Forty-five Russophone families in Estonia, Germany and Sweden answered semi-structured questionnaires about their sociolinguistic characteristics and participated in in-depth interviews regarding language use, language transmission and maintenance, and attitudes to all these processes. This comparative analysis of the family context helps to explain the variation in the development of linguistic identities and language-use strategies. We identified clear similarities and differences between these families, especially regarding reported digital language practices among immigrant families. The data analysis showed that the use of digital technologies has an impact on the reported language practices among the families but not necessarily on the use of Russian as a heritage language. Most families highlighted the intensification of internet-based communication with extended family members and the supportive effect of digital technologies on intergenerational heritage language transmission, since younger family members gained more access to Russian via the internet. But the role of digital technologies alone is limited when it comes to intergenerational heritage language transmission and other factors, such as the efforts of parents and the agency of children, seem to be more important. Still, the joint use of digital technologies has a positive effect, especially in those families where the children are actively involved in digital communication.