Related Clues:

• 'This might be of interest ...,' for short
• Message starter, for short
• Incidentally, in a txt msg
• Sticky-note initialism
• Incidentally, in texting ... and a hint to three long puzzle answers
• 'Oh, before I forget ...,' in a text
• "Just so you know," in a text
• Inits. at the start of a memo
• Cousin of FWIW
• Texter's 'Oh, yeah ...'
• BTW
• 'Thought I should share,' briefly
• "Thought I should share," briefly
• Start of a modern afterthought
• "Incidentally," to a texter