It is very similar to the steps mentioned in the topic "How do I invite readers to my Channel".
Step 1: Select ‘Add Reader’ in the Reader section of the curator interface
Step 2: Add the Email address of the reader(s) that you want to invite. You can also add the Name (optional).
Step 3: Click ‘Generate code’ and you will receive a pre-generated password via email.
This password is connected to the user's email address which you entered in step 2.
Note: You can check if the user has opened the app or not in the user management list and re-invite him if necessary
Then you can share the login details with the user in a more formal and personalized way through your company email or share it in a more informal way via WhatsApp for example. The choice is yours!!