Can you manage a modern IT project without a tracker (Jira, Trello)? The consequences of working through chats and email.
Life Without a Tracker: A Road to Chaos
Working through email or messengers is a killer of productivity. Task history gets lost, priorities become blurred.
Why is a tracker needed?
It is a single "source of truth" for all project participants. You always see who is busy, what is on fire, and when to expect the result.