4 Pics 1 Word Puzzles

What is the 1 word (7 letters) answer to the puzzle below? Scroll down to see the answer!

4 Pics 1 Word Answer 7 letters for envelopes pouring out of red mailbox, woman with network of alphabet, women getting tested for eyeglasses, woman speaking words

Mailbox, Alphabet, Eyeglasses, Speak

The Answer is:

LETTERS
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