What is the unstressed vowel in postage?

The unstressed vowel in "postage" is the "a" in the first syllable.

Here's why:

* Stress: The word "postage" has the stress on the second syllable ("age").

* Unstressed Vowels: Unstressed vowels often have a reduced pronunciation, sometimes sounding like a schwa sound (ə). In "postage," the "a" in the first syllable is pronounced with a schwa sound.

Let me know if you have any other words you'd like to analyze!