thanks for sharing your query,
i have some ways to find best keywords is:
1.Get suggestions from the source
2.Dig into related searches
3.Mine the world’s largest wiki
4.Hack books and courses
5.Do some pay-per-click advertising (even if you don’t want to)
6.Get a 10 from Google AdWords Keyword Planner
I have started a new post is https://itprospt.com/1-and-1-webmail/ and I am not finding the ways to find the best and rankable keywords for it.
Can anybody tell me how to find it?
What I would do is make a list of your top competitors and go on semrush and export their top keywords and focus on outranking them. More times than not, I believe your competitors can give you great keywords. And if they are successful with those keywords then you will more than likely be successful if you can outrank them (according to your UX, conversion optimization, etc.).
As far as a tool that generates the most used for a particular industry, I am unsure. I know most provide relevant terms once you input a keyword. So I would start with the broad keywords that you know are high traffic for the auto retailer industry and dig into relevant terms then compare to your competitors.
As a work-round, I even have the iFrame embedded in a modal conversation and I seize the dialog's 'near' occasion after which query AuthNet for the profile and related price profiles after which update the nearby document with any changes discovered here.