今天，Gmail的市场地位有多稳固？
Gmail的主导地位似乎是由其投递能力、垃圾邮件过滤、可靠性和生态系统整合所驱动的。像ProtonMail这样的加密邮件服务提供商虽然提供了不同的权衡，但尚未实现主流采用。我很好奇Gmail的优势中有多少是技术层面的，多少是由于默认设置和用户锁定，以及加密邮件在不久的将来是否能够在类似规模上实现现实竞争。
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Gmail’s dominance seems driven by deliverability, spam filtering, reliability, and ecosystem integration.<p>Encrypted providers like ProtonMail offer different tradeoffs, but haven’t seen mainstream adoption.<p>Curious how much of Gmail’s advantage is technical vs defaults and lock-in, and whether encrypted email could realistically compete at similar scale in the near future.