As one of the founders of the social media platform, Jack got his mom, Marcia, tweeting early.
"Both Jack's dad and I are entrepreneurs with small businesses, so I was delighted to see Jack create Twitter and bring it to life," Marcia tells PEOPLE. "And of course I was eager to send my first Tweet!"
Marcia joined Twitter in April 2006 – just one month after Jack sent the world's first tweet – and she has since been dubbed "the grandmother of Twitter" and now corresponds regularly with her son in 140-character messages.
Wishing my Mom @marciadorsey a happy Mother's day!— Jack (@jack) May 10, 2009
FYI... Not a fan of the beard. @jack has a great face. Like to see it.— Marcia Dorsey (@marciadorsey) June 12, 2015
Happy birthday to my mom, @marciadorsey!— Jack (@jack) January 11, 2013
This date/day is one of the BEST days of my LIFE! I am SO BLESSED...Happy Birthday Jack Patrick Dorsey, (aka) @jack!— Marcia Dorsey (@marciadorsey) November 19, 2013
@marciadorsey yes mom, i bought toothpaste— Jack (@jack) May 15, 2009
The oven is full of food.... Hope @jack is hungry....— Marcia Dorsey (@marciadorsey) December 21, 2010
"It didn't take any convincing," Marcia says of creating an account. "It was easy for me to catch on. And 10 years later I still use it every day."
Marcia – who enjoys tweeting a picture of the sunrise each morning – says it was no surprise to her that her son would be part of a team behind such a force in the social media world.
"Jack was a thoughtful and creative kid and those characteristics have stuck with him through the years," she says. "Growing up, he was always fast to pick up on new technologies and loved experimenting with things and ideas. Trains were his favorite."