Most business owners just think “texting is texting.” But there are meaningful differences. The main types of text messages are SMS, or Short Message Service, for plain text up to 160 characters, MMS, or Multimedia Messaging Service, for images, videos, and longer texts, and RCS, or Rich Communication Services, which adds read receipts, typing indicators, and high-res media to iPhones running iOS 18+ and Android messaging.
In this guide, you’ll learn about the different types of text messages, when to use them, and how. I’ll also share some automation tips to help you save time while still making every customer feel special.
Important: You need to get verbal or written SMS opt-in before sending texts like event reminders or promotions. Without it, you’re only allowed to reply when someone messages you first. Skipping this step could put your business at risk of non-compliance with TCPA regulations.
6 Different types of text messages
Not every text is built the same. Here’s a quick breakdown of the six main types and what they mean for your business.
| Type of text message format | Media supported | Limits |
|---|---|---|
| SMS | Just text | 160 characters, no media, not end-to-end encrypted |
| MMS | Images, videos, GIFs, PDFs, longer text | 1-3.5 MB, depending on carrier |
| Instant messaging | Text, images, videos, audio, documents, GIFs, stickers, location pins | Both sender and receiver must use the same app; requires internet |
| RCS | High-res images and videos, read receipts, typing indicators | Limited carrier/device support; may fall back to SMS; encryption inconsistent |
| In-app messaging | Pop-ups, chat bubbles, banners, tooltips | Only visible while user is in your app; not practical without a dedicated app |
| Push notifications | App alerts | Only works if user has your app notifications enabled; can be ignored if overused |
1. SMS or Short Message Service
Best for: Quick, plain-text updates that reach any phone
SMS is text messaging delivered over your carrier’s cellular network. These messages are limited to 160 characters and only support plain text. No images, PDFs, or video clips are allowed. It works on virtually every phone, which makes it the most reliable way to reach customers. For most US businesses, SMS is the backbone of text communication.
Pro tip: To avoid carrier spam filters, don’t use generic link shorteners like bit.ly. Also, clearly identify your business, and avoid overly salesy words like “guaranteed” or “100% free.” Learn more in our guide to SMS compliance.
2. MMS or Multimedia Messaging Service
Best for: Visual messages that add context beyond plain text
MMS lets you send images, GIFs, short videos, and PDFs alongside text. It works through the same carrier infrastructure as SMS, so no app download is required on either end. If you want to send a product photo, a menu, or a before-and-after image, MMS is how you do it. With VoIP phones, you can send MMS with any internet connection, including WiFi.
3. Instant messaging
Best for: Real-time, two-way conversational messaging with more privacy
Instant messaging — think WhatsApp, Facebook Messenger, or Slack — is internet-based. It travels through a dedicated app rather than your phone carrier. It supports features like end-to-end encryption and read receipts — but only works if both you and your customer are on the same platform. For US businesses texting customers at scale, this is rarely the right primary channel.
4. RCS or Rich Communication Services
Best for: Texting customers with richer features than SMS/MMS without needing a separate messaging app
RCS is an upgrade to standard SMS and MMS that supports high-res media, read receipts, and typing indicators. It works through your phone’s built-in messaging app. It’s promising, but not universally supported yet: messages fall back to SMS if either party’s device or carrier doesn’t support it. Cross-platform encryption isn’t consistent. It’s worth knowing about, but not something most businesses should build their strategy around yet.
5. In-app messages
Best for: Guiding users while they’re actively using your app
In-app messages are notifications that appear inside a mobile app while someone is actively using it. Think welcome banners, feature tips, or promotional pop-ups. They’re useful for product-led engagement but disappear when someone closes the app. Since they require a custom app to implement, they’re outside the scope of traditional business texting.
6. Push notifications
Best for: Re-engaging customers while they’re away from your app
Push notifications are app-generated alerts that appear on a user’s screen even when they’re not in the app. They’re useful for time-sensitive updates like delivery alerts or flash sales. Like in-app messages, they depend on having a dedicated app and a user who hasn’t disabled your notifications. They’re not “texting” in the traditional sense, and they’re not a practical channel for most small businesses.
3 ways to use text messaging in your business
The type of message you send should match what you’re trying to accomplish. For most businesses, that comes down to two formats — SMS and MMS — and three core use cases.
1. SMS: Quick updates and alerts
SMS is the right choice any time your message is short, text-only, and needs to reach someone reliably.
Use SMS texts to:
- Confirm appointments
- Send appointment reminders
- Answer quick questions
- Share short updates, like business hours or closures
- Send payment reminder messages
- Follow up after a visit
- Ask for business reviews
You can even schedule texts like birthday greetings or holiday messages in advance, so they go out right on time.
