Probably involved in the diffusion of protonated ethanolamine (EA) into the cell at low pH. At low pH most EA is protonated, and this permease becomes necessary (By similarity). Contributes to bacterial survival and replication in acidic macrophage vacuoles, but not to bacterial uptake by macrophages (PubMed:29531136). Decrease in mouse macrophage survival 2-5 hours after infection. Belongs to the EutH family.