Samsung also continues to match Google's promise of at least seven years of software updates for its Galaxy S models. That is to say, you'll feel like you got your money's worth when splurging on Samsung's flagship phone.
Diff: 36 upgraded, 3 added
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If the subject line of the email is irrelevant to customers, they will ignore it multiple times. But, if it keeps repeating, they are intercepted and unsubscribed from your emails. So, send relevant emails for the benefit of the customer. Don't send emails that often only focus on sales, offers and discounts.
来源：阿里研究院：《“银发+AI”应用 趋势报告》