How to format the file of SMS recipients?
The SMS feature is currently available for:
- MAX accounts
- self-service accounts (Starter, Marketer, Creator) based in Poland, Germany, and Switzerland
This article applies to all account types.
Due to the increasing global risk of SMS mass-pumping attacks, please note that whenever you launch a campaign in a new market, you should familiarize yourself with the local, market-specific guidelines directly on our provider Vonage’s website.
We are unable to ensure optimal deliverability unless these requirements are met by our customers. In many cases, this means contacting Vonage directly (P2P) to complete the required formalities:
Country-Specific Features and Restrictions – Vonage API Support
You can upload a file including only one column with phone numbers. Multi-column files are currently not accepted.
It’s recommended that the phone numbers include a country prefix that starts with ‘+’, such as +48 882 111 111.
If the phones you want to upload don’t include the prefix, you can still upload them, and select a prefix that we will add in all the imported phone numbers that don’t include the prefix upon upload.
If your phone number formatting in the file is without a ‘+’ but contains a prefix the numbers can still be uploaded, but there’s a risk that in some cases the number will be interpreted as invalid.
