STFU && RTFM

If you’ve ever written a website in HTML, you are probably familiar with the MailTo-command, used to automatically start a new email message when the link is clicked. However, you can do so much more with the command. Here are some examples:
 

• Address message to multiple recipients
• Add entry in the “Subject” field
• Add entry in the “Copy To” or “CC” field
• Add entry in the “Blind Copy To” or “BCC” field
• Add entry in the “Body” field

 
Now, I’m sure you’re wondering how exactly we get the code to do this. Here’s how (click the link to see the effect):
 

• Simple MailTo
  • <a href=”mailto:recipient@server.tld”>
• MailTo with Multiple Recipients
  • <a href=”mailto:recipient@server.tld,recipient2@server.tld”>
• MailTo with Subject
  • <a href=”mailto:recipient@server.tld?subject=Comments from website”>
• MailTo with a Copy
  • <a href=”mailto:recipient@server.tld?cc=recipient2@server.tld”>
• MailTo with a Blind Copy
  • <a href=”mailto:recipient@server.tld?bcc=recipient2@server.tld”>
• MailTo with message already started in Body
  <a href=”mailto:recipient@server.tld?body=I am having trouble finding information on “>
• MailTo with multiline message in Body
  • <a href=”mailto:recipient@server.tld?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.

 
Of course, you can also combine the effect:
 

• MailTo with Subject, a Recipient, a Copy and a Blind Copy
  • <a href=”mailto:recipient@server.tld?subject=MailTo Comments&cc=recipient2@server.tld&bcc=id@internet.node”>

I use GMail a lot. I also send a lot of emails, many of those originating from mailto:-links. Hence, it is practical to have mailto:-links open in GMail.
 
This is quickly and simply achieved by going to Tools, Options, Applications. In the search-field, simply enter mailto, then use the Action-field to select GMail, Yahoo Mail or something else, like so:
 

 
Some installations of Firefox do not have the GMail-alternative. This is simply fixed. Open a new tab, then enter about:config in the address-bar. Into the filter enter
gecko.handlerService.AllowRegisterFromDifferentHost, then doubleclick the value so that it is set to true. Then copy/paste the following piece of Javascript to your Addressbar: javascript:window.navigator.registerProtocolHandler("mailto", "https://mail.google.com/mail/?extsrc=mailto&url=%s","Gmail"). When asked whether you want to add GMail as an application, answer “yes”.