英文水平有限，若有错误，请大佬指出。 
Hey [博主的名字],  
 I have been following your profile on Youtube and really loved your post(s) on [博主的某个视频标题]. My name is [你的名字] and I work for [你公司的名字]. We sell （你卖的商品或商品的名字）. Since you are in line with our brand, I thought I would reach out to see if you would be open to testing our product and doing a collaboration together!  Let me know if you are interested and I will send more details!  
Thanks!  
[你的名字]   
 
Hey [博主的名字],  
 I have been following your profile on Youtube and really love your inspirational posts showing your[博主的类型，写美妆或数码等的单词] journey.  My name is [你的名字] and I work for [你公司的名字]. We sell（你卖的商品或商品的名字） , for（你的目标人群）. Since you are passionate about sharing your [博主的类型，写美妆或数码等的单词]journey, I thought I would reach out to see if you would be open to testing our product and doing a collaboration together! Let me know if you are interested and I will send more details!  
 
Thanks! 
 [你的名字]    
 
 
Hey [博主的名字],   
My name is [你的名字] and I’m with [你公司的名字]. We have been following your profile on Youtube and love your posts on [博主的类型，写美妆或数码等的单词]. We would like to invite you to become a cooperative partner for our company! We believe that you believe that using （你卖的商品或商品的名字） will bring happiness （根据产品特性写，保健品写健康/化妆品写时尚）to your life, this is consistent with the mission of our company. As acooperative partner, you’d partner with us for social media campaigns and content featuring our （你卖的商品或商品的名字）.We will provide you with free products, and need you to help us do publicity in your video.Your followers will get a 20% discount. If you are interested, I'll be happy to talk to you more!  
 
Thanks!  
[你的名字]
 
小弟还想分享一份500个红人邮箱的文档，如有需要可以留言，我会一一私杏回复。