NightLife Texting does not offer this feature for standard messages because if you use other domains, incoming messages will not be correctly routed back to your inbox. All of our domains are white-listed and trusted.
You can change the 'From' information that appears on your messages by editing the username in your profile. For more information, click here.
For example, if you send a standard message and your username is 'txtmsguser', your 'From' information would appear as "From: firstname.lastname@example.org.' If you send an express delivery message, your 'From' information would appear as 'From: txtmsguser.