MFCMAPI

MFCMAPI is an utility that provides access to MAPI stores to facilitate investigation of Exchange and Outlook problems.

https://github.com/microsoft/mfcmapi

https://office365itpros.com/2023/10/27/mfcmapi-utility-primer/

ExchangeRecipientAdmin

This is an utility to manage Exchange Online Attributes stored in your local AD without Exchange Server.

https://github.com/spgoodman/ExchangeRecipientAdmin

http://practical365.com/a-new-tool-to-manage-exchange-related-attributes-without-exchange-server/

Exchange Health PowerShell script

A PowerShell script is available that will check the health of a local Exchange service.

https://github.com/dpaulson45/HealthChecker

https://aka.ms/ExchangeHealthChecker

ExQuilla

ExQuilla is an addon for Mozilla's Thunderbird email client that allows access to both messages and contacts stored on an Exchange Server. ExQuilla uses EWS (Exchange Web Services) for access to the server.  Previous versions required a licensing fee, but is free starting with version 60.

https://addons.thunderbird.net/en-US/thunderbird/addon/exquilla-exchange-web-services/

https://github.com/rkent/exquilla/wiki

To use the extension, launch Thunderbird and do not configure an account within the initial wizard.  Use the Add-Ons and search for ExQuilla.  Add the extension to Thunderbird.

After the Thunderbird re-launch, cancel the inital wizard again and click on the ExQuilla icon.

Enter the email address and password of the Exchange account.

Enter the URL for the remote server.

Exchange Analyzer

Exchange Analyzer is a PowerShell tool that scans an Exchange Server 2013 or 2016 and reports on compliance with best practices.

https://gallery.technet.microsoft.com/office/Exchange-Analyzer-6e20132e

https://exchangeanalyzer.com/

MailSniper

MailSniper is a penetration testing tool, written in PowerShell, to allow for mass searching through email across every mailbox of an organization’s Microsoft Exchange environment.

https://github.com/dafthack/MailSniper

http://www.blackhillsinfosec.com/?p=5296

Mailbox Recovery Troubleshooter

Microsoft has an Exchange Online mailbox recovery troubleshooter available at the link below.

https://support.microsoft.com/en-us/help/20804/mailbox-recovery-in-exchange-online

Exmon

The Microsoft Exchange Server User Monitor (ExMon) tool enables administrators to
view and evaluate individual users' usage and experience with Microsoft Exchange
Server. With this tool, administrators can gather real-time data that helps them better
understand current client usage patterns and plan for future use.

Using ExMon, administrators can view the following:
  Show the RPC data based on the user
  Show the RPC data based on the RPC Operation
  Show the RPC data based on the specific application
  Show the RPC data based on the Admin Client Type
  Show the RPC data in the Raw form
  Show the RPC data in the Admin Raw form
  Show the RPC data in the Task by client Type
  Show the RPC data in the Task raw

Within each view, the user can drill down to get additional information on:
  Microsoft Office Outlook® versions and mode
  Client monitoring data
  Resource use, such as:
  CPU usage
  Server-side processor latency
  Network bytes
  RPC Operations, components and Action

https://www.microsoft.com/en-us/download/details.aspx?id=51101

RBAC Manager R2 for Exchange 2010/2013

RBAC Manager is a tool to simplify RBAC administration. Basically it provides the missing GUI to edit RBAC settings on Exchange 2010 systems; including adding/removing cmdlets, cmdlet properties, assignments etc.

http://rbac.codeplex.com/

ExPerfWiz

ExPerfWiz is a PowerShell-based script to help automate the collection of performance data on Exchange 2007/2010/2013 servers. The latest version collects all counters for Exchange baselining and troubleshooting, although options are available to collect just certain parameters.

http://experfwiz.codeplex.com/

PelNet Script

The PelNet script is a PowerShell script to perform troubleshooting concerning mail flow.  It is intended to be executed on a machine that has the Exchange management tools installed, and against Exchange transport servers.

http://gallery.technet.microsoft.com/scriptcenter/PelNetps1-1cb7b6d7