Sending out bulk SMS messages to your customers is fast and cost-effective. The vast majority of people have their phones with them throughout the day, so SMS offers the best chance of your message being read. More research has found that nine out of 10 people open text messages within three minutes of receiving them. Even if people are only opening the message to quieten the beeping and turn off the flashing incoming message alert, they could soon be drawn in by the messaging and special offers within. In addition, text messages are well-known for their reliable delivery of time-sensitive messages, making it your best bet to encourage customer engagement.