Why my bulk SMS messages failed to send
It is now mandatory to register sender IDs before you can get an online SMS message delivered to the MTN numbers in Nigeria. Every sender ID to be used must be registered with MTN. In other words, messages are not delivering to MTN numbers with unregistered sender IDs.
To test SMS delivery on our bulk text messaging platform as a new user, you can use freesmsplan or click submit sender ID to choose a sender ID for your message content and send it to one of your GSM telephone numbers. Once your message is delivered, you can go-ahead to submit sender IDs that you proposed to be using in sending your messages on our platform for registration.
Please, note that sender ID registration does not overrule the existing Do-Not-Disturb (DND) policy.