Bulk Synthesis?

[StouterTaru]

snip

Using the game's macro system is not against the ToS, but using a 3rd party program to automate hitting buttons is, which is what the person you responded to was talking about.

Also, 99 is the max at one time for quick synthesis. Unless it stacks beyond 99, you can't hold 9999 of any item in your inventory at the same time. If you quick synth 9999 items without coming back 100 times during your afk then you are doing something against the ToS.