Does the wife get divorced if the husband replies to messages from both sexes at his work, after he swore to her that she should consider herself divorced if she speaks with others?

A husband's statement to his wife, "Consider yourself divorced," is an implicit declaration [kinayah] by which divorce does not occur unless intended. If he did not intend to condition the divorce on her speaking to women, then it does not occur. If he did intend that, then the purpose is to prevent her from speaking to women with suspicion or temptation, not to prevent her from speaking to them absolutely. Speaking with non-mahram (definition) women is permissible when there is a need, and disliked when there is no need or when there is suspicion. Blameworthy jealousy is an transgression that leads to corruption and hardship.