@Samuel_Gervais are you trying to send to a user within the system? If yes, then they should have ‘Send Notifications for Transactions I Follow’ as checked.
Same issue here, I configured a own mail server that is working, so not a predefined, and I am using your SaaS solution.
I think the smtp needs authentication, but I cannot fill this in. it just asks a smtp server…
The weirdest thing is: I added a contact with no client attached to it → Doesn’t work.
Mailing from a client where I changed the email address to the contact one → Worked
So it seems to have something to do with contacts…
Some people using cloud servers like Amazon AWS with Amazons IPs should also check if their mailserver / smtp server is blacklisted. The mails wont be delivered in this case.
I am facing a similar issue, and I get the same errors while trying to send the messages to a user within the system, I have checked the ‘Send Notifications for Transactions I Follow’
Can you suggest anything else that can be done to overcome the error.