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A2P Communication Standards

Learn more about A2P Communication Standards and how to register your firm to enabled text messaging in MyCase.

Updated this week

Learn more about A2P Communication Standards and how to register your firm to enable text messaging in MyCase.

A2P 10DLC refers to a system in the United States that allows businesses to send Application-to-Person (A2P) type messaging via standard 10-digit long code (10DLC) phone numbers. Carriers in the US consider all messages sent through the provider used by MyCase to be A2P (Application-to-Person) messages. Carriers’ A2P 10DLC offerings provide better delivery quality and lower filtering risk than long code SMS of the past, using the same phone numbers.

To maintain these standards, MyCase is required to register text messaging users with Twilio, the provider used by MyCase to send text messages. To complete this registration process, navigate to Communications > Text Messages and click the button titled Complete Registration Form.

Please note:


PO BOX addresses are not valid addresses. Please provide a physical address for registration.

  • An active website with a privacy policy and terms of use is required to register.

  • Your business' full name and EIN are present in your EIN letter as outlined below:

EIN Sample.png

A2P Communication Standards FAQ

I have to register. Is this real or a bug?

The banner you received is legitimate and from MyCase. The US messaging landscape continues to see change as the use cases for business text messaging and SMS and MMS marketing have grown. Carriers, such as Verizon, AT&T, etc., have adopted new requirements for business messaging called A2P 10 DLC (see below).

To comply with this change, all SMS providers, including the one used by MyCase, are required to register customers’ businesses with US carriers including your legal business name, a physical address, Tax ID/EIN, and more. We are notifying you because your firm will need to complete a new registration form that includes this information.

Twilio has reached out to me directly. Should I work with them?

Please feel free to work with Twilio directly if they have reached out to you, but please note that our team will continue to work on the backend to resolve this for your firm whether you choose to work with the Twilio team or not. You do not need to pay Twilio anything for these changes. If Twilio tells you that they have verified your firm, please reach out to MyCase Support to notify us so that we may look into this change accordingly.

Why do you need my Tax ID?

TCR (The Campaign Registry) partnered across the industry and announced new requirements recently that led to these changes to our text messaging offering.

What happens if I choose not to register?

Failure to register may lead to increased outgoing message delivery failure. We reserve the right to disable MyCase Texting for unregistered firms.

What if I can't register? (don't have an EIN)

All businesses are available to get an EIN from the IRS here. Failure to register may lead to increased outgoing message delivery failure.

Obtaining Verbal Consent from Clients to Opt into SMS Messages
Opt-in consent is required to ensure recipients have explicitly agreed to receive messages from your business.

Sample verbal consent script:

Firm request: "As part of our service, we offer text message updates about your case and billing, things like reminders, important dates, or quick updates. You may receive up to 10 texts per month, and depending on your phone plan, message and data rates may apply. Please refer to our privacy policy and terms of service, located on our website, for more details.

If you ever need help, you can reply ‘HELP’ to any message, and if you ever want to stop receiving them, reply ‘STOP.’

To get started, can you share the phone number you’d like us to use for texts?”

[Client provides number]

“Thanks! And just to confirm, do you consent to receive text messages from our firm at that number?”

[Client says “Yes” or similar confirmation.]

“Great! You’ll get a confirmation text shortly. And remember, you can opt out any time by replying STOP.”

How do I know that my data is safe?

We do not store any of this information. We pass it through directly to our partner Twilio. Twilio then submits their data to TCR (The Campaign Registry), which is the national telecommunications registry for verification.

Is there a price increase?

No, there is no price increase associated with this required registration.

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