Thank you for contacting us.
Sitefinity's default mailing lists have titles when they are created. You can read more about creating mailing lists here
You can create your own widget and place it on a backend page, if you want to have some other custom functionality available only for your backend users. You can find out more about adding subscribers to mailing list here
, creating custom ASP NET Web Forms widgets here
, Feather (MVC) widgets here
and about creating custom backend pages here
Do not hesitate to contact us in case you have any further questions or concerns!
Do you want to have your say in the Sitefinity development roadmap? Do you want to know when a feature you requested is added or when a bug fixed? Explore the Telerik Sitefinity CMS Ideas&Feedback Portal
and vote to affect the priority of the items