What method is typically used for sending postage-paid order envelopes?

The method of sending postage-paid order envelopes is typically conducted through mail or phone. This approach allows businesses to provide customers with a convenient and effective way to return orders or send in payments using a physical envelope that is already covered for postage.

Using mail is particularly beneficial because it enables the handling of tangible items, such as checks or printed forms, and allows for tracking through postal services. Additionally, offering phone support can facilitate immediate assistance or correct any issues that may arise during the order process, enhancing customer satisfaction by providing a personal touch.

Other options like online forms and text messaging are more suited for digital transactions or services and won't apply to the physical nature of postage-paid envelopes. In-store purchases typically don't pertain to sending envelopes but rather focus on in-person transactions. Thus, the combination of mail and phone stands out as the most appropriate method for this context.