Hi, I just read through the ASF's Slack policy, for users who don't have an Apache account, we need to invite them manually or using Slack's 6 days expired link. See below please:
Other contributors and interested parties (observers, former members, software evaluators, members of the media, those without an @apache.org address) who want to participate in channels in the ASF workspace can use a guest account. To do this, someone already part of the workspace needs to invite the interested party or parties: 1. In the Slack app, click the "ASF" header at the top left. 2. Select Invite people to ASF. 3. Use the Single channel guests option and, in the form that appears, provide the email addresses of the people you would like to invite to a specific channel. see https://infra.apache.org/slack.html Best Regards! @ Zhiyuan Ju <https://github.com/juzhiyuan>
