The iMessage app on PC also lets you connect to businesses that have a dedicated Apple Business Chat account and support team. You can take your pick from the Memoji Sticker Effects options once you click on the App Store icon in the messaging app. For instance, you can spruce up photos, send floating bubbles, make your avatar fill up the screen, or have a handwritten message displayed. The iMessage app can enhance expressions beyond memes and emojis through its Memoji Sticker Effects.