How to add an "Add to calendar" link to the thank you email

Try below anchor tag in html view of your email:

<a href="data:text/calendar;charset=utf8,BEGIN:VCALENDAR
VERSION:2.0
PRODID:Zoom Meeting
BEGIN:VEVENT
SUMMARY:Team Meeting
DESCRIPTION:Join our weekly team meeting on Zoom. Zoom link: https://zoom.us/j/MEETING_ID
LOCATION:Online
DTSTART:20240126T140000Z
DTEND:20240126T150000Z
URL:https://zoom.us/j/MEETING_ID
STATUS:CONFIRMED
SEQUENCE:0
BEGIN:VALARM
TRIGGER:-PT15M
DESCRIPTION:Reminder
ACTION:DISPLAY
END:VALARM
END:VEVENT
END:VCALENDAR" download="zoom-meeting.ics">Add to Calendar</a>

Thanks @Shashi how do I add the option for different calendars? This one seems to be for Icalendar only