--- title: Troubleshooting SMS Delivery Issues description: If your SMS messages are not being delivered, it could be due to mobile carrier rules and 10DLC compliance requirements. --- [Skip to content](https://support.notifyre.com/troubleshooting-sms-delivery-issues#main-content) [![notifyre-logo-email-1](https://support.notifyre.com/hs-fs/hubfs/notifyre-logo-email-1.png?width=200&height=60&name=notifyre-logo-email-1.png)](https://notifyre.com/) - [Login](https://app.notifyre.com/login) - [Pricing](https://notifyre.com/) - [Contact](https://notifyre.com/) - [Sender ID Registration](https://support.notifyre.com/alphanumeric-sender-id-registration) Open main navigation Close main navigation - [Login](https://app.notifyre.com/login) - [Pricing](https://notifyre.com/) - [Contact](https://notifyre.com/) - [Sender ID Registration](https://support.notifyre.com/alphanumeric-sender-id-registration) - [Sign Up](https://notifyre.com/signup/) [Sign Up](https://notifyre.com/signup/) Notifyre Guides, FAQs & Customer Support - There are no suggestions because the search field is empty. 1. [Help Center](https://support.notifyre.com/?hsLang=en) 2. [SMS & MMS](https://support.notifyre.com/sms-mms?hsLang=en) 3. [Sending SMS & MMS](https://support.notifyre.com/sms-mms?hsLang=en#sending-sms-mms) November 7, 2025 # Troubleshooting SMS Delivery Issues ## If your SMS messages are not being delivered, it could be due to mobile carrier rules and 10DLC compliance requirements. - [Common carrier delivery issues](https://support.notifyre.com/troubleshooting-sms-delivery-issues#common-sms-delivery-reasons) - [Email to SMS delivery troubleshooting](https://support.notifyre.com/troubleshooting-sms-delivery-issues#email-to-sms-delivery-troubleshooting) If your SMS messages are not marked as **"Successful - Delivered,"** they may be getting blocked due to mobile carrier rules and 10DLC compliance requirements. These measures help reduce spam and ensure messages reach their intended recipients. ### Common reasons why your SMS messages might not be delivered: ### 1. No 10DLC Registration To A2P text messages, your phone number must be registered for 10DLC messaging. Without registration, carriers may block your messages. - Ensure your number is registered under a 10DLC campaign. Follow the [10DLC registration guide](https://notifyre.com/us/blog/a2p-10dlc-guide) ### 2. Non-Compliant Message Content - Your messages must align with the sample message content you submitted during registration. If your messages contain unapproved content, they may be blocked. - Avoid adding phone numbers or website links that were not included in your original campaign registration. - If you need to update your content, you may need to re-register your campaign. ### 3. Missing "Opt-Out" Instructions - Carriers require that all SMS messages provide recipients with a way to opt out. - Include a phrase such as **"Reply STOP to opt out"** in your messages to ensure compliance. ### 4. Carrier Sending Limits - Mobile carriers impose limits on the number of messages sent per day or per minute. Exceeding these limits can lead to delivery failures. - If you need higher throughput, please [contact support](https://notifyre.com/us/contact-support).  By following these guidelines, you can improve your SMS delivery rates and ensure compliance with carrier regulations. If you continue to experience issues, contact Notifyre Support for assistance. ### SMS to Email delivery troubleshooting If your Email to SMS message fails, you’ll receive a notification email from Notifyre. To fix the issue, check the following and then try send again: - **Available funds:** [Login](https://app.notifyre.com/) and check that your account has sufficient funds to send SMS. - **Character limits**: Review your [SMS character limits](https://support.notifyre.com/sms-part-limit?hsLang=en) in your account settings. If your email body exceeds the character limit you’ve set, the SMS will fail. - **Email body required**: Ensure the email has content in the body. This text is what will be sent as the SMS. Remove unwanted email signatures or these will be sent as an SMS.  - **Correct sending address**: Confirm you are sending from the correct email address: **smsnumber@{accountid}.sms.notifyre.com - **for sending to Australian SMS number **smsnumber@{accountid}.sms.us.notifyre.com -** for sending to United States SMS number - **Account ID:** Verify you’re using the correct Account ID. - **Country Code:** Include the full country code when entering the recipient’s mobile number. For example: To send an SMS to Australian SMS number: **61487799888** To field: **61487799888@61FKQ4A1.sms.notifyre.com** To send an SMS to Unites States SMS number: **13072221234** To field: **13072221234@61FKQ4A1.sms.us.notifyre.com** - [Getting Started](https://support.notifyre.com/getting-started?hsLang=en) - [Fax](https://support.notifyre.com/fax?hsLang=en#main-content) - [Sending Fax](https://support.notifyre.com/fax?hsLang=en#sending-fax) - [Receiving Fax](https://support.notifyre.com/fax?hsLang=en#receiving-fax) - [Fax Numbers & Porting](https://support.notifyre.com/fax?hsLang=en#fax-numbers-porting) - [General](https://support.notifyre.com/fax?hsLang=en#general) - [Compliance](https://support.notifyre.com/fax?hsLang=en#compliance) - [SMS & MMS](https://support.notifyre.com/sms-mms?hsLang=en#main-content) - [General](https://support.notifyre.com/sms-mms?hsLang=en#general) - [Sending SMS & MMS](https://support.notifyre.com/sms-mms?hsLang=en#sending-sms-mms) - [Receiving SMS & MMS](https://support.notifyre.com/sms-mms?hsLang=en#receiving-sms-mms) - [10DLC Registration](https://support.notifyre.com/sms-mms?hsLang=en#10dlc-registration) - [SMS Sender ID Register (AU)](https://support.notifyre.com/sms-mms?hsLang=en#sms-sender-id-register-au) - [Compliance](https://support.notifyre.com/sms-mms?hsLang=en#compliance) - [SMS Templates](https://support.notifyre.com/sms-mms?hsLang=en#sms-templates) - [Contacts](https://support.notifyre.com/contacts?hsLang=en) - [Account & Security](https://support.notifyre.com/account-security?hsLang=en#main-content) - [Security](https://support.notifyre.com/account-security?hsLang=en#security) - [Team Management](https://support.notifyre.com/account-security?hsLang=en#team-management) - [Billing & Plans](https://support.notifyre.com/billing-plans?hsLang=en) - [Integrations & Apps](https://support.notifyre.com/integrations-apps?hsLang=en#main-content) - [Notifyre App](https://support.notifyre.com/integrations-apps?hsLang=en#notifyre-app) - [Developers](https://support.notifyre.com/developers?hsLang=en#main-content) - [Webhooks](https://support.notifyre.com/developers?hsLang=en#webhooks) - [Frequently Asked Questions (FAQs)](https://support.notifyre.com/frequently-asked-questions-faqs?hsLang=en#main-content) - [Account Management FAQ](https://support.notifyre.com/frequently-asked-questions-faqs?hsLang=en#account-management-faq) - [Billing FAQ](https://support.notifyre.com/frequently-asked-questions-faqs?hsLang=en#billing-faq) - [Fax Send & Receive FAQ](https://support.notifyre.com/frequently-asked-questions-faqs?hsLang=en#fax-send-receive-faq) - [SMS & MMS Send & Receive FAQ](https://support.notifyre.com/frequently-asked-questions-faqs?hsLang=en#sms-mms-send-receive-faq) [![Chill listening crop-3](https://support.notifyre.com/hs-fs/hubfs/Notifyre-2023-dark-1675x356-1.png?width=112&height=24&name=Notifyre-2023-dark-1675x356-1.png "Chill listening crop-3")](http://notifyre.com) | [United States: Contact Support![new-tab-icon](https://support.notifyre.com/hubfs/new-tab-icon.svg)](https://notifyre.com/us/contact-support)    | [Australia: Contact Support![new-tab-icon](https://support.notifyre.com/hubfs/new-tab-icon.svg)](https://notifyre.com/au/contact-support) | [Go to notifyre.com](https://notifyre.com/)![new-tab-icon](https://support.notifyre.com/hubfs/new-tab-icon.svg) | | --- | --- | --- | | Monday to Friday, 9:00am to 5:30pm (Mountain Time) | Monday to Friday, 8:00am to 5:30pm (AEST) |   | | [+1 866 620 3220](tel:+18666203220) | [1300 032 936](tel:1300032936) or [(07) 5227 8333](tel:+61752278333) |   |