Our new Skype beta version Supports SMS messaging from ACT!
It integrates with:
It provides a UI interface which lets you create SMS message templates including the ability to perform a "mail-merge" style replacment of ACT! field values in the actual message. You can send SMS messages using any of our providers to a contact, groups of contacts or selective contacts from a group.
You can also create ACT! histories containing the SMS message you sent for tracking purposes. The different providers handle replies in different ways. Skype won't allow users to reply to the messages in the US, the header isn't properly handled. RedOxygen will send the message with one of thier numbers which allow the user to reply. Replies get send to your registered email account.
Clickatell doesn't support replies either due to carrier limitations in the US. Should work find in other countries though. Google Voice supports replies as it uses your Google Voice number to send messages.
This version is currently beta but should be released early next week.