While nobody have commented about this as I might not able to reply later I will be sharing some stuff. Hope that someone find this helpful.
Let's start with the problem depicted in the question. The OP is using Gmail. They are receiving SPAM and due to certain circuntances they are receiving exactly three copies. That's it. The OP doesn't share what they have tried, don't what they have found here or in any other place.
The question is about using a web application, in this case Gmail. Great. Unfortunately it's not a practical, detailed question. It doesn't meet the quality standards.
Despite the declining of participation in the site in the lasts years, gmail is still the 2nd most popular tag due to the number of questions. There are 4,154 questions. [gmail] is:question spam returns 274 questions.
By the other hand, email spam is a very common problem. Anyway, lets put the Web to a aside. Gmail web app has help button. This open dialog with a search box. Writing
spam shows multiple help articles and "Ask the Help Community"
The question set as the duplicate target was posted 11 years ago it was viewed +30k times, has +2, has 7 answers, three of them are visible. The top answer has +6. It recomends to report the the spam messages as spam and to create a filter, which match the basic recommendations.
I will not make mentions about any OP attribute because the close of the question was based exclusively on the question content.
In case that the OP or someone else consider that the target question doesn't answer satisfactorily the question, it should be edited to explain why the answers of the duplicate target are not helpful. It's also recommended to look at other gmail questions and to include the most relevant findings and why they don't meet the OP / contributors needs.
NOTES: Gmail end-users can't set up custom anti spam measures, but end-users might participate in anti spam fight efforts. From the Gmail web app the basic is by using the mark as spam feature. The next level is to submit feedback from the help menu. The third level is participating in the Gmail Community at https://support.google.com/mail/community.
People interested in questions related to spam might ask Meta Stack Exchange for tips about how to find them as well related chatroom . The tag site-crossover might give some ideas about initiatives about cross site collaboration.
I suggest that answers to this question be focused on coodinate efforts, in case that someone considers that it be necessary, to improve the question closed as duplicate.
- Why do I see a message that my question does not meet quality standards?
- As a mod when should I vote to close content that is not flagged?