Offer a friendly goodbye
The way you say goodbye to unsubscribing users matters. Make sure your goodbye message matches how you usually talk to your audience. If your style is friendly and relaxed, suddenly sounding very formal might seem strange.
Also, avoid sounding upset or blaming users for leaving. Instead, be kind and friendly. This leaves a good impression. Even if users leave now, they might think positively about your brand and come back later.
Pro Tip: How do you stay in touch with users after they've unsubscribed? Provide them with links to follow your social networks as part of your goodbye message.