I have a workflow which needs to send an email to a list of users. The configuration for the distribution list has already been done with all the users and their emails.


The configuration for email usage has also been done.

But the email is not sent to all the users in the list all the time. In some cases I have all my users getting the email, in others I have only 2 of the users receiving the email and in some cases only 4 users receive the email. I tried adding the users to a group and added the group to the distribution but the issue was the same.
Has anyone faced a similar issue before? Are there additional configurations needed?
Thank you for your help
Kind Regards