
Using a non-unique Sender ID can degrade delivery success of your messages. Our general recommendation is to always use your own Sender ID instead of using "SMSto" or generic values like "Info".

If you regularly use a specific Sender ID, you can configure this Sender ID in your account settings and it will be used by default: When composing an SMS campaign, simply use this field to fill in your desired Sender ID:
SMS SENDER ID FORMAT CODE
Please note that when using a rented long code as a sender ID, it needs to be used in the international format but without the leading plus sign (+) For more information on which countries can use sender ID for SMS traffic, please contact your Account Manager. The capability for a dynamic alphanumeric Sender ID is based on country and carrier requirements and thus cannot be guaranteed for each country. A short or long code is required to be used for inbound messages. Alphanumeric sender IDs are a combination of alphabetic characters and numbers that can be used to identify your business. LimitationĪlphabetical sender IDs cannot be replied to and hence they cannot be used for 2-way-communication. You can determine which countries support alphanumeric SenderID. To learn more about these restrictions regarding SenderID, please visit International SenderID Regulations and Requirements (list of countries). SMS.to has adopted the general restrictions in some countries where alphanumeric SenderID is not supported by default. Using a SenderID makes the sender of the SMS identifiable to the recipient of the message.

The alphanumeric sender ID gives the sender the ability to send messages using a custom ID constructed from a combination of alpha (a-z, A-Z) and numeric (0-9) characters, including spaces/blanks. The SMS protocol technically limits the sender ID to max. A character-based sender ID, usually the brand or company name, is commonly used for SMS programs that are one-way (outbound only). Modified on: Wed, 17 Aug, 2022 at 12:11 PMĪ sender ID is an alphanumeric string, that can be used as the "from" address for SMS text messages that are sent.
