providers you might want to explore:

[mstaklimakhatunbd66@]

Directly provide prepared email lists due to privacy concerns. However, several companies specialize in compiling and selling business contact lists, and you can likely find lists that include Controllers and Finance Directors.

Based on my search, here are some

BookYourData: They offer a "Finance Directors and vp administration email lists Managers Email List" which would likely include Controllers.
InfoGlobalData: They have a "Financial Managers Email List" which can be segmented by job title.
Cognism: They are a B2B sales intelligence platform that helps find accurate emails for finance professionals.
ZoomInfo: A comprehensive B2B database where you can search for and build lists of Controllers and Finance Directors.
Lusha: This tool helps find contact information, often through a browser extension.
Apollo.io: A sales intelligence platform with a database to find and connect with finance leaders.
TargetNXT: They offer a "Finance Email List" with options for customization.