Calendar invites do not allow resend of accept/deny when initial attempt fails.

[paradisaeidae]

Often the config is the issue. Being that the first 'known' account with email received addy is used to attempt smtp. There are a number of reasons the smtp attempt may fail. Though the invitation is not aware of this being so. No way of re-setting invite to 'unread'. That I could find. Firefox, Mozilla, Thunderbird is/are amazing. Thanks! MarkT