At present, the spam is very widespread phenomena, and it is unfortunately also present in WhatsApp.
The users receive spam messages like for example, “the only way that it will stay free is if you are a frequent user i.e. you have at least 10 people you are chatting with. To become a frequent user send this message to 10 people who receive it (2 ticks). Even your WhatsApp logo should turn Red to indicate a frequent user”. This message is absolutely fake.
When an unknown contact sends you a message, WhatsApp already asks you if this a spam message. If so, WhatsApp asks you to press the Report button. The contact will be blocked by WhatsApp if they will receive a lot of reports.
It is also possible to find a Report spam button in the Contact Info section. This section will allow you to report a saved contact/business.
WhatsApp working on new notifications for spam and chain letters. WhatsApp will alert their users if they receive a message that has been forwarded many times. Even if the user intends to forward these message themselves. The warning messages permit the users to recognize that the message is possible to spam or a chain letter.
Chain letter message contains mischief claims and which urge other WhatsApp users to forward the message to all their contacts to keep amplifying the spread are a staple sight on the platform.
If the user receives a message that has been designated as frequently forwarded, the user will see “Forwarded Many Times” at the top of the chat bubble (under sender name).