Give chompSMS a try. It's a souped-up replacement to the built-in Messaging application, just with a heap more features and it's super FAST.
*** 10+ million downloads ****
Frustrated with the built-in Messaging app. Wish it was FASTER with lots more CUSTOMIZATION options?
Then chompSMS is for you, with lots of extra features like Quick Reply, Quick Compose, Schedule Future Messages, Passcode Lock, Privacy, Emoji Icons, Pre-Defined Text Snippets, Signatures, heaps of customization options (notifications, ringtones, colors, fonts, wallpapers), Blacklisting and much more!
Simply the FASTEST messaging app on Android phones.
Give it a try!