Possible Duplicate:
07000
<a href="mailto:first@mail.com; second@mail.com; third@mail.com">Send</a>
解决方法
“There are no safe means of assigning multiple recipients to a single
mailto: link via HTML. There are safe,non-HTML,ways of assigning
multiple recipients from a mailto: link.”
http://www.sightspecific.com/~mosh/www_faq/multrec.html
要快速解决您的问题,请更改您的到逗号,并消除电子邮件地址之间的空格
<a href='mailto:person1@domain.com,person2@domain.com'>Email Us</a>