There's some great options with receiving replies to text messages you send out.
Text Marketer were a pioneer in offering a free reply number with every account. This means people can reply to messages you send them via your messagebox account. These replies will be routed to you via email.
There's a couple of things you should be aware of;
- Using the free reply number, people can only reply to you if you have sent them a message from your messagebox account within the last 7 days and the sender ID is the number.
- If you want to be able to receive replies after that timescale and/or 'cold' enquiries to a text number you would need a txtUs number http://www.textmarketer.co.uk/txtus
- There is no API support for free reply numbers, only txtUs numbers