According to the Gmail team, Google Mail should automatically detect ICS attachments.
But it doesn't. At least not for the ICS I got from an iPhone user:
How can I make sure these are parsed as ICS attachments by Gmail?
The attachment seems correctly formatted:
--Apple-Mail-FBEB8378-1D70-46DA-B281-02503CEA5C67 Content-Type: text/calendar; name="Biertje drinken met jeroen.ics" Content-Disposition: attachment; filename="Biertje drinken met jeroen.ics" Content-Transfer-Encoding: quoted-printable BEGIN:VCALENDAR=0D=0ACALSCALE:GREGORIAN=0D=0AVERSION:2.0=0D=0AMETHOD:PUBLISH=