A tool for checking whether your email campaign will end up in primary/promotion or spam inbox?

I spent an hour testing email, yesterday. It kept ending in promotions. So, I changed one thing at a time to see what was the actual reason behind. It was the title. I could have saved a ton of time if I knew a tool that would hint me what might be the potential issues on my emails based on the content. Here's my question to you, folks: Is there a tool, to which I can send the email and it would say what might be the potential reasons (e.g specific wording) it will not end up in the primary inbox?