> For the complete documentation index, see [llms.txt](https://postman-v1.guides.gov.sg/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://postman-v1.guides.gov.sg/faq/faq-recipients/check-email-authenticity.md).

# 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.**

![](/files/-MBn1qPpL1bMemnElWMJ)

![](/files/-MBn0q3MNGyWssmQDs7t)

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.

![](/files/-MBn4XuskrRQRAnZeGWx)

![Make sure that SPF, DKIM, and DMARC are all 'PASS'](/files/-MBn3zZNzbzLyZWyA2jE)