If you love expressing emotions through words, letter writing can be a surprisingly profitable side hustle. In today’s fast-paced digital world, many people still crave heartfelt, handwritten letters — but not everyone knows how to write them. That’s where you can turn your writing talent into income.

There’s a growing demand for custom letter writing services, from love letters and apology notes to thank-you cards, wedding vows, and even business correspondence. People hire skilled writers to craft meaningful messages that sound natural and personal. You can offer these services on freelancing platforms like Fiverr, Upwork, or Etsy, or promote them through your own website and social media pages.

To get started, build a small portfolio with sample letters in different tones — romantic, emotional, formal, or humorous. Use keywords like “custom letter writing,” “personalized letters,” or “handwritten message service” in your profiles to improve visibility through SEO and backlinks. Engage in off-page SEO strategies such as guest blogging, forum posting, and collaborations with stationery brands or relationship coaches.