Recommendations and restrictions on sending SMS and SmartSMS

The delivery rate of your SMS or SmartSMS messages may depend on the destination country.
Check these recommendations and restrictions you should consider to avoid underperformance.



  • To add an unsubscribe link to your message, just use our !remove code. 
    The !remove code will be replaced by a 35-char unsubscribe link. Contacts who tap it will instantly stop getting any messages from you (SMS, emails, etc.).
  • To define where the page link appears in your SmartSMS, use the code !link.
    For example: Sign-up now here: !link. Never lose an exclusive offer again.
  • Merge codes may cause your live message to exceed the character limit. Why and how to prevent it?



  • If a contact is abroad while receiving your message, the message sender may be different than the one you choose at the time of sending!
    It will depend on how each country treats promotional messages.
    For example: If you your message sender is your brand name (MyBrand), in some countries this name will be shown but in other cases a number may be displayed.
  • Not every mobile network supports Unicode.
    However, in the specific case of the Dominican Republic, it's only possible to send messages with Unicode encoding.

The difference between Unicode and GSM encoding is related to the number of bits that each character takes in text messages.
Unicode encoding supports less than half of the characters compared to GSM.
However, by choosing Unicode encoding, you can include more chars and symbols in addition to the predefined ones (eg. Chinese or Arabic chars, emojis, etc.).

  • Some CDMA-based mobile operators in the US and other parts of the world may cut your SMS off after 138 chars. Why? 
  • Some countries (eg. Colombia) don't support SMS delivery reports. So the actual perception of your delivery reports can be affected. Why?


Countries with delivery restrictions

Normally, it's not possible to send SMS / SmartSMS to the countries listed below.

However, this restriction can be analysed on a case-by-case basis. If you would like to send messages to any of these countries, please contact us through the "Help" menu in your account.

  • Andorra
  • Australia
  • Austria
  • Bahamas
  • Bangladesh
  • Belgium
  • Benin
  • Bosnia and Herzegovina
  • Botswana
  • Bulgaria
  • Canada
  • China
  • Croatia
  • Czech Republic
  • Denmark
  • Egypt
  • Estonia
  • Ethiopia
  • Finland
  • Guadeloupe
  • Germany
  • Gibraltar
  • Greece
  • Hungary
  • India
  • Indonesia
  • Iran
  • Ireland
  • Israel
  • Japan
  • Jordan
  • Kazakhstan
  • Kuwait
  • Lebanon
  • Lithuania
  • Luxembourg
  • Macau
  • Macedonia
  • Malaysia
  • Morocco
  • Nederlands
  • Nepal
  • New Zealand
  • Nigeria
  • Norway
  • Pakistan
  • Philippines
  • Poland
  • Puerto Rico
  • Romania
  • Russia
  • Rwanda
  • Saudi Arabia
  • Serbia
  • Singapore
  • Slovakia
  • Slovenia
  • Sweden
  • Switzerland
  • Thailand
  • Trinidad and Tobago
  • Turkey
  • Uganda
  • Ukraine
  • United Arab Emirates
  • United States of America
  • Uzbekistan