Issue still relevant with Thunderbird 52.2.1 on Xubuntu 16.04. Even in safe mode without Add-Ons.
An error occurred executing the cmd_sendButton command: [Exception... "Component returned failure code: 0x80004001 (NS_ERROR_NOT_IMPLEMENTED) [nsIMsgCompose.expandMailingLists]" nsresult: "0x80004001 (NS_ERROR_NOT_IMPLEMENTED)" location: "JS frame :: chrome://messenger/content/messengercompose/MsgComposeCommands.js :: expandRecipients :: line 4456" data: no] Using Webmail until fixed. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1691479 Title: can't send message To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/1691479/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs