Email Security Gateway

Hello, we are a shipping agency company, and we are currently needing to implement an email security service to protect our email accounts from spam, malware, phishing, rasomware, and threats in general. I have been looking at some choices being one of the most striking for me Barracuda Email Security or Symantec Email Gateway. The truth is I'm looking for an expert in the area who can do the work for me since I do not have enough time to implement it. I need advice with this topic and a full quote of the cost of the implementation and which is the tool that best suits our needs. One very important thing is that this tool or platform must be managed by me and not by a third party so that any client's request or special configuration can be made through the platform's control panel. Additionally, I would need a brief training to be able to carry out the administration of the platform and make changes if necessary. If you need more details for the realization of the budget or proposal let me know.