If your business is sending application-to-person (A2P) text messages using 10-digit long code (10DLC) numbers in the US, you're required to register for 10DLC in order to avoid fees and penalties from mobile network operators. In this guide, we'll show you how to complete the second step of this process by registering campaigns, using tools provided in the Telnyx Mission Control Portal.


Every campaign must be associated with a brand. If you haven't already registered your brand, you'll need to do that before you can activate a campaign and send messages. Follow this guide to complete this first step before moving onto creating a campaign.

Additionally, you will want to ensure that your brand has a good Trust Score, as A2P 10DLC message throughput is determined based on your Trust Score and your Campaign Use Case. Learn more on throughput and Trust Scores in this article.

Creating a 10DLC campaign in the Mission Control Portal

Once you’ve created a Business Brand in Mission Control Portal, head to the Messaging section and then to the 10DLC Campaigns tab. From here, you can get started on creating a campaign.

Creating a 10DLC campaign using the Telnyx API

If you'd prefer to create your brand using a simple API command, you can find details in our API reference documentation.

Information you'll need to register your 10DLC campaigns

A campaign contains information about the messages you intend to send. You'll be asked for the following information when registering a 10DLC campaign.




The 10DLC brand you want to associate this campaign with.

Use case

The use case that best matches your campaign:

  • Two Factor Authentication

  • Alerts/Notifications

  • Agents and Franchises

  • Carrier Exemptions

  • Charity

  • Conversational Messaging

  • Customer Care

  • Delivery Notifications

  • Emergency Alerts

  • Fraud Alerts

  • Education

  • Marketing

  • Political

  • Polling/Voting

  • Public Service Announcements

  • Security

  • Social

  • Sole Proprietor

  • Sweepstakes

Messages sent that do not align with your registered use case may be subject to fines and throughput limitations.


The industry vertical which best matches your business.

Campaign description

The name or description of your campaign.

Sample messages

Sample content that represents the messages you plan to send to end users. You may add multiple sample messages.

Messages sent that do not align with the registered sample message can be flagged for review.

Campaign and content attributes

Indicate which content attributes you will or will not be providing:

  • Subscriber opt-in

  • Subscriber opt-out

  • Subscriber help

  • Number pooling

  • Direct lending or loan arrangement

  • Embedded link

  • embedded phone number

  • Affiliate marketing

  • Age-gated content

Message Flow

The customers need to add information of how the users opt in to the campaign.

Example: The users visit the website and add their phone number to agree receiving the messages.

Opt-in Keywords

The opt in keywords the users need to text in order to start receiving messages from the campaign.

If your campaign does not support opt-in keywords, you do not need to provide this.

Opt-in Message

If your campaign supports opt-in keywords to start receiving messages from this campaign, you need to provide the auto response that will be sent to the end users when they opt in. The opt-in response should include the Brand name, confirmation of the opt-in process for recurring messages from the campaign, how to get help, and opt-out language.

Example: “Your Brand: You have been opted-in. For help, reply HELP. Reply STOP to opt-out".

If you do not support opt-in messages, you do not need to provide this.

Opt-out Keywords

Provide the keywords the users need to text in order to stop receiving messages from the campaign. Those keywords must be provided as part of the campaign registration process.

Opt-out Message

The auto response that will be sent to the end users when they opt-out in order to confirm that no further messages will be sent from your campaign to their numbers.

Example: "You have successfully been unsubscribed from Your Brand. You will not receive any more messages from this number."

Help Keywords

The end users should be able to text in a keyword to receive help. Those keywords must be provided as part of the campaign registration request.

Example keyword: HELP

Help Message

The auto response that will be sent to the end users when they send the HELP keyword.

Example: “Your Brand. Please visit www.yourbrand.com/help to get support. To opt-out, reply STOP.""

Length requirements introduced to data fields


Min lenght

Max lenght

Campaign description



Help message



Message Flow



Opt in Message



Opt out Message



Opt-in Keywords


Opt-out Keywords


Help Keywords


Next steps after registering your campaign

The next step after you’ve registered your campaign is to assign numbers to it.

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