Q:

Custom From Name

I am trying to configure a custom from name and have adding new sender profiles. When I try to select it from the dropdown menu in send preview, it doesnt come up.
Will appreciate help with this.

A:

You need to create a sender profile + a Send Classification using the custom Sender Profile and a delivery profile.

Sometimes, if you have the right permissions, you can override the various profiles despite the send classification.

If you are looking for a dynamic custom form name, you would need to use ampscript and ideally have the field in which the from name are present, in the data extension you are sending to.

