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One of our Smatermail user account when he click the auto-responder, it does not respond and the message at the bottom pop out as below image
After i check and verify, the user auto-responder message setting are using HTML format, and the font type is using without Smatermail supported font type, cause the user is using MS Word font type and then copy & paste to the smatermail message, after click save the issues are occurs. After i changing the font type to smatermail supportted font type, they are working properly, would like to ask yours why the issues will occurs. It is cause by user using without Smatermail Supported font type?