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This package was approved as a trusted package on 9/3/2019.

Blat is a small, efficent SMTP command-line interface (CLI) mailer for Windows. It is the SMTP sending part of an eMail User Agent (MUA) or eMail client. As such, Blat sends eMail via SMTP (or internet eMail) from the command line.

Combine with Windows integrated command-line program at to schedule sending emails or posting later.

RFC compliance

To install Blat, run the following command from the command line or from PowerShell:

C:\> choco install blat

To upgrade Blat, run the following command from the command line or from PowerShell:

C:\> choco upgrade blat


  • tools\chocolateyInstall.ps1 Show
    $packageName = "blat"
    $urlArray = @('', '')
    $url = $urlArray[0]
    $toolsDir = "$(Split-Path -parent $MyInvocation.MyCommand.Definition)"
    $url64 = $urlArray[1]
    $checksum = '4ec7945d3ac5696a811fd2d6bd59fe5f1799851a818b99813918d4ac94981318'
    $checksumType = 'sha256'
    $checksum64 = 'bffbacb4673711b866237d9264891e010743413d58a910ebc3b8b26f3f1c8943'
    $checksumType64 = 'sha256'
    Install-ChocolateyZipPackage -PackageName "$packageName" `
                                 -Url "$url" `
                                 -UnzipLocation "$toolsDir" `
                                 -Url64bit "$url64" `
                                 -Checksum "$checksum" `
                                 -ChecksumType "$checksumType" `
                                 -Checksum64 "$checksum64" `
                                 -ChecksumType64 "$checksumType64"

Virus Scan Results

In cases where actual malware is found, the packages are subject to removal. Software sometimes has false positives. Moderators do not necessarily validate the safety of the underlying software, only that a package retrieves software from the official distribution point and/or validate embedded software against official distribution point (where distribution rights allow redistribution).

Chocolatey Pro provides runtime protection from possible malware.


This package has no dependencies.

Package Maintainer(s)

Software Author(s)

  • Pedro Mendes
  • Mark Neal



Release Notes


Version History

Version Downloads Last updated Status
Blat 3.2.16 680 Monday, August 8, 2016 approved
Blat 3.2.15 286 Tuesday, June 28, 2016 approved
Blat 3.2.14 203 Thursday, June 16, 2016 approved
Blat 3.2.13 243 Thursday, June 16, 2016 approved
Blat 3.2.12 417 Monday, December 28, 2015 approved
Blat 3.2.11 265 Thursday, November 12, 2015 approved
Blat 3.2.10 239 Wednesday, October 21, 2015 approved
Blat 3.2.9 226 Sunday, October 18, 2015 approved
Show More

Discussion for the Blat Package

Ground rules:

  • This discussion is only about Blat and the Blat package. If you have feedback for Chocolatey, please contact the google group.
  • This discussion will carry over multiple versions. If you have a comment about a particular version, please note that in your comments.
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  • Tell us what you love about the package or Blat, or tell us what needs improvement.
  • Share your experiences with the package, or extra configuration or gotchas that you've found.
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