Hi euduardo,
Update 2024-06-19: The lotus problem has been identified and solved for our customer. Please contact us if you still have issues and need help.
Update 2024-05-20: We were able to identify that this issue occurs with HCL Domino (IBM Lotus). This was discovered through a report by another customer. We were able to reproduce it. As far as we know it does not occur on other mail servers. We're in the process of developing a fix. Unfortunately we cannot test with all mail servers and Confluence add-ons out there. Unfortunately in some instances less frequently used configurations may lead to bugs. We always give our best to fix any issue that customers report as fast as possible.
thank you for giving out app a try. Normally it will upload embedded pictures. If you could open a ticket at mailto.wiki - Send Emails to Confluence | Support - Jira Service Management (atlassian.net) we can take a look at your case. We're very interested in resolving this issue.
All the Best
The CraftCoders Support Team