I've discovered Vodafone Text Centre does the job (see feature summary in the attached message). You can install it for free, but note that the cost of SMS messages you send using Text Centre goes on to your normal Vodafone mobile account.
There's a very comprehensive manual and online help. Make sure your Outlook isn't running before you start installing (use Task Manager to kill it if necessary).
In a test here in the office, I found that my first outgoing message was delivered in just a few seconds, whereas the reply took around 10 minutes to reach my Outlook inbox (you can choose to have the reply routed to your mobile instead, of course, which is quicker but means that you don't have access to Outlook's convenience features when forwarding or filing the reply).
If you're in the habit of leaving Outlook running when you leave the office, you can also get Text Centre to alert you by SMS when you receive an e-mail (or only for high-priority e-mails) or to send you an SMS alert of upcoming appointments.
Overall, I am impressed. With Vodafone Text Centre you can:
- Send text messages to individuals and groups from your PC, using your existing contacts and distribution lists.
- Choose to have replies sent to your mobile phone or to your e-mail inbox.
- Receive appointment reminders via text messages.
- Choose to receive text messages to notify you of urgent e-mails.