client.new(api_key: 'MA_XXXXXXXX', auth_token: 'YOUR_AUTH_TOKEN') client.sms.opt_outs.delete_opt_out( phone_number: "+14155550123", channel: "sms" ) - lang: csharp label: C# SDK source: | using Vobiz; using Vobiz.Sms; var client = new VobizApiClient("YOUR_AUTH_TOKEN", "MA_XXXXXXXX"); await client.Sms.OptOuts.DeleteOptOutAsync( new DeleteOptOutRequest { PhoneNumber = "+14155550123", Channel = "sms" } ); - lang: php label: PHP SDK source: > sms->optOuts->deleteOptOut( '+14155550123', new DeleteOptOutRequest([ 'channel' => 'sms', ]), ); components: schemas: StatusOk: type: object properties: status: type: string example: ok description: Always `ok` when the action succeeded. description: >- Confirmation returned by actions that have no resource to return, such as marking a conversation read or creating or deleting an opt-out. Error: type: object description: >- The body of every error response: a flat object with one `error` string that explains what went wrong. Use the HTTP status code to decide how to handle the error, and log `error` for diagnosis. required: - error properties: error: type: string example: 'recipient has opted out: +14155550123' description: >- Human-readable explanation of the error, for example `phoneNumber is required` or `recipient has opted out: +14155550123`. Branch on the HTTP status code rather than on this text. responses: Unauthorized: description: Missing or invalid `X-Auth-ID` / `X-Auth-Token`. content: application/json: schema: $ref: '#/components/schemas/Error' example: error: missing or invalid credentials ServerError: description: Unexpected error. Retry with the same idempotency key where one applies. content: application/json: schema: $ref: '#/components/schemas/Error' example: error: internal error securitySchemes: AuthID: type: apiKey in: header name: X-Auth-ID description: Your Vobiz account Auth ID (`MA_XXXXXXXX`). AuthToken: type: apiKey in: header name: X-Auth-Token description: Your Vobiz account Auth Token. ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.