Hi Team,
The custom sender email functionality was working fine until last day in the environment. Suddenly it had stopped working and the send email node is getting errored, and error message says, "Failed to send email".
Have anyone faced a similar issue, we have also observed that all the other mail functionality like process model is working fine. Please help us on this issue.
Thanks.
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Did you try to find some information in the log files? What kind of environment is this? Did you consider to open a support case?
Using On-Premise or Appian Cloud?