I haven’t got my very own iPhone, so I’ve to depend on my QA tester, however they report that after they ship an e mail with ICS attachment to their iPhone, “Preview is not accessible and no choice to open or obtain”.
This is the physique of the ICS:
BEGIN:VCALENDAR
METHOD:PUBLISH
PRODID:-//github.com/rianjs/ical.internet//NONSGML ical.internet 4.0//EN
VERSION:2.0
BEGIN:VEVENT
DTEND:20240309T150000Z
DTSTAMP:20240308T190720Z
DTSTART:20240309T160000Z
LOCATION:https://portal11.instance.com/MiscProgramNameGoesHere
SEQUENCE:1
SUMMARY:MiscProgramNameGoesHere
UID:152339
URL:https://portal11.instance.com/MiscProgramNameGoesHere
X-ALT-DESC;FMTTYPE=textual content/html:nThank you for registering for this system:
MiscProgramNameGoesHere. <br/>nThe presentation particulars are listed under: <
br/>nDate: 3/9/2024 <br/>nTime: 10:00 AM ET <br/>nDay of Program Login
: https://portal11.instance.com/MiscProgramNameGoesHere <br/>n<br/>nPrior to a
ttending please check your connection at https://assist.instance.com <br/>n<
br/>nIf you want Technical Help please e mail [email protected] <b
r/>n<br/>n
END:VEVENT
END:VCALENDAR
the e-mail is being despatched by way of SendGrid.