MailChimp Pro: One of the best email marketing services, especially for small businesses.

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You will need to use a combination of free and premium plugins to control the cost. Below are some of the absolutely essential premium plugins for a small business website.

Functionality

WPForms (Pro) – The premium version will give you access to all the features you will need for lead generation. This includes PayPal and Stripe payments, conversation forms, email marketing belgium phone data integration, and more.
SeedProd – Helps you add a beautiful coming soon page and maintenance mode to your site while you are setting it up.
WP Mail SMTP Pro – Improves email deliverability and fixes WordPress not sending emails issue.
Marketing

OptinMonster - Helps you convert website visitors into leads and customers. You will need this for lead generation and conversion optimization.
MonsterInsights Pro – The best Google Analytics plugin helps you see where your users are coming from and what they do on your website. This allows you to make data-driven decisions to grow your business.
All in One SEO Pro : Improve your website's SEO ranking.
Safety

UpdraftPlus (Pro) – The premium version of the plugin includes incremental backups, automatic backups before updates, and multiple remote storage locations to store backups.
Sucuri Firewall – Website Firewall & Malware Protection
Now there are many more plugins and tools that you would like to use. We recommend that you try the free version first and see if it works for you. Many premium tools come with free trials, take advantage of that to see if you really need that tool.

As a business website, you want to spend money to grow your business. We don’t advise against spending money when it makes sense and you can afford it.