Why don’t you just cut and paste on your computer from an online version of tehillim onto your email.
I find this site useful for basic tanach and such.
I hope the mods will allow this, it is wiki of seforim. http://he.wikisource.org/wiki/%D7%AA%D7%94%D7%9C%D7%99%D7%9D_%D7%A7%D7%99%D7%98