Klaviyo Inc. $(KVYO)$ has announced its financial results for the second quarter ending June 30, 2025. The company reported a revenue of $293.1 million, reflecting a 32% increase year-over-year. The gross profit for the quarter was $221.9 million, with a gross margin of 76%. Despite these gains, Klaviyo reported an operating loss of $31.3 million, with an operating margin of -11%. On a non-GAAP basis, the company achieved an operating income of $40.9 million, corresponding to a non-GAAP operating margin of 11%. The company also provided an updated revenue guidance for the fiscal year 2025, projecting revenue between $1.195 billion and $1.203 billion, which represents a year-over-year growth of 27% to 28%. Klaviyo experienced significant international growth, with a 42% year-over-year revenue increase in the EMEA and APAC regions, and maintained a Net Revenue Retention $(NRR.UK)$ of 108% as of June 30, 2025. The company's platform serves over 176,000 customers globally, enhancing brand personalization and data-driven actions in real-time.