Change access request email

Question

Hello, 
By default the change access request email is set to [email protected]
We want to change that to our own email, for obvious reasons. So we use this piece of powershell:
$webapp = Get-SPWebApplication "http://sharepointtest"
$currentEmail = "[email protected]";
$newEmail = "[email protected]";
foreach($site in $webapp.Sites)
foreach($web in $site.AllWebs)
$url = $web.url
Write-host $url
if (!$web.HasUniquePerm)
Write-Host "Access Request Settings is inherted from parent."
elseif($web.RequestAccessEnabled)
Write-Host "Access Request Settings is enabled."
write-host $web.RequestAccessEmail
if ($web.RequestAccessEmail -eq $currentEmail)
Write-Host "Email needs to be updated."
$web.RequestAccessEmail = $newEmail
$web.Update()
Write-Host "Email changed successfully!"
else
Write-Host "Access Request Settings not enabled."
However in order for this to work... under our web application, SharePoint - 80 under user permissions we have to have "Manage Permissions" (under site permissions) checked. However in our environment we DO NOT want that checked! Without this step
power shell errors with access denied.
Unless there is an easier way of doing this what I would like to do is automate the checking of that box to go before my script and the unchecking of that box after the above script runs. However I do not possess the knowledge to do that. 
Requesting help, if someone knows the code? OR an alternative easier way of changing the default email. 

Answer 1

Hello Yes I did get it working. 
However a small issue occurs. Once you run this and have someone access site, they should get the page that has them type in why they want access to the site. 
The first time someone goes to the link to do this, there is a 403 Forbidden error, once you submitted the details describing why you need access. IF you refresh you will then see the access request page again BUT it will show what you previously typed.
HOWEVER, that doesn't get sent out in an email, you must insert another block of text into the access request field then click submit, which then sends out an email.
Hope that makes sense, and if anyone knows why it does that?
Here is the code:
Add-PSSnapin -name "Microsoft.SharePoint.PowerShell"
$webApp = Get-SPWebApplication -Identity http://sharepointtest/
#if enable: $true;
#if disable: $false;
$allowManagePermissions = $true
$newPermissions=$null
if ($allowManagePermissions)
$newPermissions=[Microsoft.SharePoint.SPBasePermissions]($webApp.RightsMask -bor [Microsoft.SharePoint.SPBasePermissions]::ManagePermissions)
else
$newPermissions=[Microsoft.SharePoint.SPBasePermissions]($webApp.RightsMask -band [System.Int64](-bnot ([System.Int64][Microsoft.SharePoint.SPBasePermissions]::EmptyMask -bor [System.Int64][Microsoft.SharePoint.SPBasePermissions]::ManagePermissions)))
$webApp.RightsMask = $newPermissions
$webApp.Update()
Start-Sleep -s 05
$webapp = Get-SPWebApplication "http://sharepointtest"
$currentEmail = "[email protected]";
$newEmail = "The email you want to change to";
foreach($site in $webapp.Sites)
foreach($web in $site.AllWebs)
$url = $web.url
Write-host $url
if (!$web.HasUniquePerm)
Write-Host "Access Request Settings is inherted from parent."
elseif($web.RequestAccessEnabled)
Write-Host "Access Request Settings is enabled."
write-host $web.RequestAccessEmail
if ($web.RequestAccessEmail -eq $currentEmail)
Write-Host "Email needs to be updated."
$web.RequestAccessEmail = $newEmail
$web.Update()
Write-Host "Email changed successfully!"
else
Write-Host "Access Request Settings not enabled."
Start-Sleep -s 05
$webApp = Get-SPWebApplication -Identity http://sharepointtest/
#if enable: $true;
#if disable: $false;
$allowManagePermissions = $false
$newPermissions=$null
if ($allowManagePermissions)
$newPermissions=[Microsoft.SharePoint.SPBasePermissions]($webApp.RightsMask -bor [Microsoft.SharePoint.SPBasePermissions]::ManagePermissions)
else
$newPermissions=[Microsoft.SharePoint.SPBasePermissions]($webApp.RightsMask -band [System.Int64](-bnot ([System.Int64][Microsoft.SharePoint.SPBasePermissions]::EmptyMask -bor [System.Int64][Microsoft.SharePoint.SPBasePermissions]::ManagePermissions)))
$webApp.RightsMask = $newPermissions
$webApp.Update()