omparison and contracting are time-consuming
Another disadvantage is that it takes time to use an SMS sending service. The number of SMS sending service providers telegram data is increasing, and each one offers its own unique service. Just comparing the content and cost of the services can be quite time-consuming, and it can take a long time to sign a contract and start using the back to back operation: find out how it works service. If you want to maximize cost performance, you may not be able to decide on a contract right away, which can be a problem as you may not be able to start using the service right away.
It takes work to come up with creative messages
The disadvantage of using an SMS sending service to send SMS en masse is that unless you put effort into the message, it will not be cost-effective. Since the number of characters is limited, it will be difficult to include everything you want to say in the message. You will need to create a link to a website to lithuania phone number explain the details or provide a coupon. Creating the SMS itself does not require much effort, but creating separate content can be costly.