---
title: Message Deliverability
description: Message status icons tell you whether or not your message made it to the contact.
---

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1. [Text Request Help Center](https://help.textrequest.com/?hsLang=en)
2. [Messages](https://help.textrequest.com/messages?hsLang=en)
3. [Conversations](https://help.textrequest.com/messages?hsLang=en#conversations)

# Message Deliverability

## Understand message status icons, track delivery updates from carriers, and resolve undelivered text issues.

### **Overview of Message Delivery**

When you send a text through Text Request, your message travels from our system through the recipient's mobile carrier (e.g., Verizon, AT&T, T-Mobile) directly to their device. Mobile carriers provide status updates back to Text Request to confirm whether your message was successfully delivered or failed.

If you're experiencing platform-wide delivery delays or issues, check our live [Text Request System Status](https://status.textrequest.com/?utm_source=gemini) page to verify system health.

**Note:** Text Request supports texting exclusively to 10-digit phone numbers with the **+1 country code** (United States, Canada, and Puerto Rico).

**Warning:** If your account has not received approval for [10DLC Registration](https://help.textrequest.com/10dlc-registration?utm_source=gemini&hsLang=en), all outgoing messages will be marked as **Undelivered**. 10DLC approval is required by wireless carriers before you can send text messages.

 

### **Message Status Icons**

**![message-status-2x](https://help.textrequest.com/hs-fs/hubfs/Help%20Center/message-status-2x.png?width=450&name=message-status-2x.png)**

Hover over the status icon next to any message in your conversation thread to view its delivery state.

| **Status Icon** | **Meaning & System State** | **Recommended Action** |
| --- | --- | --- |
| **Sending** | The message was dispatched, but the carrier has not returned a delivery update yet. | Wait a few moments; carrier updates can cause slight delays. |
| **Delivered** | The carrier confirmed successful delivery to the recipient's device. | No action needed. (**Note:** SMS does not support read receipts.) |
| **Undelivered** | The carrier could not deliver the message to the recipient. | Hover over the **Undelivered** icon to view the specific error code below. |

 

### **Undelivered Message Error Reasons**

If a message is marked **Undelivered**, hover over the status icon to view the specific reason provided by the carrier:

#### **1. Unreachable**

- **Reason:** The mobile carrier could not reach the phone number, usually because the number is inactive or disconnected.
- **Action:** Verify that you entered the correct phone number. Try calling the number directly to check if it is active.

#### **2. Filtered**

- **Reason:** The recipient's carrier flagged your message as potential spam and blocked it from reaching the contact.
- **Action:** Review our [Anti-Spam Recommendations](https://help.textrequest.com/anti-spam-recommendations?utm_source=gemini&hsLang=en) to avoid spam triggers like ALL CAPS, dollar signs, unbranded links, or repetitive group blasts.

#### **3. Blocked / Blacklisted**

- **Reason:** Your text number has been blocked by the individual contact or **blacklisted** by the wireless carrier due to high spam complaints or policy violations.
- **Action:** Carrier blacklists are permanent across that carrier's network. If your number is blacklisted, contact Support at **support@textrequest.com** to discuss acquiring a new text number.

#### **4. Opt-out**

- **Reason:** The contact previously opted out of receiving messages from your business (e.g., by replying **STOP**).
- **Action:** You cannot text this contact until they choose to opt back in. The contact must text **START**, **YES**, or **UNSTOP** to your number to resume receiving messages.

#### **5. Landline**

- **Reason:** The destination phone number is a landline that cannot receive SMS text messages.
- **Action:** Confirm whether the contact has a mobile number available.

#### **6. Delivery Receipt Expired**

- **Reason:** The recipient's carrier failed to return a delivery confirmation within two hours, causing the status to time out.
- **Action:** The message may have actually been delivered despite the timeout. If you do not receive a response within a reasonable time, try re-sending the message.

#### **7. Error Code 404**

- **Reason:** The system could not identify a valid routing carrier, or the carrier could not locate the recipient. This often happens when a contact is actively switching service providers (e.g., porting from Verizon to AT&T) or if the number was recently reassigned.
- **Action:** Wait 24–48 hours for carrier routing tables to update, then attempt to send the message again.

#### **8. Unknown**

- **Reason:** The carrier rejected the message without providing a specific error code. This is usually caused by silent carrier spam filtering.
- **Action:** Rephrase your message body copy to remove sales buzzwords or URLs, then try sending again.

#### **9. Blank Reason**

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