R
My team just started using Slack for a better, organized, clean way to chat rather than Whatsapp and Email.
And like @tomzi suggested, it would be perfect to have these features integrated in Churchtools, we wouldn't have to add everyone, have one more app installed or one more website to log in.
All our teams in the church - Service, Prayer, Worship, Youth, every group have it's own Whatsapp group, and that's chaotic when you're in two or more teams, plus the family, friends, work, study groups and private conversations.
We don't need video conference or group call, that's not so often needed, and if needed we can schedule that in Whatsapp or Skype.
We also use MeisterTask, but I don't know how that could work in ChurchTools.