ZapitSMS is a free tool that allows you send SMS from your computer. It can handle multiple accounts at once and gives you the ability to import contacts from MS Outlook address book or any database. Nothing easier, just select the recipient from the list, write your message and then click on the "Send SMS" button. Depending on your choice, it can send the message immediately or on a specific date and time . ZapitSMS is able to send multiple SMS at aonce, which is a convenient feature for your marketing campaign.