Use Short Message Service-Short Message Service(SMS)-阿里云帮助中心

Re-integration for international messages

Yes, you need to re-integrate and test.

Message templates for the Chinese mainland are incompatible with those for international/Hong Kong, Macao and Taiwan messages. You must apply for new message templates for international/Hong Kong, Macao and Taiwan messages. For more information, see Apply for a message template.
You can use the same general-purpose message signature for messages sent to both the Chinese mainland and to international/Hong Kong, Macao, and Taiwan. However, you must apply for a new message signature for verification codes. For more information, see Apply for a message signature.

How do I disable Short Message Service?

You cannot directly disable Short Message Service. If you no longer need the service, you can do one of the following:

Go to the Users page in the RAM Access Control console. Filter for the RAM user that is currently using Short Message Service. Click the username to go to the User Information page and disable the AccessKey created by that user. This stops all API calls to the service.
In the Short Message Service console, go to the Signature Management and Template Management pages to delete your message signatures and message templates. If you stop sending messages, you will not incur new charges.

Can an individual user enable Short Message Service?

Because of real-name registration requirements for message signatures, only enterprise users can register signatures and send messages. As an individual user, you must prepare enterprise credentials and a letter of authorization to apply for a signature on behalf of an enterprise and apply for a message signature, or upgrade your account to an enterprise account.

Supported countries and regions

Short Message Service provides reliable message delivery to the Chinese mainland and over 200 other countries and regions. For a complete list, see Countries and regions. If the country or region you need is not on the list, contact us at aliyun_sms@service.aliyun.com.

How can I prevent SMS bombing?

SMS bombing is a type of attack where a malicious actor uses your website or application to trigger and send a large volume of unwanted messages to many users. Attackers often use automated tools to send messages in bulk, which harasses the recipients and can damage your brand and business. For more information, see SMS bombing and prevention.

Using SMS for pre-launch products

Individual users cannot apply for the service for a business that is not yet live. We recommend that you first upgrade your account to an enterprise account. For detailed instructions, see How do I change my individual real-name registration to an enterprise real-name registration?.
For enterprise users, if your product or website is not yet live, we recommend applying for a message signature that uses your company's abbreviation. After your product or website goes live, you must update the signature and resubmit it for approval.

Company authorization for individual users

Because of real-name registration requirements for message signatures, only enterprise users can register signatures and send messages. As an individual user, you must prepare enterprise credentials and a letter of authorization to apply for a signature on behalf of an enterprise and apply for a message signature, or upgrade your account to an enterprise account.

Service impact from account reports

Yes. If carriers report a high volume of complaints associated with your account, your ability to use message templates, use message signatures, or send messages may be restricted, or your service may be suspended.

Does Short Message Service support MMS?

Yes, Short Message Service supports MMS. If you want to send MMS messages, contact your business manager to activate this feature.

How can I get free messages for testing?

New enterprise users and individual users of Alibaba Cloud Communication can receive a free quota of messages if they meet the new user promotion rules. You can find details about the promotion in the Free Trial Center.

How to configure a network proxy

Short Message Service only supports access over the public network, but you can configure a proxy. For specific instructions, see Configure a proxy.

Template approval before purchase

Yes. Applying for message signatures and message templates is free. You are only charged for the messages you send. You can apply for message signatures and message templates before sending messages, or use system-provided templates. For billing details, see Billing overview.

How do I purchase Short Message Service?

Short Message Service offers both a pay-as-you-go model and packages. You can choose the billing method that best suits your business needs. For more information, see Billing overview.

Is a package purchase required?

No. Short Message Service uses a pay-as-you-go model by default. You can send messages as long as your account balance is sufficient. A package is an optional, cost-effective billing method. For billing details, see Billing overview.

Removing a contact for a previous company

If you need to remove a contact from an account that you can no longer manage, for example, after leaving a company or during an account handover, see Set contacts.

Can I send messages without internet?

Short Message Service requires your application to call an API to forward messages to the carrier's gateway, which then delivers them to the user's mobile device. Therefore, your application must have a stable connection to the public network to send messages.

Note

A user's device can receive SMS messages without being connected to a mobile data network or Wi-Fi. However, the recipient's SIM card must be active and have a valid number. Messages cannot be delivered to devices that are powered off, out of service, or have a suspended account.

Using non-mainland servers for mainland messages

No. You cannot use IP addresses from China (Hong Kong), China (Macao), China (Taiwan), and other countries and regions to send messages to numbers in the Chinese mainland. To send messages to the Chinese mainland, you must use an IP address located in the Chinese mainland.

Uncertainty about content compliance

The platform's documentation cannot list every restricted industry, business type, or sensitive keyword. If you have read the relevant review guidelines but are still unsure if your message content is compliant, you can get started and submit your application materials for review. Our team's review determines the final decision and feedback.

To increase the likelihood of approval, you must check your application against the official documentation before submission to ensure it does not violate any national laws, regulations, or requirements explicitly stated in our documents. After your application is approved by the platform, we submit the materials and message content to carriers for registration. You can begin sending messages only after the carriers complete the registration.