I think your comment conflates purpose and efficiency. This might be because you've only used slack for a few days now, and haven't realized its full power.
While email can be used for group communication, it's not ideal for the typical, constant interactions of a small team. Let's consider one use case. In email, file sharing with an individual is a multi-step process (new message, select recipient, insert subject, add attachment, write comments, send). In slack, you click upload, select file, and it's sent. No formality or friction in creating a new thread, selecting recipients, ad infinitum. Not to mention, it's hard to discover all the files shared between you and a group of people via email. This is important in an organization. A similar argument could be made for search and group messaging.
This snap judgement is the equivalent of suggesting that you'd forgo wearing gloves in the winter because wrapping warm pieces of fabric around your hands serves the same purpose. Purpose ≠ efficiency.
p.s. the desktop app > keeping a tab constantly open :)
While email can be used for group communication, it's not ideal for the typical, constant interactions of a small team. Let's consider one use case. In email, file sharing with an individual is a multi-step process (new message, select recipient, insert subject, add attachment, write comments, send). In slack, you click upload, select file, and it's sent. No formality or friction in creating a new thread, selecting recipients, ad infinitum. Not to mention, it's hard to discover all the files shared between you and a group of people via email. This is important in an organization. A similar argument could be made for search and group messaging.
This snap judgement is the equivalent of suggesting that you'd forgo wearing gloves in the winter because wrapping warm pieces of fabric around your hands serves the same purpose. Purpose ≠ efficiency.
p.s. the desktop app > keeping a tab constantly open :)