You don't get high search engine rankings just by submitting your website to search engines. That is very important to know. You have to get the valid back also to get good rank or position in search engines. Website submission to different search engines or directories is necessary regarding website promotion and its search engine optimization. To get listed in search engines or directories is necessary for its ranking as well as to get traffic.

You invite search engines to visit your website

When you submit your website URL to a search engine, you basically ask the search engine spiders to visit your website and to evaluate it. If the search engine spiders cannot find anything useful on your site, they won't list your website.

It doesn't make sense to submit your website to search engines if you haven't optimized it before.

You get links from related websites

By submitting your website to Internet directories, you can get inbound links from related web pages. Usually, the category pages on Internet directories are considered related web pages if your website fits in the selected category. For example, if you sell laptops then you have a link from a related web page if your website is listed in the "Laptop" category on an Internet directory. Inbound links can greatly increase the search engine rankings of a website if the links contain the right keywords and if the links come from related web pages. For that reason, links from Internet directories can have a very positive effect on the search engine rankings of your website. Web page optimization and link building are more important than search engine submission. However, search engine submission still helps you to inform search engines and Internet directories about your website.

What can happen if you don't do this correctly?

You won't get high search engine rankings if you submit your website before optimizing your pages. Submitting your website to search engines is pointless if your web pages are not search engine ready. If you don't use your own domain name or if your website is hosted by an unreliable web host then it is likely that your website will not be listed on search engines. If the submitted website URL is only a redirection or a welcome page than its also likely that search engines won't index your website. So before your website submission it must be ready and properly optimized.