Your search for "Infected Mail GENF-EN051" revealed the following:
Infected Mail - GENF-EN051 - Super Rare - Unlimited from Generation Force Unlimited, available at 401 Games Canada. Rarity: Super Rare Card Text:Once per turn: You can target 1 face-up Level 4 or lower monster you control, that target can...
Infected Mail - GENF-EN051 - Super Rare - 1st Edition from Generation Force 1st Edition, available at 401 Games Canada. Rarity: Super Rare Card Text:Once per turn: You can target 1 face-up Level 4 or lower monster you control, that...