2. MMS: When a visual says more than text can
MMS lets you attach images, short videos, GIFs, and PDFs to a message.
Use MMS to:
- Send a digital receipt or invoice
- Share a short video tutorial or walkthrough
- Show off a product demo
- Send an event poster with time and location
- Share before-and-after service photos
- Share a restaurant menu
Just know that file size limits apply and deliverability isn’t quite as consistent as SMS. Read our guide to learn more: Why text messages fail to deliver.
3. Bulk and group messaging
When you need to reach multiple people at once, you have two options:
- Group texts that put everyone in a shared thread: Useful for team coordination or small customer groups where back-and-forth makes sense.
- Bulk messaging typically sent via short codes: Ideal for one-way campaigns: promotions, announcements, or large-scale alerts where replies aren’t expected. Short codes cost more to set up and aren’t designed for conversation, so they’re best reserved for high-volume, one-directional sends.
How to automate texting workflows
Once you know what to send, the next question is how to keep up with it without it becoming a full-time job. A few features make your own SMS workflows more efficient:
- Auto-replies handle missed calls and after-hours texts automatically, so customers get a response even when you’re not available. In Quo, you can configure auto-replies in your account settings under messaging automations. You can trigger them on missed calls, incoming texts, or after-hours windows.
“The auto-reply features make me look like a hero. My customers think that I’m always on top of things, even when I am offline for the night.” — Ronald Mansilla, Founder of Safely Finance
- Text message templates (we call them snippets) let you send consistent follow-ups, reminders, and payment requests without retyping them every time.
- Automated messages triggered by customer actions — a booking, a form submission, a first purchase — remove the manual step entirely. Quo’s Zapier and Make integrations make these easy to set up.
- CRM integrations sync conversations to tools like HubSpot, Salesforce, or Jobber so customer context doesn’t live in a separate inbox.
- Scheduled messages let you queue texts outside business hours and send based on each contact’s time zone.
What’s next
Now that you know the different types of text messages, the natural next question is which format is right for your business — and when to use one over the other.
Quo supports SMS, MMS, group messaging, and more, so whichever direction you go, it’s all in one place.
Check out our guide to SMS vs. MMS: What’s the difference and which should you use?
FAQs
SMS is typically included in business phone plans at no additional per-message cost. MMS often costs 2–3x more per message than SMS with traditional carriers — expect $0.01–$0.03 per SMS and $0.02–$0.05 per MMS. With Quo, both SMS and MMS to US and Canadian numbers are included in every plan with no per-message fees.
Businesses most commonly automate transactional messages: appointment confirmations, order updates, payment reminders, and new lead follow-ups. Auto-replies triggered by missed calls or incoming texts can be automated without any coding.
Yes. Under TCPA regulations, businesses must get prior express written consent before sending marketing or promotional texts. Transactional messages — like order confirmations — require verbal or written consent. Skipping opt-in can result in fines of $500–$1,500 per violation. For full compliance guidance, see our SMS compliance guide.
SMS is still the better choice for text marketing. It works on every device and carrier, while RCS is newer and not fully supported yet. RCS may offer richer features, but SMS gives you reliability and reach. As RCS adoption grows across Android and iPhone, RCS could become more practical. But for now, SMS remains the safer bet for marketing messages.
SMS works on almost every phone and carrier, making it a reliable way to reach customers. But it’s limited and only supports plain text. RCS adds features like typing indicators, high-resolution images, and read receipts. But it only works when both people use supported devices.
No, RCS needs an internet connection. Messages are sent over WiFi or mobile data, not through your phone carrier like SMS. If there’s no internet, RCS messages will either fail to send or be converted to SMS, if that’s supported.
If your message includes only plain text, it will be sent as an SMS. But if it’s longer than 160 characters, your text will be sent as an MMS.
Additionally, if a message contains images, videos, audio, or any kind of attachment, your phone likely also sends it as an MMS.
Bulk SMS marketing lets you send the same message to a large list of phone numbers at once. You can usually do this through a messaging system or short code. It’s often used for promotions, announcements, or alerts.
You can text multiple people on Quo using our Google Sheets and Zapier integration. For example, you can send out invites for an upcoming event or wish customers a happy holiday.
SMS works on every phone, while iMessage only works between Apple devices. iMessage also requires an internet connection, while SMS doesn’t. If the internet isn’t available, iMessages either fail or convert to SMS. For businesses, SMS is the safer option since it guarantees delivery across all devices and networks.
No, both use an internet connection to send messages. iMessage only works between Apple devices, while WhatsApp requires both users to have the app installed.
