How many deaconess in the Bible?

The Bible explicitly mentions one deaconess by name: Phoebe, who is referred to as a deacon (or servant) of the church in Cenchreae in Romans 16:1. While there may be other women who served in similar roles, Phoebe is the only one specifically designated as a deaconess in the text. The concept of deaconesses in the early church is generally inferred from descriptions of women's roles rather than explicitly detailed in Scripture.