Any hints on how I can process datetimes with non-standard formatting properly? I've got mails where the date is formatted as dd/mm/yyyy, which causes Google Calendar to create an event on the 3rd of January instead of the 1st of March.
If you can, try setting each portion of the date as a different field for the parser to split out. Then in a zap you could re-assemble the date in the right order so GCal can understand it.