Send SMS & MMS with carrier-registered 10-digit local numbers, trusted, compliant, and built for scale.
.webp)
10DLC (10-digit long code) is a carrier-approved messaging solution for Application-to-Person (A2P) messaging.
It enables businesses to send SMS and MMS using standard 10-digit phone numbers while ensuring higher deliverability, improved compliance, and faster throughput compared to unregistered long codes.
A registered 10DLC number is verified by carriers to meet industry compliance guidelines.
Registration significantly reduces the risk of filtering or blocked messages, ensuring your communications reliably reach customers.
.webp)
Create your account at portal.signalmash.com.
Fund your account and select the right messaging package.
Submit your business and campaign details for carrier approval.
Use your 10DLC number for alerts, notifications, and campaigns
Local 10-digit numbers build trust, driving higher open and response rates.
Registered numbers bypass spam filters for more reliable delivery.
Affordable alternative to short codes with high throughput.
Send text, images, videos, and rich media for better engagement.
Carrier registration prevents spam and ensures regulatory alignment.
Connect directly to your CRM, marketing, or service tools.
Signalmash is a partner-first CPaaS platform built for speed, compliance, and reliability.
Direct Slack access to real experts, not ticket queues.
Send millions of messages per day without bottlenecks.
Easy-to-integrate APIs for automation and bulk messaging.
We manage 10DLC registration, carrier approvals, and verification.
No hidden fees, no delivery guesswork.
A CPaaS partner that works with you, not just for you.
US carriers require every business sending application-to-person SMS from a 10-digit local number to register its brand and campaign with The Campaign Registry. Registration verifies who is sending, prevents spam, and unlocks higher throughput and deliverability for registered 10DLC traffic.
Yes. Any valid 10-digit US or Canadian phone number can be registered for 10DLC messaging. Signalmash can port your existing business number in and enable SMS and MMS on it, so customers see the same number for calls and texts.
Brand registration is usually instant to 24 hours. Campaign approval typically takes 2-7 business days depending on the use case and vetting level. Signalmash reviews your campaign before submission to avoid the most common rejection reasons.
Unregistered 10DLC traffic is blocked or heavily filtered by US carriers, and fines can apply for non-compliant sending. Signalmash only routes registered messaging, which guarantees compliance and protects your brand reputation and deliverability.
Yes. Every 10DLC campaign must collect explicit, documented opt-in before the first message, include STOP and HELP instructions, and honour opt-outs immediately. Your opt-in flow is reviewed as part of campaign registration.
Everything we know about registration, approval and throughput, written for the people who have to do it: the complete 10DLC registration guide (hub), the campaign approval checklist, throughput and trust scores, why campaigns get rejected, 10DLC error codes, short code vs 10DLC vs toll-free and what a managed compliance service includes.
Before you submit anything, run the free 10DLC readiness checker: 22 yes/no questions that score your brand record, website, opt-in, sample messages and keyword handling the way a reviewer would, then tell you what to fix first. The A2P 10DLC registration requirements article explains each requirement in full.
New to the vocabulary? Brand, campaign, trust score, vetting, TCR, throughput and SHAFT are all defined in the telecom and messaging glossary.
Starting from zero? What 10DLC is explains the term in plain English, and how long registration takes gives realistic timelines for brand, vetting and campaign approval.
The rules reviewers apply come from the industry's own rulebook: our plain-English guide to the CTIA Messaging Principles and Best Practices covers the three consent tiers, STOP and HELP handling, prohibited content and snowshoeing, and the US telecom regulations hub tracks the 2025 and 2026 TCPA and STIR/SHAKEN changes that sit alongside them.
Boost deliverability, build trust, and scale your SMS/MMS campaigns with SignalMash’s carrier-registered 10DLC messaging.
