Send welcome mail for all users at once


I have enrolled all my users on ERPNext but I did not configure the email accounts yet (deliberately). Now I’m done with all configuration and I want to send the welcome mail at once to everyone. Is there any way to do that? I saw this link - How to set default password for all user at once, But I don’t want to set a default password for them. I want the welcome email instead.

I also tried the bulk update tool and changed this send_welcome_email to “1” , But no emails are sent.

please help. Thanks