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:
Feature	     	Syntax
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

Notes:
    " " (beginning and ending double quotes) are necessary if any spaces are used
    Use the ? (question mark) and only one "?", when providing any entry beyond e-mail address

    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 line. &body=Second line. &body=Third Line. ">
    IMPORTANT NOTE: This feature will NOT work with all e-mail programs, in which case the body information appears as a single line.

    Features may be used in combination

    MailTo with Subject, One Recipient and Two Copies
    <a href="mailto:astark1@unl.edu?subject=MailTo Comments&cc=ASTARK1@UNL.EDU,id@internet.node">
    Remember to use only one ? (question mark), when providing multiple entries beyond e-mail address