Swifter is an AI-powered email subject line creator that utilizes GPT-3 technology. Swifter can help you create emails for 5 types of situations – welcoming new customers, reminding them of abandoned carts, discounts and promotions, addressing their pain points, or celebrating goal events. You can also select from 3 different tones – friendly, bold or professional – to ensure the perfect message for your B2B or B2C audience.