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Time to complete: ~20 minutes to submit, then 1–2 business days for carrier review  ·  Difficulty: Intermediate

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What is A2P 10DLC?

A2P 10DLC (Application-to-Person, 10-Digit Long Code) is the US carrier registration required to send business texts from a standard 10-digit local number. Carriers require every business (a brand) and every texting use case (a campaign) to be registered with The Campaign Registry (TCR), the industry body that keeps the list. Registered senders can send more messages per day and get reliable delivery. Unregistered texts are filtered or blocked.
In short: 1) Connect Twilio or Telnyx. 2) Register your business as a brand and wait for approval. 3) Register your texting use case as a campaign and attach your numbers.
Autocampaign AI handles registration for both Twilio and Telnyx from inside the app. You fill in two forms and Autocampaign AI submits them to the carriers on your behalf.
10DLC applies to US mobile numbers. If you only message outside the US, you may not need it. Registering is still recommended for reliable delivery.

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Register in this order

Registration has a strict order because each step depends on the one before:
1

Connect your provider

Connect Twilio or Telnyx first. A provider is the phone company behind your texting numbers. Brand and campaign registration run through your connected account.
2

Register your Brand

Submit your business details. The brand must be approved before you can register a campaign.
3

Create a Messaging Service / Profile

A campaign must be linked to a messaging service (Twilio) or messaging profile (Telnyx). This is the container your provider uses to group your numbers.
4

Register your Campaign

Submit your use case, sample messages, and how people agree to receive your texts.
5

Attach phone numbers

Assign numbers to the messaging service so they send under the approved campaign.
You cannot register a campaign until the brand shows an approved status (APPROVED, VERIFIED, or ACTIVE). Trying earlier returns: “Brand is not approved yet (current status: …). Wait for approval before registering the campaign.”

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Register your Brand

Go to your SMS channel’s Brand & Campaign tab and click Register 10DLC Brand (also available as the first step of the setup wizard). The Create Brand drawer has three sections.
Click Create Brand. You’ll see “10DLC brand submitted for carrier registration.” The brand starts as Pending and updates automatically as the carrier reviews it.
Your EIN and legal business name must exactly match your IRS records. A mismatch is the most common reason a brand is rejected.

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Register your Campaign

Once your brand is approved, open the Brand & Campaign tab and click Create new A2P Campaign. Fill in:
  • A2P Brand — your approved brand.
  • Use case — pick from 15 options with monthly pricing, e.g. Marketing ($10/mo), **Mixed** ($10), 2FA ($10), **Account Notification** ($10), Customer Care ($10), **Low Volume Mixed** ($2), Sole Proprietor ($2).
Either create a new messaging service/profile (enter a name) or select an existing one. The campaign is linked to it.
  • Campaign description — minimum 40 characters. Describe what the campaign is used for.
  • Opt-in flow — minimum 40 characters (max 2048). Describe exactly how people agree to receive your texts (opt-in). Required by carriers.
  • Sample message #1 and #2 — required, minimum 20 characters each.
  • Sample #3–#5 — optional. Provide realistic examples of what you’ll send.
Check any that apply: embedded links, phone numbers, direct lending / loan content, or age-gated content. Carriers use these to assess your campaign.
Optional opt-in confirmation, opt-out confirmation, and help replies (20–320 characters each). If you leave keywords unset, Autocampaign AI applies standard defaults: opt-in START, YES; opt-out STOP, CANCEL, END, QUIT, UNSUBSCRIBE; help HELP, INFO.
Click Create. You’ll see “10DLC campaign submitted for carrier registration.” The campaign starts as In progress.
Your sample messages and opt-in flow must be consistent with each other and with your website. Carriers reject campaigns whose samples don’t match the stated use case or whose opt-in description is vague.

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What the status badges mean

Autocampaign AI shows a colored badge for both the brand and the campaign.
Statuses update automatically as Autocampaign AI checks with the carrier. You don’t need to refresh or resubmit while a badge is amber.

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FAQ

Brand verification is often quick; campaign approval typically takes 1–2 business days. Some use cases (like political or charity) may take longer because carriers check them more closely.
A brand is your business identity (registered once). A campaign is a specific texting use case (marketing, 2FA, notifications). One brand can have multiple campaigns.
Standard brands require an EIN (your business tax ID). Sole proprietors can register using the Sole Proprietor brand type / use case ($2/mo). It allows fewer messages per day and has a lighter verification path.
Changing a campaign’s use case or samples generally means the carrier reviews it again. Register the campaign that matches how you’ll actually message.
Yes. How many messages you can send per day is set by your brand trust score, which the carriers assign during vetting.
Yes. If you don’t set custom keywords, Autocampaign AI applies standard opt-out (STOP, CANCEL, END, QUIT, UNSUBSCRIBE), opt-in (START, YES), and help (HELP, INFO) keywords. See Opt-out management.

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Troubleshooting

Almost always because the business details don’t match official records. Check that your Legal Business Name, EIN, and address exactly match your IRS/official records, then edit and resubmit. Non-profits: a .gov/.org website mismatch is also common.
The brand badge isn’t green yet. Wait until it shows Approved / Verified before registering a campaign. The campaign form stays locked until the brand is approved.
Common causes: opt-in flow too vague, sample messages that don’t match the use case, or missing STOP/HELP handling in samples. Links to a website that doesn’t describe the texting program also cause rejections. Tighten your opt-in description and samples, then resubmit.
Twilio’s own business profile (called TrustHub) isn’t approved yet. Complete Twilio’s business profile verification in the Twilio Console, then retry brand registration in Autocampaign AI.
“Cannot delete brand: N campaign(s) still connected. Delete the campaigns first.” Remove the connected campaigns before deleting the brand.

Opt-out management

STOP handling and keyword settings.

Opt-in & auto-reply

Consent and re-subscribe behavior.