Looking on the ‘Let’s be brief’ website I came across this interview with Vicky Simmon, the ‘Mean Mail’ founder.
Reference:
Ansel Neckles (not dated) Let’s Be Brief Attention: You’ve got Mean Mail Available at :https://www.letsbebrief.co.uk/vicky-simmons-mean-mail/ (Accessed: 30/9/21)
I like the tone of voice of these cards