I am pretty sure that using mailto:soanso@gmail.com (with or without the http://) will only open your default mail program on your PC - same as from any other web page.
Unfortunately I have only used an alarm through the email service so cannot really help.
gnomethang
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"Once men turned their thinking over to machines in the hope that this would set them free. But that only permitted other men with machines to enslave them."
- The Reverend Mother Gaius Helen Mohiam