Last Updated on February 9, 2026 by Damien Hurwitz
Text message marketing is a powerhouse. With an open rate of 98% (Forbes), it leaves email marketing in the dust. But if you’re new to SMS marketing or want to refine your strategy, understanding the right terms is crucial.
Whether you’re running promotions, automating responses, or building customer relationships, knowing these key SMS marketing terms will help you execute campaigns like a pro.
1. SMS (Short Message Service)
Let’s start simple. SMS is the standard text message format, limited to 160 characters per message. If a message exceeds this limit, it gets broken into multiple segments.
2. MMS (Multimedia Messaging Service)
Think of MMS as SMS with extra features. This type of message allows images, videos, and GIFs, making your text messages more visually engaging.
3. Short Code
A short code is a 5-6 digit number used for mass messaging. These are great for promotions, contests, and customer service because they’re easy to remember and process messages faster than regular phone numbers.
4. Long Code
Unlike short codes, long codes are standard 10-digit phone numbers. They allow two-way communication and are often used for more personalized, customer-specific messaging.
5. Keywords
Keywords are words or phrases that customers text to a number to trigger an automated response. For example, texting “JOIN” to a short code might subscribe a user to SMS updates.
6. Opt-In
Users must explicitly agree to receive SMS messages from your brand. This can be done via online forms, in-store sign-ups, or texting a keyword to a short code.
7. Opt-Out
Just as users must opt in, they must also have a way to opt out. Typically, customers can reply with “STOP” to unsubscribe from receiving further texts.
8. SMS Compliance (TCPA & CTIA)
Following TCPA (Telephone Consumer Protection Act) and CTIA guidelines is essential. These regulations ensure businesses get proper consent and avoid spamming customers, which can lead to hefty fines.
9. Drip Campaign
A series of pre-scheduled text messages sent over time. Drip campaigns help with onboarding, promotions, and nurturing leads without overwhelming recipients.
10. SMS API (Application Programming Interface)
An SMS API allows businesses to integrate text messaging capabilities into their existing systems, like CRMs or e-commerce platforms.
11. Click-Through Rate (CTR)
CTR measures how many recipients clicked on a link within your text message. A high CTR indicates an engaging campaign.
12. SMS Automation
Automating SMS messages based on triggers, such as abandoned carts, appointment reminders, or customer inquiries, saves time and improves engagement.
13. A2P vs. P2P Messaging
A2P (Application-to-Person) messaging is when businesses send messages to customers via software. P2P (Person-to-Person) messaging is standard texting between individuals.
14. Segmentation
Grouping subscribers based on demographics, behavior, or preferences allows for targeted messaging and better campaign results.
15. SMS Landing Page
A mobile-friendly webpage linked in a text message to drive conversions, often used for promotions and sign-ups.
Final Thoughts
SMS marketing is simple once you get the terminology down. Whether you’re sending promotions, reminders, or engaging customers, these terms will help you navigate the space with confidence.
If you’d like help growing your business via SMS marketing, contact us today for a free strategy consultation.