Organization Rebrand - Marketing Support

We are currently undergoing a full organizational rebrand, including redesigning our website, logo, and messaging. We are looking for guidance on how to effectively build a marketing strategy to support this next phase.

As a small, mission-driven nonprofit focused countering crimes that affect the environment (e.g. wildlife trafficking, illegal logging, illegal mining, etc.), we have not historically had a formal marketing function. We post on LinkedIn, Facebook, and Instagram. We do not do any sort of email newsletters. Almost all of our funding has come from grants from the government, rather than from the general public interest. Now that we are doing this rebrand, we want to understand how we can best market our organization to expand its reach, credibility, and engagement across various audiences.