亲切友好型：使用比较个性化的问候语，避免过于生硬的表述。例如，“Dear [客户名字]，Hope this email finds you well.” 或者 “Hi [客户名字]，Wishing you a wonderful day!” 这种问候能让客户在打开邮件的瞬间感受到你的友好。不过，要注意避免使用过于随意的问候，像 “Hey” 在比较正式的商务场合可能不太合适，除非你和客户已经建立了非常亲密的关系。

专业正式型：在一些比较严肃的商务沟通或者与新客户首次接触时，可以使用 “Respected [客户名字]” 或者 “To Whom It May Concern（当不确定具体收件人时）” 这样的问候语。同时，保持语气的礼貌，如 “Greetings from [你的公司名称]. We trust this communication finds you in good health and high spirits.”

亲切友好：如果客户提出问题或者投诉，首先要表达理解和歉意。例如，“We truly understand your frustration regarding [问题内容]. We apologize for any inconvenience this may have caused you.” 然后再详细说明解决问题的步骤，“We are currently working on a solution and we'll keep you updated. We'll do our best to make sure this issue is resolved as quickly as possible.”

专业正式：在处理比较复杂或者涉及法律责任等问题时，要保持冷静和专业。例如，“We have received your complaint regarding [问题内容]. Our legal and customer service teams are conducting a thorough investigation in accordance with our established procedures. We will communicate the results to you in a timely and objective manner.”

亲切友好：当提出自己的观点或者建议时，使用温和、协商的语气。例如，“We were thinking that it might be a great idea if we could...” 或者 “Perhaps we could consider...” 这种表达方式给客户一种你在和他们共同探讨问题，而不是强硬地要求他们接受你的想法的感觉。

专业正式：在阐述专业的业务内容、规则或者合同条款等时，语气要坚定但不失礼貌。例如，“As per our company's policy, the payment terms are as follows...” 或者 “According to the industry standards and our internal regulations, the delivery schedule is non - negotiable under normal circumstances.”

表达观点时：

处理问题或投诉时：

亲切友好：结尾可以使用比较温暖的祝福语，如 “Looking forward to hearing from you soon. Have a lovely week ahead!” 或者 “Wishing you and your team all the best. Take care!” 再加上你的名字，例如 “Best regards, [你的名字]”。

专业正式：在较为正式的邮件中，结尾可以是 “Thank you for your attention and cooperation. Sincerely, [你的名字]” 或者 “Yours faithfully（当开头是‘To Whom It May Concern’时）, [你的名字]”。这样的结尾体现了你的尊重和专业精神。