Is there a free trial available for HP Instant Ink when I purchase the HP Envy 5660?
Yes, HP offered one free month of HP Instant Ink service if you signed up within 7 days of purchasing the printer. You needed to complete HP Instant Ink sign-up and enter a promotional code at checkout within 7 days of purchasing an enrollment card or adding the printer to an HP Connected account. (Page 2)
From the official HP Envy 5660 E All-in-One Printer manual, page 2
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