È ora disponibile un nuovo campo di metadati, denominato Headers, che permette di estrarre tutte le intestazioni SMTP delle email in un'unica soluzione.
Di seguito, un elenco completo dei nomi delle intestazioni ufficiali (secondo RFC) che possono essere presenti nelle email:
- Accept-Language
- Alternate-Recipient
- ARC-Authentication-Results
- ARC-Message-Signature
- ARC-Seal
- Archived-At
- Authentication-Results
- Auto-Submitted
- Autoforwarded
- Autosubmitted
- Bcc
- Cc
- Comments
- Content-Identifier
- Content-Return
- Conversion
- Conversion-With-Loss
- Date
- Deferred-Delivery
- Delivery-Date
- Discarded-X400-IPMS-Extensions
- Discarded-X400-MTS-Extensions
- Disclose-Recipients
- Disposition-Notification-Options
- Disposition-Notification-To
- DKIM-Signature
- DL-Expansion-History
- Downgraded-Bcc
- Downgraded-Cc
- Downgraded-Disposition-Notification-To
- Downgraded-Final-Recipient
- Downgraded-From
- Downgraded-In-Reply-To
- Downgraded-Mail-From
- Downgraded-Message-Id
- Downgraded-Original-Recipient
- Downgraded-Rcpt-To
- Downgraded-References
- Downgraded-Reply-To
- Downgraded-Resent-Bcc
- Downgraded-Resent-Cc
- Downgraded-Resent-From
- Downgraded-Resent-Reply-To
- Downgraded-Resent-Sender
- Downgraded-Resent-To
- Downgraded-Return-Path
- Downgraded-Sender
- Downgraded-To
- Encoding
- Encrypted
- Expires
- Expiry-Date
- From
- Generate-Delivery-Report
- Importance
- In-Reply-To
- Incomplete-Copy
- Keywords
- Language
- Latest-Delivery-Time
- List-Archive
- List-Help
- List-ID
- List-Owner
- List-Post
- List-Subscribe
- List-Unsubscribe
- List-Unsubscribe-Post
- Message-Context
- Message-ID
- Message-Type
- MMHS-Acp127-Message-Identifier
- MMHS-Codress-Message-Indicator
- MMHS-Copy-Precedence
- MMHS-Exempted-Address
- MMHS-Extended-Authorisation-Info
- MMHS-Handling-Instructions
- MMHS-Message-Instructions
- MMHS-Message-Type
- MMHS-Originator-PLAD
- MMHS-Originator-Reference
- MMHS-Other-Recipients-Indicator-CC
- MMHS-Other-Recipients-Indicator-To
- MMHS-Primary-Precedence
- MMHS-Subject-Indicator-Codes
- MT-Priority
- Obsoletes
- Organization
- Original-Encoded-Information-Types
- Original-From
- Original-Message-ID
- Original-Recipient
- Original-Subject
- Originator-Return-Address
- PICS-Label
- Prevent-NonDelivery-Report
- Priority
- Received
- Received-SPF
- References
- Reply-By
- Reply-To
- Require-Recipient-Valid-Since
- Resent-Bcc
- Resent-Cc
- Resent-Date
- Resent-From
- Resent-Message-ID
- Resent-Reply-To
- Resent-Sender
- Resent-To
- Return-Path
- Sender
- Sensitivity
- Solicitation
- Subject
- Supersedes
- TLS-Report-Domain
- TLS-Report-Submitter
- TLS-Required
- To
- VBR-Info
- X400-Content-Identifier
- X400-Content-Return
- X400-Content-Type
- X400-MTS-Identifier
- X400-Originator
- X400-Received
- X400-Recipients
- X400-Trace
Le intestazioni personalizzate, se non incluse tra quelle ufficialmente approvate, devono iniziare con il prefisso X-.
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