Shares of Klaviyo, Inc. (NYSE:KVYO) surged 5.70% in after-hours trading on Tuesday, following the release of its impressive first-quarter earnings report and raised guidance for the upcoming periods.

The customer data and marketing automation platform reported quarterly earnings of $0.14 per share, surpassing the analyst consensus estimate of $0.12 by 16.67%. This represents a 7.69% increase from the same period last year. Klaviyo's quarterly sales reached $279.83 million, beating the analyst consensus estimate of $267.83 million by 4.48% and marking a significant 33.26% year-over-year growth.

Adding to the positive sentiment, Klaviyo raised its revenue guidance for both the second quarter and full fiscal year 2025. The company now expects Q2 revenue between $276 million and $280 million, above the consensus of $275.8 million. For the full year, Klaviyo projects revenue in the range of $1.171 billion to $1.179 billion, indicating a year-over-year growth of 25% to 26%. The company also anticipates a strong Q2 operating margin of 10%-11%, further boosting investor confidence in its financial performance and growth prospects.