This won't work in all browsers, your best bet for this sort of thing 
is to use a CGI script.

> -----Original Message-----
> From: obrient@m... 
> [mailto:obrient@m...]
> Sent: 23 August 2000 14:49
> To: html_code_clinic@p...
> Subject: FW: [html_code_clinic] RE: Subject line in mail message
> 
> 
> It's all about name and value pairs.  always separate the 
> name and value
> with the ? and separate pairs with a &.
> 
> Therefore this will send me a mail with a suject of "hello" 
> and flag it a
> high priority
> 
> <a href
> ="mailto:obrient@m...?subject=hello&importance
> =high"> mail
> me urgently </a>
> 
> thanks,
> 
> 
> -----Original Message-----
> From: andy@a... [mailto:andy@a...]
> Sent: Wednesday, August 23, 2000 1:34 AM
> To: HTML Code Clinic
> Subject: [html_code_clinic] Subject line in mail message
> 
> 
> Hi
> 
> Does anyone know how to automatically place a subject line in 
> a mail client 
> following a mail to tag?
> 
> <A href="mailto:email address | subjectline" mail me </A>
> 
> Regards
> 
> Andy Green
> 
> 
>