piggyback
0:00
Step 1 of 7 ~1 minute

Let's get you texting.

Four fields. Then the good stuff starts.

A little about your business.

The carriers require this. We'll pull what we can from IRS records.

Enter your EIN and we'll pull business name, address, and industry. Must match what's on your IRS CP-575 letter exactly — even punctuation matters for the carrier match.

Now the magic part.

The number on your signs, cards, and Google listing. We'll text-enable it without touching your voice service.

This number is eligible.
We can text-enable +1 (415) 555-0188 without changing your voice provider.
Carrier
AT&T Mobility
Line type
Mobile (business)
Routes via
AT&T · OCN 6529
Region
San Francisco, CA
Your voice service stays exactly where it is.
Calls keep ringing through AT&T. Your bill, your service, your contract — nothing changes there. We're only adding messaging on top.
Typical activation for AT&T-routed business lines: 1–2 business days after you sign the LOA.
Don't have a number yet?

No problem — we can provision a fresh local number in your area code, or a toll-free. You can add your main number later.

Authorize the carrier swap.

One legal form — an LOA, or Letter of Authorization. Permits us to talk to AT&T on your behalf about adding messaging to your line.

What you're agreeing to
Permit Piggyback to add SMS and MMS to +1 (415) 555-0188 through AT&T's hosted-messaging program.
Not changing your voice service, your phone bill, or your carrier of record.
Reversible at any time — we can release the messaging hosting without affecting your voice line.
Confirms you have legal authority to make this decision for Summit Mortgage Group.
Read the full LOA text

LETTER OF AUTHORIZATION — HOSTED MESSAGING SERVICE

Effective Date: today

I, the undersigned, on behalf of Summit Mortgage Group, LLC (the "Customer"), hereby authorize Piggyback ("Service Provider") to act as our agent for the limited purpose of arranging hosted SMS and MMS messaging service on the telephone number(s) listed below, through the Customer's existing wireless carrier and downstream messaging connectivity partners (Direct Connect Aggregators, Mobile Network Operators, and The Campaign Registry).

TELEPHONE NUMBER(S): +1 (415) 555-0188

EXISTING VOICE CARRIER: AT&T Mobility (will remain unchanged)

SCOPE OF AUTHORIZATION: This authorization permits Service Provider to (a) submit hosted-messaging orders to the Customer's carrier and downstream connectivity partners; (b) register and maintain 10DLC brand and campaign records with The Campaign Registry on behalf of the Customer; (c) execute account-level changes necessary to enable, suspend, or release SMS/MMS service on the listed number(s).

SCOPE EXCLUSIONS: This authorization does NOT extend to porting voice service, terminating any existing carrier contract, or making any changes to billing arrangements outside of messaging-related charges to the Customer's account with Service Provider.

TERM AND TERMINATION: This authorization remains in effect until rescinded in writing by the Customer. Upon rescission, Service Provider will release messaging hosting through carrier-coordination channels in the ordinary course (typically 1–7 business days).

WARRANTIES: The undersigned warrants that they have full legal authority to bind the Customer to this authorization.

Authorized signer
Sign here
Type your full legal name to sign. Signature is recorded with timestamp and IP address as your audit-ready chain of custody.

What will you mostly use this for?

Pick the closest fit. We handle the carrier paperwork — you don't need to know what "10DLC campaign" means.

📅
Rate locks & closing reminders
Confirm rate locks, send closing reminders, handle document requests.
💬
Customer support
Answer questions, resolve issues, two-way conversations.
📦
Order updates
Status notifications, delivery tracking, ETA messages.
🎯
Marketing & promos
Announce sales, share offers, drive engagement.
Sample message we'll register for you
"Hi {{first_name}} — Patricia at Summit Mortgage Group. Confirming your closing on {{date}} at {{time}}. Reply C to confirm or R to reschedule. STOP anytime to opt out."

We handle compliance.

Sensible defaults — most businesses leave these alone. But you can tune anything.

Quiet hours
No texts will send during these hours. Queued automatically for the next window.
Auto
From
To
Per recipient's timezone. Stricter state laws (Florida 8 PM, Texas 9 PM) are automatic.
STOP keyword
Always on. Federal law. Someone texts STOP, they're immediately unsubscribed.
Required
"You're out — Summit Mortgage Group won't text you again. Change your mind? Just call us anytime."
Welcome message
Sent the first time you text someone new.
"Hey — this is Summit Mortgage Group. Text us anytime; we'll reply during business hours. Reply STOP to opt out, no questions."

One last look.

When you submit, we start the carrier review. You can keep setting up while we wait.

Business
Summit Mortgage Group, LLC
EIN 84-2916447 · San Francisco, CA
Number
+1 (415) 555-0188
AT&T Mobility · voice unchanged
LOA
Signed by Patricia Shaw, Owner / Sole Member
E-signed today · timestamped audit trail stored
Use case
Rate locks & closing reminders
Compliance
Quiet hours 9 PM–8 AM · STOP on · Welcome on
Under 10 minutes. Told you.
Your timer: 0:00. Carrier approval takes 18–24 hours — we'll text you when it's live.