This qualitative case study explores changes in professional social media use during and post the covid-19-caused lockdowns. The paper contributes to sustainability literature, information systems research and has theoretical and practical implications. The findings highlight potential positive changes in organisational routines towards more environmentally sustainable practices, specifically a significant reduction in business travel continuing after the lockdown. These changes were enabled through changes in social media use and are sustained through changes in organisational culture. Further, some negative side effects of changes in social media use, specifically, stress and information overload are highlighted. A model for explaining sustained changes in technology use is presented and discussed. Additionally, the study contributes to methodology development by applying and describing the use of remote video recorded and automatically transcribed interviews for qualitative research.