"Spam messages" refers to unwanted or unsolicited messages that are sent to a large number of people, usually through email or text messages. These messages are often promotional or contain irrelevant or inappropriate content. Full definition
If someone can send send spam messages with tiny transactions through this bank for free and delay genuine transactions, it should not be acceptable. (slaw.ca)
About 57 percent of respondents said they have received spam messages via virtual communities, a 71 percent rise from 2008. (inc.com)
There is no fee to sign up, and the service does not use your email for spam messages. (rewardexpert.com)