Undyne's Letter

Undyne's Letter is a letter from Undyne, given to the protagonist, to deliver to Dr. Alphys. Delivering the letter advances the True Pacifist Route. It allows access to the True Lab Undyne Letter EX is given as a replacement if the original one is thrown away. It is identical in function, except it can't be thrown away. Trying to drop it results in it being 'too powerful' to drop.

Flavor Text

 * You tried to open the letter, but... | It's been shut so tightly, you'd need a chainsaw in order to open it. [Use]
 * OH MY GOD!! I'M GONNA FREAKIN' KILL YOU!! [Use in Snowdin]
 * Maybe if you check the lab door, you can slide it underneath... [Use in Laboratory Entrance]
 * Despite what seems like common sense, you threw away the letter. [Drop Undyne's Letter]
 * Hey! Don't throw that away! Just deliver it! [Drop Undyne's Letter in Snowdin]
 * Oh my god! The letter's not to PAPYRUS!!! | YEAH, UNDYNE'S GOT A POINT! | WHY DIDN'T SHE WRITE A LETTER TO ME INSTEAD? | Fine, you want a letter!? | I'll give you a letter!!! | YOU GET AN "F"! | OH NO!!! | WHAT'S THE F FOR? | Friendship!!! [Examine Papyrus's mailbox with letter in inventory]
 * The letter is too powerful to throw away. It gets the better of you. [Drop Undyne Letter EX]

Main Story
If Flowey was spared after his boss battle in a Neutral Run, he will talk to the protagonist, telling them to go back and see Alphys (Depending on whether they befriended Papyrus and Undyne). Upon exiting New Home, the protagonist will get a phone call from Undyne on the bridge that connects the CORE and MTT Resort. Undyne will then tell the protagonist to go to Snowdin to meet her and Papyrus. At Snowdin, Undyne gives the letter to the protagonist.

This will be different if Papyrus and Undyne haven't been befriended. If Papyrus and Undyne haven't been befriended, Flowey will tell the protagonist to go to Papyrus's or Undyne's house instead. In this case, after hanging out with Undyne, she will give the protagonist the letter. Both of these are only possible if the protagonist has not killed anyone, and otherwise the game must be reset in order to receive the letter.

When delivered to Dr. Alphys, she debates whether or not to read it before chastising herself, and opening it with some sort of loud machine (possibly a chainsaw). At first she believe the contents to be a joke being played on her, and decides to confront the person who delivered it.

After discovering the protagonist on the other side of the door, Alphys becomes flustered, as she mistakenly believes the author of the letter is the protagonist. They then proceed to go on a date.

Письмо Андайн Undynes_Brief