Does a woman have a field for Islamic outreach outside her home, and if so, how?

A woman has a scope for dawah (inviting others to Islam) within her home to her family, and outside her home to other women, with conditions: that it does not involve travel without a mahram (unmarriageable kin) or where fitna (temptation/discord) is feared, with her husband's permission if she is married, and that it does not lead to neglecting the rights of her family.