Hi my client has a valid essential licence and is using:
AcyMailing Essential 9.7.2 - Valid Until: 2025-08-12
Brevo SMTP (configuration checks and integration are done)
Acymailing has been working perfectly for them in the past.
For the last campaign when they send a test mail the content sends fine.
But when they send the same email via the queue (tried both manual and automatic) the content of the newsletter is completely blank and the subject is "(no subject)"
What is causing the issue please? I can PM you log in details if required.

To provide you with the best assistance possible, I kindly request that you submit a support ticket through our website at https://www.acymailing.com/support/. Our team will be able to efficiently and effectively provide you with the assistance you need.

Please note that our ticket support is exclusively available for our customers with an active Essential or Enterprise license. If your license has expired or you are using the Starter version, we kindly invite you to renew or upgrade your license prior to opening your support ticket.

Hi the issue was use of the Brevo (deprecated) connection.
I changed it to the latest Brevo connection in Acymailing