An Amazon driver left the tip of his finger in a letterbox - after ripping it off while delivering a parcel.
Gareth Thompson's bone was left sticking out following the bizarre accident last month.
The dad-of-three, from Plymouth, Devon, had to have a partial amputation and has not worked since.
He said: 'I was only posting an A4 parcel through the letterbox. But as the flap snapped down it caught my finger.
'I ripped my hand away and left the tip of my finger in the customer's door - which probably gave them the fright of their life!'
Mr Thompson, 40, started working for shopping giant Amazon through firm SCR Logistics last year.
He gave up his 20-year career as an electrical engineer to try and spend more time with his family.
But the new job take a gruesome turn on December 13, when Mr Thompson posted a parcel in his home city.
He instinctively pulled his hand away after getting it stuck, but the sharp flap severed his the top part of his index finger clean off.
'In the moment I forgot to take the bit of my finger lodged in the letter box, and I feel sorry for whoever's house it was.
'When they look for their parcel, they'll find part of my finger along with it!'
Mr Thompson called his line manager to inform them of his accident, but claims at first they didn't believe him.
Once they were convinced he was telling the truth, Mr Thompson alleges he was instructed to drop the van off back at the depot before going to hospital.
'I saw a surgeon and was given local anesthetic, and then booked in for a partial amputation the next day.
'I am yet to return to work, but still haven't heard at all from either Amazon or SCR - not even a text to ask if I'm okay.'
An Amazon spokesperson said: 'We're looking into this with the delivery service provider, and we wish Gareth a speedy recovery.'