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arXiv · 2203.16743

A Peek into the Political Biases in Email Spam Filtering Algorithms During US Election 2020

Hassan Iqbal·Usman Mahmood Khan·Hassan Ali Khan·Muhammad Shahzad
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Abstract

Email services use spam filtering algorithms (SFAs) to filter emails that are unwanted by the user. However, at times, the emails perceived by an SFA as unwanted may be important to the user. Such incorrect decisions can have significant implications if SFAs treat emails of user interest as spam on a large scale. This is particularly important during national elections. To study whether the SFAs of popular email services have any biases in treating the campaign emails, we conducted a large-scale study of the campaign emails of the US elections 2020 by subscribing to a large number of Presidential, Senate, and House candidates using over a hundred email accounts on Gmail, Outlook, and Yahoo. We analyzed the biases in the SFAs towards the left and the right candidates and further studied the impact of the interactions (such as reading or marking emails as spam) of email recipients on these biases. We observed that the SFAs of different email services indeed exhibit biases towards different political affiliations. We present this and several other important observations in this paper.

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Hassan Iqbal, Usman Mahmood Khan, Hassan Ali Khan, Muhammad Shahzad. 2022-03-31. A Peek into the Political Biases in Email Spam Filtering Algorithms During US Election 2020. https://doi.org/10.1145/3485447.3512121

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