Traditional Mail is More Efficient Than Online Advertising Methods
maindevice.com
maindevice.com
...and at least 30 times more expensive.
Mailchimp campaign:
1000 mails sent
40 people open it
10 people visit the website
cost: $15
Snail mail campaign
1000 mails sent
100 people open it/read it
50 people visit the website
cost: $1500
It may be more efficient from a conversion perspective, but it's certainly not capital-efficient.
10 people visit the website - don't buy shit 50 people visit the website - they'll buy something