CTOCTO is the acronym for Chief Technology Officer.
Chief technology officer, chief technical officer, or chief technologist, is an executive-level position in a company whose occupation is focused on the management, implementation, and vision of technology use within an organization. This responsibility is sometimes referred to as the CIO.
CTOCTO is the acronym for Click To Open.
Click-to-open rate is the number of clicks out of the number of emails opened rather than the number of delivered emails. This metric provides feedback on how the design and messaging resonated with your audience since these clicks are only from people that actually viewed your email. Another abbreviation is CTOR.