A compilation (done with permission) of the following group: The Mailbox

The Mane Six have left Ponyville for the summer, each traveling to a different part of Equestria for different reasons. But a few months and a little distance can't stop their friendship!
This book collects the letters they send back and forth, telling each other about the new places they go and new ponies they meet, comforting each other when they get lonely or homesick, and keeping the spirit of friendship alive.

Rated Teen Sex for alcohol references and some innuendo.

Be sure to check out the Cast, Crew, and Extras chapter for links and titles of the side stories!

Strange discoveries. Mysterious twitching. The curious feeling of being watched. And a sudden urge to sing. Something's happening to Applejack, and no matter how often she laughs, this is no laughing matter!

After an incident between Applejack and Rainbow Dash, the two are finding it hard to communicate with each other. However, when a friend suggests a pilgrimage to help Applejack settle her feelings over memories of the past, Rainbow Dash and Applejack find that they may have to redefine their friendship.

Rarity is not feeling like herself. Her experiences with sadness were usually intense and loud, but brief. Not this time. After a chance encounter with a customer, powerful melancholy grips her, unlike anything she has experienced before. She feels empty, hopeless, and miserable.

Then Twilight Sparkle visits.

There are some mentions of suicidal ideations, but no actual suicide or self-harm.

A HUGE thanks to Troublesome Beast for helping me with this one.
Cover art by Sarochan.

Mood Wings - Observations on Pegasus Body Language.

When Twilight Sparkle finds this book, she discovers an entirely new field of research. The secrets of pegasus wings lie before her, and she insists on making her own observations on the matter.

How?

Field research, of course.

A storm rages through Ponyville and Twilight is the only one awake to enjoy it. Sure, other ponies may not like storms, but whenever one comes around, Twilight is there to enjoy the peace of rain falling.

NOTES
- Despite the cover, Twilight is actually happy.
- Cover picture by MissPolycysticOvary

Scootaloo has been questioning their gender identity for months after a number of revealing incidents leave them confused and frustrated. After an enlightening conversation with Rainbow Dash, they finally understand who they are: Non-binary!

Late on Nightmare Night, after the rest of Ponyville has gone to bed, Pinkie Pie descends into the dark and silent basement of Carousel Boutique. She’s determined to make things better with Rarity after a friendship-splintering fight, but there might not be a solution for the troubles she finds once inside the house. Didn’t anypony tell her it’s not safe to venture out alone at night?

For Sweetie Belle, having a babysitter is not that big a problem, especially when her babysitter is the element of magic herself. When Twilight devises a spell to help her with her apparent problems, however, both of them will have to learn a lesson that won't soon be forgotten.

Now has a sequel called Sizable Differences

Enjoy.

After a long day of flight practice with Scootaloo, Rainbow Dash discovers the filly knows next to nothing about preening and takes it upon herself to teach her.

Warning: May Contain Feels and/or D'aww moments.

Featured on FIMFiction on 7/20/2013. Yay!
Featured on EQDaily on 09/12/2013 Double Yay!
Reading by TheLostNarrator (excellent!): Here
Reading by DRWolf: Here
Reading by Joehighlord: Here
Riffed by Draklox: Here
Korean Translation: Here
Spanish Translation: Here
French Translation: Here
Chinese Translation: Here