When I tried Match I was pretty experienced and successful with the whole on-line "dating" thing. At that point I had pretty much used all the free sites. Heard nothing but great things so gave it a shot and pretty much was an epic fail. I thought perhaps it's because it's a paid site, I was really baffled. I ended up signing up and paying on another site and like the free sites I was successful. If I was successful with Match I wouldn't have cared that I got a lot of spam e-mails but that compounded my frustration.
To cut down on the time you spend you should draft up an email greeting. Mine talks about myself and what I do is usually towards the end add in something that pertains to her (likes football as well or a single parent like myself or loves to cook as I do, etc.) so it doesn't come off as a generic e-mail that she'll think you've sent to many other women.
The beginning of my e-mail starts like this and has been a gold mine for me "I'm definitely the man you are looking for but first is this a real profile?" I have never gotten a negative reply back. Here's what I start if off with, may be your style or it may not and obviously you need more than an opening but besides Match I rarely don't get feedback from it. Below is what I use and after the "me" time sentence I'll sometimes put in something that she and I both like or have in common. If her profile is short or I don't see anything that we have in common I won't put anything.
"I'm definitely the man you are looking for but first is this a real personal profile? To be honest, I never thought I would sign up on a dating website but I know someone who did on here and said it was a great place to find someone who is attractive and smart and has it together and the kind of women I would want to meet so I browsed some of the profiles in here and saw yours and had to reply to you. I love to have fun and always up for anything and I am an excellent cook! I like to exercise and currently doing this workout called Insanity which is killing me. I was born and raised in Texas but lived in NYC for 10 years and I reside in Austin now. I am a single father of two little girls that I have half the time and a huge part of their lives but that also leaves me with 50% of "me" time. Would love to get to know you more so if interested write back
"
ETA: Just enough information but not overload. When she replies I then go into my personality and a bit more detailed oriented. Generally found the few sentence initial e-mail or the one that reads like a book doesn't work. Just enough information to wet their appetite and get them to respond.