I Built a Tiny YouTube Tool That Reached $500/Month — Here’s What I Learned

I didn't build a startup. I didn't raise funding. I didn't have a team of engineers. I simply built a small tool to solve a problem I personally had. And eventually, that little project started making money. **YTtoText reached $500/month.** Here's what happened. ## The Problem Was Almost Too Simple The original idea behind YTtoText was extremely simple. I was working with YouTube videos and constantly needed to find specific information inside long videos. Watching an entire 60-minute video just to find one sentence is incredibly inefficient. Then there was another problem. Copying subtitles manually is annoying. Downloading captions isn't always straightforward. And if you want to search through a long interview, podcast, tutorial, or lecture, the video itself isn't always the best format. I thought: **What if I could just turn the YouTube video into searchable text?** That became YTtoText. ## I Started With a Very Small MVP The first versi...

发送海外邮箱出现发送失败被退信,怎么解决?

每日金句 自修自持莫道此间非彼岸,即心即佛须知东土是西天

在国内,我们的企业邮箱大多可能会选择腾讯,阿里或者网易这几家。但是我们在使用过程中会遇到给海外客户发邮件时会出现拒收的情况。

以腾讯企业邮箱为例,如下截图:


被拒原因:域名DNS记录未设置或者设置错误导致对方拒收此邮件。

那么这种情况我们应该如何处理?

其实答案在截图的解决方案中——设置正确的DNS或者SPF。

可以从腾讯微信企业微信的帮助中心看到具体的解决方案,即在域名解析处增加一条TXT记录,具体内容如下:

TXT记录值为:v=spf1 include:spf.mail.qq.com ~all

这条解析的作用就是以IP做地址认证,是非常高效的垃圾邮件解决方案。加了SPF解析后,就能够解决发送海外邮件被退信的问题。

参考文档:

收发信返回错误码

https://open.work.weixin.qq.com/help2/pc/20038?person_id=1&subtype=1&no=1000580&id=20012

550 SPF check failed

https://open.work.weixin.qq.com/help2/pc/20047?person_id=1

什么是SPF?如何设置企业邮箱的SPF呢?

https://open.work.weixin.qq.com/help2/pc/19817?person_id=1

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