Having worked in political advocacy, what you're wanting is exactly the right way to go.
It's almost impossible to get an email to your actual representative. What you want to do is get your sentiment to their aide via email. Simply put, your subject should be one of:
"Please oppose Senate Bill <number>" or "Please support Senate Bill <number>". Make sure you know if it's a senate bill or a house bill, and make sure you know the number. If you can't be bothered to perform that simple amount of research, then it's a signal to them you probably aren't a voter, or don't have strong opinions on the matter (right or wrong).
In the contents of the email, which probably won't be read, but in the case that they are, state your name, district (if applicable), and whether you're registered to vote, and if it's for their party, then say so. If it isn't, omit it.
After that, do whatever you like, but keep it brief, polite and on-topic.
It's almost impossible to get an email to your actual representative. What you want to do is get your sentiment to their aide via email. Simply put, your subject should be one of:
"Please oppose Senate Bill <number>" or "Please support Senate Bill <number>". Make sure you know if it's a senate bill or a house bill, and make sure you know the number. If you can't be bothered to perform that simple amount of research, then it's a signal to them you probably aren't a voter, or don't have strong opinions on the matter (right or wrong).
In the contents of the email, which probably won't be read, but in the case that they are, state your name, district (if applicable), and whether you're registered to vote, and if it's for their party, then say so. If it isn't, omit it.
After that, do whatever you like, but keep it brief, polite and on-topic.