Works great with Extensible Follower Framework (EFF) .
When she’s off the clock, you can usually find her hanging out in Belethor’s General Goods in Whiterun. A Few Tips for Your Load Order: Lily - Skyrim Messenger and Follower
Do NOT set her home residence via other follower mods. If you do, she might get stuck there and you won't get your mail!. Works great with Extensible Follower Framework (EFF)
Whether you just want a more interesting delivery person or a new companion for your travels, Lilly is a must-have for a more immersive Skyrim. Skyrim Legendary Edition (Nexus) Skyrim Special Edition (Nexus) Xbox One (Bethesda.net) Lily - Skyrim Messenger and Follower
When she isn't busy sprinting across the tundra to give you a letter from a "Friend," you can actually recruit her to join your party.