Angels and Free Will

[Ooo]

Is it true that angels don't have free will?

Would you believe whatever I said, Gem? You can read lots or books and online articles, watch lots of videos or documentaries, hear people make lots of claims. How would you know?
That's something for you to chew on

To answer your question then: first and foremost, you must come to fully appreciate that there is no other will but one—only One Infinite Creator, not two or three or many. That alone should be sufficient to understand that whether other separate "parts" have or have not "free" will is irrelevant because you are neither of those "parts" and the only true free will is that of the One Infinite Creator.

If the One Infinite may "grant" illusory "freedom" to any of its it holographic portions, it wouldn't be too hard to fathom that some other illusory portions of its One Being would be generated without said "freedom" (but then again, what is freedom? Is anyone truly free? How free, and in what sense?). Perhaps the biggest stumbling block in contemplating this possibility is that human beings tend to anthropomorphize everything, so that the idea of a human-looking "angel" without freewill would seem personally injurious.  

However, if you were to perceive these "angels" as flecks of light, then the idea would perhaps seem far more acceptable, if not altogether attractive.

And as anagogy pointed out, it also really depends on what you mean by term, "angel." Etymologically speaking, "angel" (Greek angelos) merely means "messenger" or "envoy." So in the actual sense of the word, my postman is quite literally an angel.

Or are they created before the veil, and thus don't have free will because it wasn't thought of?

The veil only applies to third density. The "angels" of which you speak do not experience evolution across the seven densities of awareness. Just take them as the personal "fingers" or the "extra hands" of the One Infinite Creator which can assume whatever form may be best fitted for the task. Some aid in the development of second density, others watch or guard over third, others assist higher-density entities, etc, etc.