Email send-failed with error string Illegal semicolon, not in group DescriptionActivity stream is not coming & even email sent logs are not appearing in activity stream. Email logs show sent failed with the message "Illegal semicolon, not in group"CauseUse of semicolons in the system property glide.email.test.user is not permitted. As our code uses JavaMail (javax.mail) internally this library specifies in its API documentation that you should always use commas to separate addresses. For more information about RFC822, these external websites explain it more in depth: http://www.courier-mta.org/maildrop/rfc822.html https://www.w3.org/Protocols/rfc822ResolutionJust remove the semicolon separator from the following property: glide.email.test_user property and use comma instead For additional information, visit our official documentation page about Outbound mail configuration