Group texting for business: short codes, long codes, and 10DLC explained

Group texting for business means sending one message to hundreds or thousands of contacts at once, but the phone number you send from changes everything about whether that message lands. Short codes, long codes, and 10DLC-registered numbers each follow different carrier rules, reach different volumes, and carry different compliance requirements. This guide explains how they work, when to use each, and what has changed since carriers began enforcing 10DLC registration requirements.

What is group texting for business?

Group texting for business is the practice of sending a single SMS message to a defined list of contacts simultaneously, typically through a messaging platform rather than a personal phone. Unlike a group chat where recipients see each other's replies, business group texting delivers individual messages to each contact, preserving privacy and avoiding reply-all chaos. Organizations use it for staff alerts, appointment reminders, promotional campaigns, and emergency notifications.

For most organizations, group texting is the fastest reliable channel available. SMS open rates average 98%, according to CTIA, compared to roughly 20% for email. When a message needs to reach people quickly, whether that's a shift change notice, a flash sale, or a school closure alert, text outperforms every alternative.

Text-Em-All's mass texting platform handles group texting for businesses and organizations of all sizes, from 50-person nonprofits to multi-location healthcare systems. You can learn more about how Text-Em-All's mass texting service works here.

Short codes vs. long codes: what's the difference?

A short code is a 5 or 6-digit number used exclusively for high-volume business texting. A long code is a standard 10-digit number like any personal phone number. Short codes send faster, carry higher throughput limits, and require dedicated carrier approval. Long codes are easier to obtain but operate under stricter per-message filtering rules. Choosing between them depends on your volume, timeline, and use case.

What is 10DLC and why does it matter for business texting?

10DLC stands for 10-Digit Long Code. It is the carrier framework introduced by major US carriers requiring businesses to register their brand and messaging campaigns before sending text messages on standard 10-digit numbers. As of 2024, unregistered long code traffic is filtered or blocked by AT&T, T-Mobile, and Verizon. Any organization sending group texts on a long code without 10DLC registration risks significant message delivery failure.

The 10DLC system was designed to reduce spam and carrier abuse. Before 10DLC, long codes were easy to spoof and frequently used for unsolicited messages. Carriers responded by throttling long code traffic broadly. 10DLC registration gives legitimate businesses a path to reliable delivery by tying their messages to a verified brand identity and declared use case.

Registration involves two steps. First, you register your brand with The Campaign Registry (TCR), which verifies your business identity. Second, you register each campaign, describing the message type (promotional, customer care, alerts, etc.) and confirming opt-in practices. Approval typically takes a few days to a few weeks depending on the use case category.

Text-Em-All handles 10DLC registration directly for customers using its platform. You can review the full 10DLC registration process and requirements here.

Short code vs. 10DLC: how to choose for group texting

Short codes are the right choice when you need to send hundreds of thousands of messages quickly and have the budget and timeline for dedicated carrier approval. 10DLC-registered long codes are the right choice for most organizations doing regular group texting, because they are less expensive, faster to obtain, and support two-way conversations naturally.

Use this framework to decide:

• If you send more than 100,000 messages per month and need sub-minute delivery windows: a dedicated short code is likely worth the cost and lead time.
• If you send regular operational messages to staff, members, or customers at moderate volume: a 10DLC-registered long code delivers reliably at a fraction of the cost.
• If you want a recognizable number for inbound customer replies: either a 10DLC long code or a toll-free number gives you two-way capability without short code limitations.
• If you are running an SMS marketing campaign to opted-in subscribers: 10DLC is the standard path for most organizations, with short codes reserved for large-scale promotional programs.

Shared short codes, which allowed multiple businesses to split one short code, were deprecated by carriers in 2021. Any organization still referencing shared short codes in their processes needs to migrate to either a dedicated short code or a 10DLC-registered number. There is no compliant path to send business group texts on a shared short code today.

How group texting works on Text-Em-All's platform

Text-Em-All supports group texting through 10DLC-registered numbers for most organizational use cases. The platform handles contact list management, message scheduling, compliance filtering, and delivery reporting in one place. You upload your list, compose your message, confirm your send, and Text-Em-All routes it through registered numbers with carrier-compliant formatting.

