Greetings,
When our customer tries to send a newsletter, i can see they recieve this message inside the MessagingHandler Log.
Verifying recipient uniqueness.
2020-03-15 20:26:19.0706|INFO|EmailMarketing/MessagingHandler/Events|[993]: Removed 1 recipients from the collection due to uniqueness constraint.
2020-03-15 20:26:19.0706|INFO|EmailMarketing/MessagingHandler/Events|[993]: Recipient count after verification: '0'
They are doing a test sending, so only sending to themselves.
This has also happened when i try to send newsletter altough not all the time.
What does this message mean?