Letter with an open envelope and a piece of paper with a question mark sticking out on blue background

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Size: 5000px × 5000px
Photo credit: © Andreas Prott / Alamy / Afripics
License: Royalty Free
Model Released: No

Keywords: background, blue, communication, document, envelope, faq, greeting, invitation, letter, mark, message, open, paper, postal, question, stationery, white