Q&A: Is there an online program that can find out the email host of an email address?

by Cushing Memorial Library and Archives, Texas A&M

Question by cole: Is there an online program that can find out the email host of an email address?
I need to do a large data file search of mutliple emails, and am looking to see if I can find out what type of provider an email uses through a program or application. For example, if someone is using Microsoft Outlook. Also, if possible the load time, if it is open-relay or not, etc.

Thanks!

Best answer:

Answer by ► HairSupply ◄
Take a look at the headers come in every email you’ve got

EDIT:
standard email format comes with User-agent infomation.

eg:
From: George W Bush
User-agent: Mozilla Thunderbird 1.0 (Windows/20041206)

that means the email was sent using Thunderbird for Windows

What do you think? Answer below!