No. An e-ticket is a paperless ticket. When you travel with an e-ticket you can proceed straight to check-in and present your booking receipt/itinerary as identification. If you have arranged for a ticket on departure (TOD) this has to be collected at a ticket desk before you are able to check-in.
For other enquiries contact your local offices, contact details can be found in the following link https://www.qatarairways.com/en/worldwide-offices.html