Bitrix24 Support may request email message headers (RFC headers) to solve certain problems.
In this article, I'll show you where can you find these headers in different email services and clients.
Gmail.com
Open the message > click More button > Show original.
Yahoo.com
Open the message > click More button > Show raw message.
Aol.com
Open the message > click More > View Message Source.
Outlook.com (hotmail.com)
Open the message > click Actions > View message source.
MS Outlook 2010
Open the message > click File > Info > Properties.
Mozilla Thunderbird
Select the message > click More > View Source.
