Hi! Someone requested a book from me & I agreed to mail it to them, but now I found out that there is what looks to be a tiny pen mark on the bottom of the book (it's on the very bottom of the back cover and it's also on the bottom edge of the pages). I know this is not a remainder mark, so I'm wondering if it's still okay to mail this book? I'm not sure if I explained myself well. The ink dot is not inside the book - only on the outside. Thanks for any help you can give me! :-)

IMO this is postable. As long as their is no writing on text pages. If they can have a remainder mark I don't see that a pen mark would make it unpostable.

Okay, that's what I was thinking. Thanks for your input, and thanks for answering my other question, too. :-)

Think those can be considered 'remainder' marks - marks put there by the library or book seller.  The books are perfectly postable.  Pat

And remainder marks are not always giant red marker. Some stores use colored ball-point pen instead.

Either way, one line across the bottom of the book does not make the book unpostable, especially if the book is in good condition otherwise.

I see this phrase a lot, what is a remainder mark?

It's a mark on the bottom of the book. Booksellers often sell the remaining unsold portion of a printing (the "remainder") at a discount. To prevent you from returning it for a full refund they put the mark there.

Remainder marks can be on any page edges, top, bottom, or less common, sides. It could be a colored line, or maybe just a marker dot. Sometimes, they will cut off a small piece of the corner of the cover

In any case, writing (like a name) or marks are OK on page edges (but not dirt or stains).

Vic, if the book meets PBS guidelines, do not PM the receiver because then they will begin to expect it.  plus if they don't answer you, do you still send?