Question

We use different emails in each project and we always get that nasty message when linking to a Notion page in Slack. Is there any way to remove it?

Not everyone may have access to the link you shared.
You can give them access to the page:

Comments

I am suffering with it too.
All the people in my slack channel has full access to the notion page I am sending the link and that message pops.
I couldn't find any config to stop it.

Answer 1

You will have to disconnect the integration that connect your Notion and Slack