A few things that matter in practice:

• Text-Em-All automatically filters out numbers that cannot receive texts, including landlines and numbers on internal suppression lists, before each send.
• Opt-out handling is built in. When a contact replies STOP, Text-Em-All removes them from future sends automatically without requiring manual list management.
• Message delivery reports show which numbers received the message, which did not, and the reason for any failures.
• The platform supports both one-time broadcasts and scheduled sends, useful for appointment reminders and recurring operational alerts.

Text-Em-All is built for organizations with established audiences reaching their own contacts, not for list-growth marketing to cold leads. That distinction matters for compliance. When your contacts have a prior relationship with your organization and have opted in to receive texts, 10DLC registration supports clean, reliable delivery.

Compliance requirements for business group texting in 2026

The TCPA (Telephone Consumer Protection Act) governs business texting in the US, and carrier requirements under 10DLC operate alongside it. The core compliance requirements for group texting have not changed in principle, but enforcement has tightened significantly since 2024.

The non-negotiable requirements for any group texting program:

• Written consent before texting: contacts must have explicitly opted in to receive text messages from your organization. Implied consent from a business relationship is generally not sufficient for promotional messages.
• Clear sender identification: every message must identify who is sending it. "Text-Em-All customer: [Org Name]" or the organization's name must appear in the message.
• Opt-out instructions: every promotional message must include STOP instructions. Operational messages to employees with prior notice have more flexibility, but including opt-out language is best practice regardless.
• 10DLC registration for long code sending: as of 2024, unregistered long code traffic is filtered by major carriers. Registration is not optional for compliant delivery.
• Appropriate send times: TCPA generally restricts promotional messages to 8 AM to 9 PM in the recipient's local time zone.

Compliance requirements differ slightly by message type. Employee notifications and operational alerts from an employer to staff typically have more latitude than promotional messages to customers. When in doubt, the stricter standard is the safer one.

Frequently asked questions

What is a short code for texting?

A short code is a 5 or 6-digit phone number used specifically for high-volume business text messaging. Short codes are approved by carriers for commercial use and can send messages much faster than standard 10-digit numbers, up to 500 messages per second for dedicated short codes. They are commonly used by national brands, retailers, and organizations running large-scale SMS campaigns or alerts. Shared short codes were deprecated in 2021 and are no longer a compliant option.

What is the difference between a short code and a long code for business texting?

Short codes are 5-6 digit numbers designed for high-volume, fast sending, typically used by large-scale senders. Long codes are standard 10-digit numbers that, when registered under the 10DLC framework, support business texting for most organizations. Long codes cost significantly less, enable two-way conversations more naturally, and are faster to register than dedicated short codes. For most businesses and organizations sending group texts, a 10DLC-registered long code is the right choice.

What is 10DLC and is it required for business texting?

10DLC (10-Digit Long Code) is the carrier registration system that requires businesses to verify their brand and messaging campaign before sending texts on standard 10-digit numbers. As of 2024, registration is effectively required for reliable delivery on long codes. Unregistered traffic is filtered or blocked by AT&T, T-Mobile, and Verizon. Text-Em-All manages 10DLC registration as part of its onboarding process.

Can I still use a shared short code for my business?

No. Shared short codes, where multiple businesses shared one short code number, were deprecated by major US carriers in 2021. Any business that previously used a shared short code needs to migrate to either a dedicated short code or a 10DLC-registered long code. Continuing to send on a shared short code is not a compliant option and will result in message delivery failures.

How do I register for 10DLC?

10DLC registration involves two steps: registering your brand with The Campaign Registry (TCR) to verify your business identity, and then registering each messaging campaign with a description of your use case and opt-in practices. If you use Text-Em-All, the platform handles this registration process for you. You can find the full details and requirements on the 10DLC registration page.

Is group texting for business legal?

Yes, group texting for business is legal when done correctly. The TCPA requires that recipients have given written consent to receive texts, that messages identify the sender, and that promotional messages include opt-out instructions and are sent during permitted hours (8 AM to 9 PM local time). Carrier requirements under 10DLC add registration requirements for long code sending. Organizations that follow these requirements can send group texts reliably and legally.

What is the best group texting platform for businesses?

Text-Em-All is best for organizations that need to reach established audiences, including staff, members, customers, or constituents, at scale. It is built specifically for operational and organizational messaging, with 10DLC registration, compliance filtering, and delivery reporting built in. For ecommerce brands focused on list-growth marketing, platforms like Klaviyo or Attentive serve a different set of needs. For most organizations with an existing contact base that needs to communicate reliably, Text-Em-All is the appropriate choice.