Board Thread:General Discussion/@comment-67.85.96.134-20170809132555/@comment-198.24.197.186-20170809174138

Depends on the type of gift. You can give 1 free gift and up to 10 of the found/collection items you have in inventory. When your friend accepts your gifts, you receive a thank you gift. If one of my friends doesn't go in to receive their gifts for several days (since I try to send a gift everyday), then I get a ton of gifts all at the same time. This is a good way to see how often your friend plays the game.