A2P Campaigns

A2P (Application-to-Person) Campaigns allow you to register and manage SMS messaging campaigns in the DIDWW User Panel. These campaigns are used to send messages such as alerts, notifications, and customer service responses to users. Each campaign includes sender ID details, business identity verification, and SMS trunk configuration to ensure compliant and reliable message delivery.

Choose an option below to get started:

Create A2P Campaign

Start a campaign by verifying, setting the sender ID, and choosing an SMS trunk.

Before You Begin
Edit A2P Campaign

Update campaign details, switch trunks, or remove sender IDs.

Edit A2P Campaign
Send SMS

Send individual test messages from campaigns using an HTTP OUT trunk.

Send SMS
Close A2P Campaign

Permanently close a campaign and disable its configuration.

Close A2P Campaign

Before You Begin

Before creating an A2P SMS Campaign, ensure the following requirements are met:

  • Business Identity and Address – Required for A2P Campaign registration, based on your destination country’s regulations. You can create a business identity in the Identities section.

  • Outbound SMS Trunk – Required to send SMS messages but optional during campaign creation. For the campaign to function correctly, you’ll need to assign a trunk either during setup or after creation. If you haven’t configured one yet, see the setup guide for your desired trunk type: HTTP OUT Trunk, SMPP ESME Trunk, or SMPP SMSC Trunk.

Note

You can use a DID number with A2P SMS service for campaigns in countries that support Long-code or Toll-free Sender IDs. To check availability or purchase an A2P SMS number, visit the Coverage page .


Create A2P Campaign

To start creating your A2P campaign, open the campaign creation form:

  1. Navigate to the SMS > A2P Campaigns section in the DIDWW User Panel.

  2. Click the Create New button.

SMS Campaigns page

Fig. 1 SMS Campaigns page

Step 1: Campaign Details

In the create A2P Campaign form, the first step is to complete the campaign details section:

  1. Campaign Name – Provide a descriptive name to help identify your campaign.

  2. Campaign Target Country – Select the country where SMS messages will be delivered.

  3. Sender ID Type – Choose one of the following options:

    • Long-code – Used for two-way messaging. Requires a DID number enabled for A2P SMS (e.g., 14155552671).

    • Toll-free – Ideal for customer support. Requires a toll-free DID number with A2P SMS capability (e.g., 18001234567).

    • Alphanumeric – Suitable for branded one-way messaging. Supports letters and digits (e.g., MyBrand).

    • Dynamic – Automatically replaces your Alphanumeric Sender ID with a numeric Long-Code or Short-code, based on local network rules (e.g., MyBrand → 551144501111).

    • Short-code – Uses a registered Short-code assigned to your campaign (e.g., 12345). Short-code registration may take up to one month.

  4. Review the requirements, verification time, and pricing specific to the selected target country and Sender ID type. This information will help you prepare the necessary details for the next step.

  5. Click Next to proceed to the verification details step.

Campaign details

Fig. 2 Campaign details


Step 2: Verification Details

In the verification details step, provide brand identity information and submit a completed SMS campaign form:

  1. Select your registered Business Identity and corresponding Address.

Note

If you don’t have a business identity or address yet, click Create New. Make sure the provided information matches the requirements displayed on the right side, which are based on the selected target country and Sender ID type.

  1. Download the SMS Campaign Form and complete all required fields.

  2. Upload the completed form by clicking the Select Files button.

  3. Click Next to proceed to the next step.


Verification details

Fig. 3 Verification details

To learn how to complete the US campaign form, see the guide below:

US A2P 10DLC Campaign Registration Guide

Step-by-step guide on completing the DIDWW A2P 10DLC campaign registration form for compliant messaging in the United States.

US A2P 10DLC Campaign Registration

Step 3: Sender ID Details

In this step, provide the Sender ID information based on the type selected in Step 1: Campaign Details. Depending on the selected option, you will either select DID numbers or enter the required Sender ID details for your chosen Sender ID type.

Note

A single A2P campaign can include up to 49 Sender IDs.


  1. Select the DID numbers that will be used for this campaign.

    Note

    • Active DID numbers with A2P SMS service will be displayed in the available source numbers section.

    • If a DID is already assigned to an existing A2P Campaign, it cannot be used for another campaign.

    • Only DIDs associated with the selected identity will appear as available source numbers.

  2. Move the selected DIDs to the Selected source numbers list using the left and right arrow buttons to include them in the campaign.

Select Long-Code DID Numbers

Fig. 4 Adding Long-code & Toll-free Sender IDs

  1. Once you have selected the source numbers for this A2P Campaign, click Next to continue.


  1. Enter the Alphanumeric Sender ID that will appear as the message originator (2–11 characters long, containing only a–z, A–Z, or 0–9).

