MxToolbox Support and Frequently Asked Questions

What can we help you with?

How do I tell MxToolbox about feedback or feature suggestions I have regarding the free SuperTools?


We welcome suggestions that can make our SuperTools better. You can submit your suggestions/feedback to us by filling out our feedback form here. We cannot always add your idea, but we love to get feedback! Thank you.


Why do my headers fail DKIM when using the MxToolbox Header Analyzer?


There is a known problem with messages from Google GSuite/Gmail where the header gets altered when you copy the message, causing it to fail DKIM. Please use the guide below to get your message headers without the changes made by Google.

How to download the EML file from Google GSuite/Gmail:

1. Locate your message in the Google GSuite/Gmail inbox and click it.
2. Locate the three (3) vertical dots at the upper right.
3. Click the dots and choose “Show Original”.
4. Click the “Download Original” link.
5. Save the .eml file on your computer.
6. Open the .eml file with a text editor, such as Windows Notepad or TextEdit for Mac.
7. Copy all of the text in the file.
8. Paste the text into the Header Analyzer at https://mxtoolbox.com/EmailHeaders.aspx

Can I delete data submitted to Email Header Analyzer tool?


Yes, when you are using the Email Header Analyzer tool at the bottom of the page is a link to "Permanently forget this email header".

Clicking this will delete that message from our system. If you have lost the link to your header, we cannot retrieve it. All headers are automatically deleted after 40 days.


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