How the mailer should be?

Following are the points to be taken in count while designing and developing a mailer.

• Maximum width : 485-600px.
• Maximum weight : 60kb ( including HTML and images)
• Table should left aligned.
• Only inline style ( inside HTML element ) is allowed.
• No external style sheet and internal style sheet (inside the tag).
• Mapping is allowed.
• JavaScript is allowed.
• External JavaScript File (.js) is not allowed.
• form tag should open in a new window.
• Target for href and Form should be open in new window except for anchor tags used for email id.
• External images can't be called. Images need to be uploaded on Server only.
• Doctype is not allowed as it applies some default styles.
• html xmlns is not allowed.
• Iframe and noscript tags are not allowed.
• There should not be any comments in HTML page.
• 1 x 1 pixel tracking by the client / agency is not allowed.
• Comments are not allowed.