The term 'spam' is generally used as an uncountable noun to describe unsolicited electronic messages. However, several sources indicate that it can also function as a countable noun, especially when referring to specific instances, types, or categories of spam. Dictionaries like Merriam-Webster and Grammarly explicitly acknowledge both usages. Usage of the plural form 'spams' is more common in informal contexts or when distinguishing between different kinds of spam. Some languages or regions may not favor the plural form. Documentation from email providers and anti-spam organizations tends to treat 'spam' as uncountable. An expert source emphasizes that the crucial aspect is the unsolicited nature of the messages rather than its grammatical countability.

The consensus is that 'spam' is primarily used as an uncountable noun when referring to unsolicited electronic messages in general. However, it can also function as a countable noun, particularly when referring to specific instances, types, or categories of spam. Usage of the plural form 'spams' is more common in informal contexts or when distinguishing between different kinds of spam. Native language speakers, such as those from German-speaking regions, often avoid using 'spams.' Dictionaries like Merriam-Webster and Grammarly explicitly recognize both countable and uncountable usages.

The expert from wordtothewise.com indicates that when discussing 'spam,' the crucial aspect is the unsolicited nature of the messages rather than whether 'spam' is countable or uncountable. The term carries a negative connotation and refers to unwanted communications.

Documentation from Microsoft Support, Google Support, and Spamhaus generally treats 'spam' as an uncountable noun when referring to unsolicited bulk email. While individual spam messages are managed and tracked, the overarching concept of 'spam' is handled as a general category.