HTML mailto: The options

Copied from zoomquiet.org :

The MailTo command can do more than enter a single e-mail address in the "Send To" field while activating your e-mail program. It can also: 

• Address message to multiple recipients  ,   (comma separating e-mail addresses) 
• Add entry in the "Subject" field  subject=Subject Field Text 
• Add entry in the "Copy To" or "CC" field  cc=id@internet.node 
• Add entry in the "Blind Copy To" or "BCC" field  bcc=id@internet.node 
• Add entry in the "Body" field  body=Your message here
• Within the body use "%0A" for a new line,
• use "%0A%0A" for a new line preceded by a blank line (paragraph), see example below.  

Notes: 

• " " (beginning and ending double quotes) are necessary if any spaces are used
• Mailto parameter should be preceded by "?" for the first or only parameter and "&" for second and subsequent parameter. 

Some examples, with actual HTML Code included, follow:

Simple MailTo

<a href="mailto:astark1@unl.edu">

MailTo with Multiple Recipients 

<a href="mailto:astark1@unl.edu,ASTARK1@UNL.EDU">

MailTo with Subject 

<a href="mailto:astark1@unl.edu?subject=Comments from MailTo Syntax Page">

MailTo with a Copy 

<a href="mailto:astark1@unl.edu?cc=ASTARK1@UNL.EDU">

MailTo with a Blind Copy 

<a href="mailto:astark1@unl.edu?bcc=ASTARK1@UNL.EDU">

MailTo with message already started in Body 

<a href="mailto:astark1@unl.edu?body=I am having trouble finding information on ">

MailTo with multiline message in Body 

<a href="mailto:astark1@unl.edu?body=The message's first paragraph.%0A%0aSecond paragraph.%0A%0AThird Paragraph.">

NOTE: Use "%0A" for a new line, use "%0A%0A" for a new line preceded by a blank line.

Features may be used in combination

MailTo with Subject, a Recipient, a Copy and a Blind Copy 

<a href="mailto:astark1@unl.edu?subject=MailTo Comments&cc=ASTARK1@UNL.EDU&bcc=id@internet.node">

Remember to use only one ? (question mark), when providing multiple entries beyond e-mail address