[Company letterhead (for business or corporate invitation]
_____________________ [name of recipient or company]
_____________________ [Designation (for individual)]
Sub: Invitation for _______________ [mention event]
Dear _____________________ [name of person or company representative],
This letter is an invitation to our office event ________________ [mention name of event] to be held on _______________ [dd/mm/yy], at ______________ [specify venue]. We request your kind presence at the event to make it a roaring success. The event has been organized by ________________ [mention the name of the company] and sponsored by _____________ [mention name of sponsor. You are invited to come and be with us on this momentous occasion at ______________ [time].
Valet and car parking facilities will be available at the venue, and therefore, you need not have any worries on those counts. We hope you will arrive on time and grace us with your presence. The event is expected to last about ______________ hours [mention time]. In case of any doubts please feel free to contact us without hesitation. This letter must be brought along to the event to serve the purpose of an invitation card.
______________________ [Official signature]
Please do call at: ________________________