# Check Email Authenticity

If you are not sure about the authenticity of the email you received from Postman, you can check your email header.

## Outlook

If you are using Outlook, you can go to **File > Properties > Internet headers.**

![](https://4126954886-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-MAQH3DF49Lq0AJudrbF%2Fuploads%2Fgit-blob-0ba64cb09a879445212cbf394f4724c53e3bb604%2Fpostman-prop-file.png?alt=media)

![](https://4126954886-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-MAQH3DF49Lq0AJudrbF%2Fuploads%2Fgit-blob-daf1d79acffc0a2421c6cf3ca545f7a1f88886bc%2Fpostman-prop-header.png?alt=media)

What you want to see is the part of the header that shows the **authentication results**. You should be able to find something like this (see below).

{% hint style="success" %}
**Authentication-Results**:\
spf=**pass** smtp.mailfrom=<`someuniquemessageid`>[@mail.postman.gov.sg](mailto:010001732fa75c8d-6f7b6c04-ec03-4b1e-820b-9bf34a69d10c-000000@mail.postman.gov.sg);\
dkim=**pass** (signature verified) header.i=@[mail.postman.gov.sg](http://mail.postman.gov.sg/);\
dmarc=**pass** (p=none dis=none) d=[postman.gov.sg](http://postman.gov.sg/)
{% endhint %}

## Gmail

In Gmail, you need to go to **show original** to check the SPF, DKIM, and DMARC records.

![](https://4126954886-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-MAQH3DF49Lq0AJudrbF%2Fuploads%2Fgit-blob-2ae019338a5a0ee8ed774b2a6cee23abaf666a80%2Fpostman-spf-check-header-gmail.png?alt=media)

![Make sure that SPF, DKIM, and DMARC are all 'PASS'](https://4126954886-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-MAQH3DF49Lq0AJudrbF%2Fuploads%2Fgit-blob-a19ab7a359cb0c348a727fcf0cf468e3f0ab9d5c%2Fpostman-spf-check-gmail.png?alt=media)