Compliance for international SMS texting varies per country. When in doubt, find out the local compliance and then select one of the options below that is best suited for your needs. This article explains how international SMS texting works using two-way and one-way messaging.

Two-way messaging allows the end-user to receive a Mobile Terminated (MT) SMS message and to send a Mobile Originated (MO) SMS message. Depending on your country's requirements, you may use a long code or short code to send a two-way message.

Some types of messaging programs may only require a one-way communication to the consumer, in which case neither a short code nor a long number is necessary. The consumer cannot reply to this type of message. The originator of the message (the "number" it appears to come from) can be set to an alphanumeric string, such as a brand name, depending on rules and regulations in the relevant country.

Send SMS messages using the GSM alphabet? (For Windows users)

In the SMS Campaign Manager, you can create a text message up to 160 characters by using the GSM alphabet. Windows users can compose the message content without having to change the character set of the entire keyboard, by using Character Map, the built-in Windows application.

1. On your Windows device, open Character Map.
2. In Character Set, select the DOS language. For example, if you want to enter Greek language text in your message, select DOS Greek.
3. In Characters to Copy, select the letters to form the word or phrase.
4. Click Copy.
5. In Acoustic Campaign's SMS template, paste the text into the SMS message body.