When someone transfers a ticket to you via SeatGeek, an e-mail notification will let you know you have a pending transfer in your account.
If you already have a SeatGeek account, just log in to the SeatGeek mobile app and accept the transfer in Tickets.
If you do not have a SeatGeek account, you will be prompted to create one, using the same e-mail the tickets were transferred to, in order to complete the transfer and access your tickets.
This article only refers to tickets which are housed within SeatGeek. Some of the tickets sold on SeatGeek's marketplace are housed by other platforms. Read more about those types of tickets here!
Want a visual? Check out these videos: