SpamLLM: Leveraging Large Language Models for Robust Spam Email Classification.

Saved in:
Bibliographic Details
Title: SpamLLM: Leveraging Large Language Models for Robust Spam Email Classification.
Authors: He, Zhiyong1 (AUTHOR) 2012100740@niit.edu.cn, Liu, Chang2 (AUTHOR), Hu, Boyang3 (AUTHOR), Jia, Duo4 (AUTHOR), Murray, Richard (AUTHOR) rmurray@wiley.com
Source: International Journal of Intelligent Systems. 6/23/2026, Vol. 2026, p1-17. 17p.
Subjects: Spam filtering (Email), Language models, Spam email, Latent semantic analysis, Email security, Transformer models, Machine learning
Abstract: Spam email detection remains an ongoing challenge due to the increasing sophistication and evolving tactics employed by spammers. Traditional rule–based and machine learning (ML) detection methods have demonstrated limitations in adaptability and generalization. This paper proposes SpamLLM, a multimodal spam detection framework that leverages a frozen large language model (LLM) backbone integrated with semantic embeddings and structured metadata extracted from email headers and body statistics. Rigorous evaluations are conducted across four widely used spam detection datasets, and SpamLLM is compared against classical ML, deep learning, and pretrained Transformer‐based baseline models. The experimental results demonstrate that SpamLLM outperforms existing methods and achieves state‐of‐the‐art performance in accuracy, precision, recall, and F1 score. Notably, SpamLLM excels in handling diverse spam content and provides robust detection across various datasets. These findings underscore the potential of multimodal fusion approaches for advancing spam classification systems and suggest promising directions for future research in email security. [ABSTRACT FROM AUTHOR]
Copyright of International Journal of Intelligent Systems is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
Full text is not displayed to guests.
FullText Links:
  – Type: pdflink
Text:
  Availability: 1
Header DbId: egs
DbLabel: Engineering Source
An: 194784057
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
IllustrationInfo
Items – Name: Title
  Label: Title
  Group: Ti
  Data: SpamLLM: Leveraging Large Language Models for Robust Spam Email Classification.
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22He%2C+Zhiyong%22">He, Zhiyong</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> 2012100740@niit.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Liu%2C+Chang%22">Liu, Chang</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Hu%2C+Boyang%22">Hu, Boyang</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Jia%2C+Duo%22">Jia, Duo</searchLink><relatesTo>4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Murray%2C+Richard%22">Murray, Richard</searchLink> (AUTHOR)<i> rmurray@wiley.com</i>
– Name: TitleSource
  Label: Source
  Group: Src
  Data: <searchLink fieldCode="JN" term="%22International+Journal+of+Intelligent+Systems%22">International Journal of Intelligent Systems</searchLink>. 6/23/2026, Vol. 2026, p1-17. 17p.
– Name: Subject
  Label: Subjects
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Spam+filtering+%28Email%29%22">Spam filtering (Email)</searchLink><br /><searchLink fieldCode="DE" term="%22Language+models%22">Language models</searchLink><br /><searchLink fieldCode="DE" term="%22Spam+email%22">Spam email</searchLink><br /><searchLink fieldCode="DE" term="%22Latent+semantic+analysis%22">Latent semantic analysis</searchLink><br /><searchLink fieldCode="DE" term="%22Email+security%22">Email security</searchLink><br /><searchLink fieldCode="DE" term="%22Transformer+models%22">Transformer models</searchLink><br /><searchLink fieldCode="DE" term="%22Machine+learning%22">Machine learning</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Spam email detection remains an ongoing challenge due to the increasing sophistication and evolving tactics employed by spammers. Traditional rule–based and machine learning (ML) detection methods have demonstrated limitations in adaptability and generalization. This paper proposes SpamLLM, a multimodal spam detection framework that leverages a frozen large language model (LLM) backbone integrated with semantic embeddings and structured metadata extracted from email headers and body statistics. Rigorous evaluations are conducted across four widely used spam detection datasets, and SpamLLM is compared against classical ML, deep learning, and pretrained Transformer‐based baseline models. The experimental results demonstrate that SpamLLM outperforms existing methods and achieves state‐of‐the‐art performance in accuracy, precision, recall, and F1 score. Notably, SpamLLM excels in handling diverse spam content and provides robust detection across various datasets. These findings underscore the potential of multimodal fusion approaches for advancing spam classification systems and suggest promising directions for future research in email security. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of International Journal of Intelligent Systems is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=194784057
RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1155/int/2309553
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 17
        StartPage: 1
    Subjects:
      – SubjectFull: Spam filtering (Email)
        Type: general
      – SubjectFull: Language models
        Type: general
      – SubjectFull: Spam email
        Type: general
      – SubjectFull: Latent semantic analysis
        Type: general
      – SubjectFull: Email security
        Type: general
      – SubjectFull: Transformer models
        Type: general
      – SubjectFull: Machine learning
        Type: general
    Titles:
      – TitleFull: SpamLLM: Leveraging Large Language Models for Robust Spam Email Classification.
        Type: main
  BibRelationships:
    HasContributorRelationships:
      – PersonEntity:
          Name:
            NameFull: He, Zhiyong
      – PersonEntity:
          Name:
            NameFull: Liu, Chang
      – PersonEntity:
          Name:
            NameFull: Hu, Boyang
      – PersonEntity:
          Name:
            NameFull: Jia, Duo
      – PersonEntity:
          Name:
            NameFull: Murray, Richard
    IsPartOfRelationships:
      – BibEntity:
          Dates:
            – D: 23
              M: 06
              Text: 6/23/2026
              Type: published
              Y: 2026
          Identifiers:
            – Type: issn-print
              Value: 08848173
          Numbering:
            – Type: volume
              Value: 2026
          Titles:
            – TitleFull: International Journal of Intelligent Systems
              Type: main
ResultId 1