  2. Click Next to continue.

    Note

    Sender ID cannot be modified after campaign submission.

Enter Alphanumeric Sender ID

Fig. 5 Adding Alphanumeric Sender ID


  1. Enter the Alphanumeric Sender ID that will be presented to your users (2–11 characters long, containing only a–z, A–Z, or 0–9).

  2. Click Next to continue.

    Note

    • Sender ID cannot be modified after campaign submission.

    • Your Sender ID will be automatically replaced with a standard numeric Long-code or Short-code, as required by the local network operator and destination country regulations. This option is designed for markets where A2P registration is mandatory and numeric senders must comply with local rules.

Dynamic Sender IDs

Fig. 6 Dynamic Sender IDs


  1. Review the information displayed for Short-code Sender IDs.

  2. Click Next to continue.

    Note

    Short-code number registration may take up to one month. Once the registration is complete, the assigned Short-code will be sent to you via email and configured on your account.

Short-Code Sender IDs

Fig. 7 Short-code Sender IDs


Step 4: Trunk Configuration

This step is optional, but it is recommended to select the Outbound SMS Trunk that will be used to send messages for this A2P campaign.

  1. Choose the SMS Trunk from the list.

  2. Click Next to proceed.

Note

If you haven’t configured a suitable trunk yet, refer to the relevant setup guide based on your trunk type: HTTP OUT Trunk, SMPP ESME Trunk, or SMPP SMSC Trunk.

SMS Trunk configuration

Fig. 8 Trunk configuration


Step 5: Summary

Review all entered campaign details and the cost for the verification process. When you’re ready, click Submit to create the A2P campaign.

Note

The Estimated verification time depends on the destination country and sender ID type.

Campaign summary

Fig. 9 Campaign summary


Edit A2P Campaign

To modify an existing A2P campaign:

  1. Go to the SMS > A2P Campaigns section in the DIDWW User Panel.

  2. Find the campaign you wish to update and click the actions Actions button button.

  3. Select Edit Campaign from the dropdown menu.

Edit campaign

Fig. 10 Edit campaign

Edit A2P Campaign Options

Use the tabs below to manage key campaign settings:

In the Campaign Details section, you can copy the Campaign ID or update the campaign name.

Copy Campaign ID and Change Campaign Name

Fig. 11 Copy Campaign ID and Change Campaign Name

In the SMS Trunk section, you can change the SMS Trunk.

Change SMS Trunk

Fig. 12 Change SMS Trunk

In the Remove Sender IDs section, you can remove Sender IDs that have been assigned for A2P messaging. To delete one or more Sender IDs, follow these steps:

  1. Select individual Sender IDs or click Select All.

  2. Click Remove to delete the selected entries.

  3. Click Submit to apply the changes.

Note

To change Sender IDs for Dynamic or Short-code A2P campaigns, contact sales@didww.com .

Remove Sender IDs

Fig. 13 Remove Sender IDs


Send SMS

Important

This feature is only available for active A2P campaigns using an HTTP OUT Trunk. If the SMS trunk is configured as an SMPP ESME Trunk or SMPP SMSC Trunk, the Send SMS option will not be available.

To send an individual SMS message directly from the A2P Campaigns page, typically for testing purposes, follow the steps below:

  1. Go to SMS > A2P Campaigns in the DIDWW User Panel.

  2. Locate your campaign and click the actions Actions button button.

  3. Select Send SMS from the dropdown menu.

Send SMS Actions.

Fig. 14 Send SMS Actions.

  1. In the Send SMS popup, select the Source Address, enter the Destination number, and type your message in the Text field.

Note

You can only select source addresses (Sender IDs) that are assigned to the specific A2P campaign you are using to send the SMS message.

  1. Click Send to deliver the SMS message to the specified Destination number.

Send SMS.

Fig. 15 Send SMS.

Note

For bulk messaging, message scheduling, and automation, use the Messaging Platform . Learn more in the Messaging Platform documentation.


Close A2P Campaign

To close an active A2P campaign, follow these steps:

  1. Navigate to SMS > A2P Campaigns.

  2. Locate the campaign, click the actions Actions button button, and select Close campaign.

Close Account Actions.

Fig. 16 Close Account Actions.

  1. A confirmation popup will appear.

  2. Click Confirm to close the A2P Campaign.

Close Account.

Fig. 17 Close Account.


Additional Resources

US Campaign Form

Step-by-step guide on completing the DIDWW A2P 10DLC campaign registration form for compliant messaging in the United States.

US A2P 10DLC Campaign Registration
Messaging Platform

Overview of the DIDWW Messaging Platform features, capabilities, and configuration for SMS and A2P messaging services.

Messaging Platform