At the end of Surrounded Sea, Sunflora will tell you about this at the guild after you rescue Scizor.
There is a site posted on Google for Wonder Mail S Generators of Explorers Of Sky.
You get them as rewards for missions sometimes
tell me
pickle
wonder mail s
Sky Stairway is A Pokemon explorers of time/darkness dungeon
Go to Youtube.com and type Pokemon Exlores Of the sky wonder mail and there are at least12 golden seed wonder mail to lv. up
I'm not particularly sure but i think its wonder mail. The wonder mail should be on the official Pokemon website pokemon.com
You need to get a Wonder-mail code. To get it visit the PMD explorers of Sky website. That's where I got it from.
mission recruit or egg
there is not a wonder mail code there are no Pokemon regular that are level 100
Only in Explorers of Time you can be Eevee. I thought you (Hero or Partner) can be Eevee in Explorers of Sky.