Script repository

Send email notification with inline image

Updated on: Jan 18, 2026, Views: 8331

The script sends an email notification containing an inline image. To execute the script, create a business rule, custom command or scheduled task configured for the required object type.

Parameters

$to - the email address of the notification recipient.
$subject - the email notification subject.
$imagePath - the path to the image that will be embedded into the email notification.
$messageTemplate - Specifies the email notification template. The template must be in the HTML format. In the template, the {0} placeholder will be replaced with the image specified by $imagePath.

Adaxes 2023.2 and older

$to = "%mail%" # TODO: modify me
$subject = "Your Account Information" # TODO: modify me
$imagePath = "\\Server\Share\Resources\%company%Logo.png" # TODO: modify me
$messageTemplate = @"
<html><body style='font-family:Calibri, sans-serif; font-size: 14px'>
<p>Hello %name%,</p>
<p>Your username is %sAMAccountName%, your initial password is %unicodePwd%.</p>
<p>Best regards,</p>
<hr />
<p>Acme Support Team</p>
<p><img src='data:image/png;base64,{0}'></p>
</body></html>
"@ # TODO: modify me

# Convert image to Base64 string.
$imageBase64String = [Convert]::ToBase64String((Get-Content $imagePath -Encoding Byte))

# Build mail message.
$html = [System.String]::Format($messageTemplate, $imageBase64String)

# Send mail
$Context.SendMail($to, $subject, $NULL, $html)

Adaxes 2025.1 and newer

$to = "%mail%" # TODO: modify me
$subject = "Your Account Information" # TODO: modify me
$imagePath = "\\Server\Share\Resources\%company%Logo.png" # TODO: modify me
$messageTemplate = @"
<html><body style='font-family:Calibri, sans-serif; font-size: 14px'>
<p>Hello %name%,</p>
<p>Your username is %sAMAccountName%, your initial password is %unicodePwd%.</p>
<p>Best regards,</p>
<hr />
<p>Acme Support Team</p>
<p><img src='data:image/png;base64,{0}'></p>
</body></html>
"@ # TODO: modify me

# Convert image to Base64 string.
$imageBase64String = [Convert]::ToBase64String([System.IO.File]::ReadAllBytes($imagePath))

# Build mail message.
$html = [System.String]::Format($messageTemplate, $imageBase64String)

# Send mail
$Context.SendMail($to, $subject, $NULL, $html)

Comments 2

You must be signed in to comment.

Shawn

Apr 14, 2026

I was receiving the following error.

Cannot process argument transformation on parameter 'Encoding'. 'Byte' is not a supported encoding name. For information on defining a custom encoding, see the documentation for the Encoding.RegisterProvider method. (Parameter 'name') Stack trace: at , : line 14

So I updated this.

$imageBase64String = [Convert]::ToBase64String((Get-Content $imagePath -Encoding Byte))

With this.

$imageBase64String = [Convert]::ToBase64String([System.IO.File]::ReadAllBytes($imagePath))

I was then able to send the email. It may be because we're on Adaxes 2026.1, which uses PowerShell 7. I believe version 2023.2 and earlier use PowerShell 5, so perhaps that script will work with those versions.
- Support
  
  Apr 15, 2026
  
  Hello Shawn,
  
  Thank you for pointing out the behavior. We updated the article accordingly.