A mortgagor, as long as his right to redeem subsists, shall be entitled from time to time, at reasonable times, on his request, and at his own cost, and on payment of the mortgagee's costs and expenses in this behalf, to inspect and make copies or abstracts of or extracts from the documents of title relating to the mortgaged property in the custody or power of the mortgagee.

This subsection applies to mortgages made after the thirty-first day of December, eighteen hundred and eighty-one, and takes effect notwithstanding any stipulation to the contrary.

A mortgagee, whose mortgage is surrendered or otherwise extinguished, shall not be liable on account of delivering documents of title in his possession to the person not having the best right thereto, unless he has notice of the right or claim of a person having a better right, whether by virtue of a right to require a surrender or re-conveyance or otherwise.