What’s written from the letters:  

This is really Luna’s plan to do the ultimate prank on her sister!

Pegasus Egress Transport?

She has the Moon!

Pet recycling?

Oh buy what inside this box

Sure hope Luna resisted the urge to pop all her bubble wrap.

@ILoveMyoozik  
Three counter-clockwise bellyrubs. If you try to give her clockwise bellyrubs, the Ponyville Postal Service is not liable for any injuries that may follow.
 
@Background Pony #B84B  
If you think an image should have a certain tag that it’s not already tagged with, then add it yourself.

@TheKman100  
It’s a meme as old as the internet.

Whoever came up with the “when you see it” tag is a genius.

Guess so but anyways so cute!

@Raritybro  
So am I now that you mentioned it.

Daaaaw

@Ninjanaut1000  
It’s in your account settings

Derpabetes tag needed

Ah yes, my Royal Sister has arrived! How much was shipping and handling again?

Honestly impressed she didn’t set it upside down

@TheMagpulPone  
got a question for you, how’d you set a custom quote type thing “Should’ve had a V8”. always been curious about how it was done but never really bothered to ask till now.
 
Edit: nevermind, figured it out.

This can only end in joy and snuggles.

Fra-gee-lay…it must be Italian.

The two people that downvoted this must have used UPS.