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Simple Mail Gui's for the REST API on Office365 and Exchange 2016

As I've been adding new cmdlets to my Exch-REST PowerShell module I've been knocking up against some of the limitations and frustrations of working within a console environment. One of them is if say I find some Messages within a Mailbox which needs further investigation for whatever reason, It good to have an easy way of opening up that message to take a look at the content that isn't normally easy to view in the cmdline like the html body of a message and maybe I want to download any attachments or MessageHeaders without needing to open Outlook or OWA. A number of years ago I created a simple EWS mail client that just acted as a simple Email client using EWS so I decided to port this to the REST API and include it in the Exch-Rest Module. I also broke out two of the winforms from this simple client to enable just reading a particular Message you may have found using any of the other cmldets as well as a simple Form to Send a New Message with or without an Attachment.

So with Version 2.7 of the Exch-REST Module you can now use the

Start-EXRMailClient cmdlet which will start the small mail client which will use the underlying Exch-REST Module cmldets to open and browse Mailbox Mail folders, Read Items from a Folder you select in the TreeView, Show Internet Message Headers or Download attachments from messages in the datagrid eg


Getting Messages from the Inbox


Showing the content of a Message


or show the Message Headers



You can either start the Mailbox client using Start-EXRMailClient cmdlet with no parameters or pass in a Mailbox and AccessToken you maybe working with and it will automatically enumerate the Folders from that Mailbox using the token passed in.

To use the Read Message Form on a message you have found in the cmdline through using another cmdlet eg to open the last message in the Inbox you could use


$Items = Get-WellKnownFolderItems -MailboxName gscales@datarumble.com -AccessToken $AccessToken -WellKnownFolder Inbox -TopOnly:$true -Top 1

Invoke-EXRReadEmail -ItemRESTURI $Items[0].ItemRESTURI -AccessToken $AccessToken -MailboxName gscales@datarumble.com
To Start the New Message form just use

Invoke-EXRNewMessagesForm -MailboxName gscales@datarumble.com -AccessToken $AccessToken
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