This shutdown will have an impact on people who rely on GMass for their email warm-up strategy. Without GMass or a similar service, businesses may find it difficult to warm up their email accounts efficiently and establish a positive reputation with Gmail.

However, there are other alternatives that businesses can explore to create their email warm-up strategy. One of the most popular options is to use a third-party service like Saleshandy, which provides similar features to GMass and can help businesses establish a positive reputation with Gmail. These services allow businesses to gradually increase the volume and frequency of their emails, while also providing analytics and other tools to help optimize email performance.