i think this should be discussed very carefully…
Difficult, many option. Grinpack would be obvious, or should it be Harry Potter lore bound, some options:
Grinpack
OwlPack
OwlPost
OwlMail
OwlLetter
OwlExpress
aparecium (Revealing_Charm)
protego (for armored slate packs)
protegopack (for armored slate packs)
pegasusPack (in Harry Potter lore pegasus is not used, they say winged horse, but pegasus sounds better)
pegasusMail
For more inspiration look at Harry Potter spells https://harrypotter.fandom.com/wiki/List_of_spells#A
Nice to discus the start and stop label for the Grin slatepack here. Just so everyone is aware, the actual discussion appears to take place on grincoin keybase #general.
Most likely the labels will be either:
GRINSTART/GRINSTOP
BEGINSLATE/ENDSLATE
Both ok for me. Although not Harry Potter linked, it might be more important to be simple and understandable for everyone.
What about…
MIMBLE/WIMBLE
PackGrid, Slategrin or maybe slatepack
Obviously, I vote HedwigMail.
Although I love the Hedwig part (I really dig the Harry Potter fandom in Grin, most people do not), the name suggest you can only sent a slatepack via mail, which is of course not the case.
So a slatepack is more like the letter that an owl would deliver.
The messaging network itself might be called Hedwig