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Re:Slack Wants to Replace Email. Is That What We Want? by leetcrew on Wednesday June 19, 2019 @05:31PM (#20227568)
> How easy is it on Slack to contact a person outside of your company?

in general, contacting arbitrary people outside your org is just not a use case slack supports.

that said, the slack administrator can create certain channels that "bridge" two or more organizations' slacks. this makes it easy to chat with business partners without necessarily giving them access to all the other channels. you can dm these people if the admin chooses to allow it.

Re:Slack Wants to Replace Email. Is That What We Want? by AnimalMuppet on Wednesday June 19, 2019 @05:48PM (#20227715)
So, no, Slack is not replacing email. Most of us have exactly no interest in an email "replacement" where you need the administrator's approval to talk to people outside your organization.

For in-organization email... they might. Outside, no way.

Re:Slack Wants to Replace Email. Is That What We Want? by leetcrew on Wednesday June 19, 2019 @06:42PM (#20228073)
depends what you use email for. it's not gonna work well for corresponding with your grandma, but I personally prefer it for work comms. ymmv.