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Can we send SMS from one country to all over the world?

Patil, Trupti 0 Reputation points
2025-07-15T07:13:26.74+00:00

Hello,

We are using ACS and wanted to implement SMS service. As per the https://learn.microsoft.com/en-us/azure/communication-services/concepts/sms/concepts, send SMS service is enabled only in selected countries.

My question is, as per the above link, let's take an example of Sweden. If we have Sweden enabled SMS number, using which we can send the SMS, can we send SMS to all over the world? or is there any check points?

Regards,

Trupti

Azure Communication Services

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  1. RAMAMURTHY MAKARAPU 0 Reputation points Microsoft External Staff Moderator
    2025-08-01T05:24:19.1133333+00:00

    Hi @Patil, Trupti

    In Azure Communication Services (ACS), SMS sending capabilities are subject to certain limitations and regulations, especially regarding international SMS delivery.

    We take an example country like Sweden.

    If you have a Sweden-enabled SMS number (a number provisioned by ACS for Sweden):

    You can send SMS messages to recipients in Sweden, and possibly to international destinations, but:

    Key Checkpoints / Limitations:

    1. Country-specific sending restrictions:

    • ACS does not guarantee global sending from every number.
    • Just because you have a Swedish number doesn't mean you can send SMS globally. ACS restricts SMS sending based on origin-destination country combinations.
    • For example, a Swedish number might not be allowed to send SMS to the U.S. or India due to regulatory or commercial limitations.
    • Here is the documentation link to check country:-

    Country/region availability of telephone numbers and subscription eligibility - An Azure Communication Services article | Microsoft Learn

    2. Compliance and telecom regulations:

    • Some countries require local sender IDs, registration, or pre-approval to receive SMS.
    • Certain destinations block international SMS from foreign numbers to prevent spam.

    3. Sender ID behavior:

    • In some countries, numeric sender IDs (like your Sweden number) may be overridden or blocked.
    • Your sender ID might appear as "unknown" or a shortcode, or the message might be silently dropped.

    4. ACS global sending support list:

    5. Charges and delivery success:

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