Can you search subscriber lists custom fields? I need to segment signups on a specific custom field entry
Apologies for the delayed reply here, but what do you mean by "searching" the custom fields, and how does that relate to your need to segment your signups.
Segments are built into Campaign Monitor, and can be easily created for grouping subscribers according to their custom field values.
There is no other way to specifically search your subscribers based on a custom field value (apart from opening up your list in a spreadsheet and performing the search there).
I hope our segment feature fills your need, and if not, please let us know what you are looking for.