Hi Ambitious,
Glad it was of some help.
The mail() function is designed to send mails usuing SMTP so it won't work with services such as hotmail, yahoo or gmail. You'd need to use an SMTP server running on your machine, or use your ISP's or company's (if internal use) for sending.
As for HTML emails, when calling the mail() function just pass it back HTML (fully formatted) at it will send an H
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