SMS & 10DLC Pricing — Transparent Costs

1. What's included in your plan

Every MyBizNumber plan includes a monthly texting allowance as part of the flat price below. There is no separate SMS bill — what you see is what you pay.

See the full Pricing page for everything each plan includes.

2. How billing actually works

You pay Synthfy one flat monthly (or annual) subscription charge for your MyBizNumber plan. That's the entire transaction — you never pay a wireless carrier, a messaging vendor, or a compliance registry directly. Synthfy is your merchant of record for everything: your number, your minutes, and your texting.

Behind the scenes, Synthfy uses a messaging infrastructure partner (SignalWire) to actually deliver calls and texts and to register your business for compliant SMS. Those are our costs to manage, not separate charges passed on to you line-by-line.

3. What is 10DLC, and why do I have to register?

10DLC ("10-Digit Long Code") is the US wireless carrier system for businesses that send text messages from a standard local phone number. Carriers (AT&T, T-Mobile, Verizon, and others) require every business sending texts this way to register their business identity through an industry registry (The Campaign Registry) before texts are allowed to go through reliably. This isn't a Synthfy requirement — it's a carrier-wide anti-spam rule that applies to every business texting platform, not just us.

In practice: pick your MyBizNumber, fill out a short form with your legal business info (from your Settings page), and submit. Approval typically comes back from the carriers within a few hours to a couple of days.

4. Who pays for 10DLC registration?

Synthfy does. Registering your business for 10DLC has a real cost that our messaging partner charges us — a small one-time registration fee plus a small recurring compliance fee. We absorb that cost as part of running MyBizNumber; it is already built into your monthly plan price. You are never billed a separate registration fee, activation fee, or "compliance surcharge" to text-enable your number. There is no markup added on top of that registration step — it costs you nothing beyond your regular plan.

5. Message length & character limits

These limits are set by the wireless carrier industry, not by Synthfy — they're the same for every SMS provider:

• Plain-text messages (letters, numbers, standard punctuation): up to 160 characters in a single message.
• Messages with emoji, accented letters, or non-Latin characters (e.g. é, 中文): up to 70 characters in a single message.
• Longer messages are automatically split into multiple "segments" and reassembled on the recipient's phone as one message — you don't need to shorten anything manually, but very long messages use more of your monthly allowance since each segment counts as one message.

6. Questions

For anything not covered here, email support@synthfy.us. See also our SMS Terms & Disclosure (opt-in/opt-out rules for people receiving texts) and our full Pricing page.