When it comes to conveying the idea of giving proper thought or attention to something, "with due consideration" is a common phrase. However, there are plenty of synonyms that can also be used to express a similar sentiment. Some options might include "thoughtfully," "mindfully," "deliberately," "carefully," or "prudently." Depending on the context in which the phrase is being used, other options could include "in light of," "taking into account," "weighing," "judiciously," or "circumspectly." Ultimately, the key is to use language that accurately conveys the intended meaning while also being appropriate for the situation. Whether it's a professional email or a personal conversation, selecting the right words can make all the difference.