Later, fix with real HTML output or skip multipart for text-only mails.
private Output createErrorOutput(Reaction reaction, State state) {
DefaultOutput output = new DefaultOutput(String.format("Error while processing “%s!”", reaction.name()));
output.addText("text/plain; charset=utf-8", createErrorEmailText(reaction, state));
private Output createErrorOutput(Reaction reaction, State state) {
DefaultOutput output = new DefaultOutput(String.format("Error while processing “%s!”", reaction.name()));
output.addText("text/plain; charset=utf-8", createErrorEmailText(reaction, state));
+ output.addText("text/html; charset=utf-8", createErrorEmailText(reaction, state));