Once you have an email marketing tool (many of which are inexpensive or even free), experiment with sending newsletters (with fancy new blog posts) and other targeted promotions to your customers.
Email marketing is worth using for a small business, especially if you already have a regular group of people using your services. In this case, be aware of marketing consents. The customer must give consent to receive material from your website. Communicate this in a simple and understandable way, because if the customer or potential customer does not understand what they are giving marketing consent for, that consent will not be valid. Keep this in mind.
Don't forget about "word of mouth" - local marketing.
You need to realise the value and importance of local customers. If you run a small business and have an office or stationery store, try to make your business known to all local residents. After a while, you will see the results: if you are reliable and your services meet your customers' expectations, they will recommend you to others. Therefore, it is worth investing in a banner, sign or lighting for your business.
As we have written before, testimonials from satisfied customers are a great added value for you and confirm the credibility of your services or products. Publish them on your website. Recommendations will encourage new audiences to choose you.