Thank you, but the problem I am facing is a bit little strange;
When the author submits a manuscript, he gets a submission confirmation email immediately, which is fine.
I have created accounts for the J manager, Editor and Reviewer. Any of these users when they do their duties inside the journal they can not send emails (automatically, or manually) via the OJS.
I tried to assign an Editor, assign a Reviewer, Review the submission using the super admin account, the emailing system working perfectly. So, why the J Manager, Editor and Reviewer users cannot send emails !!! I need your advice, please.