SMS FAQs: Features

Table of Contents

What’s the outgoing rate limit for SMS?

Generally, the outgoing rate should not exceed 1 message a second.

How is my incoming message delivered to my application?

Incoming messages are posted to a Webhook URL provided by you. Kindly ensure your Webhook URL is publicly available. Please refer to https://ngrok.com/ how to make a public URLs to expose your local web server.

How can I receive SMS messages with my EnableX numbers?

For Incoming Messages, you may rent an EnableX Shared Phone Number and a Keyword. Using the Keyword, you can still use an EnableX Shared Phone Number to receive incoming SMS when the sender inputs the Keyword within the message body. In this case, your SMS will be delivered to a Webhook URL defined by you as above.

Can I send bulk SMS?

Yes! You can send bulk SMS. In a single API Post, you can post to up to 500 recipients. Therefore, to cover your list you would do multiple API Posts. Please note sending bulk SMS will be subject to rate-limit set against your account and also the regulation imposed by the destination country operator. For example US mobile operators limits the number of SMS messages that can be sent a day.

Can a Sender ID be set for an outbound text message?

In general, you can set any alphanumeric Sender ID for sending SMS in many countries. See list below. However, certain countries like US & Canada require you to purchase a long code. This is because of the telecom regulations.

Dynamic sender IDs may be used as SenderID for messages towards international destination. However, depending each country’s telecom regulations, the Sender ID may be replaced by the local carriers.

What is the difference between A2P and P2P SMS?

A2P is SMS message sent from an application to a person’s mobile sim card and vice versa. P2P is a mobile sim card originated message to a mobile sim card terminated message.