The Plural of Spam is........ Having multiple Email accounts. Actually, in the context of Email distribution, "spam",is both an adjective and a verb. So, this means that spam, when used as an adjective, doesn't have a plural, but rather the associated noun and its verb would be singular or plural. IE, the singular, "that email is spam", or the plural, "those emails are spam". As a verb, the infinitive form would be, "to spam", and its conjugations would follow normal English conventions; Present tense; I spam; you spam; they spam; he,she, or it spams. Past participle; spammed Progressive tense or present participle; "spamming" For instance, the future perfect, they "will have been spammed" as of tomorrow. I'm still working on an example of the subjunctive pluperfect. While this list is incomplete, I hope that it serves as a guide for your future endeavors in utilizing the word "spam" to its fullest potential. As always, I am glad to contribute any effort necessary to maintain the integrety of the English language, and to prevent it being further mutilated by contemporary culture.