How does the reply to sender work on EmailSMS?
Mobile phone users who receive EmailSMS messages can reply to them by using the return mobile phone number that the message originated from, for a period of up to 7 days. After the 7 day period, any messages sent by recipients to the sender will not be received as the return mobile phone number will be reallocated for use by another EmailSMS user. Each time that an EmailSMS message is sent to a mobile handset, another return path mobile phone number is established, and will also last for a period of 7 days.
