For my research, a lot of it is communicated in email messages and Slack. I had wanted to switch to a better lab book to keep track of everything, but the complete inability to link to an email is a show stopper.
I note that with the “sister” application, Agenda, I can simply drop an email in to get a link to that email. But Agenda does not properly keep track of research progress, it is an Agenda not a lab notebook. Since you already share code, can’t you get that feature?
In general, as you learned from other comments, the hyperlinking in this app is subpar.