I dont buy in to the hardwood is the only wood for exterior joinery. redwood is redwood. its the same tree as the old boys used. beautiful to work, smell and finish especially with hand planes. its neither to hard and dry or to soft. and is classed as moderately durable anybody who neglects redwood neglects the last 200 years of historic joinery. that being said a thorough treatment with preserver sprayed all over helps to preserve it for decades and decades.
the door this is replacing is made from quebec yellow pine a thoroughly unsuitable wood and it lasted over a hundred years!
also using sapele from the congo is not at all good. its far to hard to use with hand tools and has a switchback grain.
as well as being unsound in its source.
Russian redwood is better than Swedish if you can get it btw
accoya the wonder wood whilst ticking ethical boxes is very soft and brittle. tricksy to glue and paint.
my next front door and frame will be in sapele. almost the same style but bead and flush. with draughtstrips and multipoint locking!
in summary as a woodworker redwood is my wood of choice for this stuff every time. for anyone wondering my least favourite wood is.....oak!