The false discovery rate (FDR) is the most widely used error metric in modern multiple testing. We provide a comprehensive analysis of the admissibility of e-value-based procedures with FDR control. We consider both simultaneous and point procedures and introduce strong and weak notions of dominance. Every simultaneous procedure is strongly, and hence weakly, dominated by an admissible weighted-mean closed e-Benjamini--Hochberg ($\overline{\mathrm{eBH}}$) procedure, and thus weighted-mean $\overline{\mathrm{eBH}}$ procedures form a complete class. Every constant-free weighted-mean $\overline{\mathrm{eBH}}$ procedure is admissible at every level, and we propose two ways for choosing constant-free weights based on side information, such as pre-screening data. Within the symmetric class, the usual mean $\overline{\mathrm{eBH}}$ procedure is the largest element if and only if the FDR level is small enough; otherwise this class has no largest element. We also obtain results on the admissibility of symmetric weighted-mean $\overline{\mathrm{eBH}}$ procedures with non-zero constant terms. Point e-testing procedures have a parallel theory of admissibility. These results highlight the central role of weighted-mean $\overline{\mathrm{eBH}}$ procedures in multiple testing.

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