Thanks, Andrew. Klaviyo drove a strong first quarter to kick off 2025 as we continue to deliver efficient growth at scale. Revenue grew 33% year-over-year to $280 million, and we delivered a non-GAAP operating margin of 11.6%. We are really pleased with these results. Our first quarter results were continued proof of the value we deliver to customers and reflect the successful execution of our growth strategy. We are adding new customers, growing in the mid-market, expanding with existing customers, and expanding internationally. We ended Q1 with more than 169,000 customers, up 16% year-over-year. This was better than our expectations as our customer retention was stronger than anticipated following the pricing updates we announced during the quarter and remained consistent with prior quarters. In fact, our customer retention rates coming off the holiday season were consistent with the trends we saw in Q1 last year. Our success in attracting larger customers is evident as we ended the quarter with 3,030 customers with over $50,000 in ARR, up 40% year-over-year. And we now have more than 1,000 customers paying us more than $100,000 in ARR. We continue to see a strong trend of new lands in this cohort, demonstrating the payoff from our investments in the mid-market and above. We delivered a Q1 NRR of 108%, in line with last quarter, driven by consistent gross revenue retention, improvement in email expansion and to a lesser extent, benefit from the pricing changes. While we don't forecast or guide to this number, we are pleased with the consistency we're seeing. We are continuing to drive progress in our cross-sell motion, and we're seeing more of our larger customers land on Klaviyo with multiple products. In Q1, our SMS penetration within SMB and mid-market customers increased again. We saw strong adoption of our marketing analytics application, and we are seeing a lot of interest from customers for our new Customer Hub service offering. As you heard from Andrew, our investments made towards expanding internationally on both the go-to-market and product fronts are delivering returns as our strong international growth continued in the first quarter. EMEA revenue grew 47% year-over-year, and total EMEA and APAC revenue grew 42% year-over-year. Our Q1 revenue overperformance was driven by broad-based strength. Consistent with our expectations, the pricing updates that went live in February contributed an immaterial amount to first quarter revenue. We continue to believe that the pricing changes will have a minimal impact on full year growth rates, and we will only provide further updates if our view changes. Moving on, first quarter non-GAAP gross margin was 77%, down approximately 3 points year-over-year, primarily due to increased infrastructure costs and the continued growth of our SMS product. A portion of the incremental infrastructure costs supported the expansion of important feature capabilities for larger customers and new verticals and our ongoing commitment to provide infrastructure to serve businesses of all sizes. Turning to non-GAAP operating expenses. As a reminder, in Q1, we began accruing for our employee cash bonus program on a quarterly basis, resulting in an increase in each line item year-over-year. G&A as a percentage of revenue declined year-over-year as a result of smaller one-time items compared to last year. R&D as a percentage of revenue also declined due to an increase in capitalized software. Sales and marketing as a percentage of revenue increased year-over-year as a result of timing of marketing program spend and incremental investments for B2C CRM. For the first quarter, our non-GAAP operating income was $32 million, representing a non-GAAP operating margin of 11.6%. This came in better than our guidance, primarily as a result of the revenue upside we saw in the quarter. We generated free cash flow of $6.6 million during the quarter, which was better than expected due to the higher collections and timing of payments. As a reminder, we paid out our employee cash bonus program in Q1, which impacted free cash flow. Before turning to guidance, let me briefly discuss the macro-environment. While potential tariffs and consumer sentiment are top of mind for our customers and for Klaviyo, thus far, we have not seen a material impact on our business. Klaviyo drives revenue for our customers from their existing consumers, which is typically a highly efficient and profitable growth channel. Should they need to scale back, many customers have told us that retention would be one of the last areas where they would reduce spending. Instead, they would be more likely to pull-back on new consumer acquisition costs such as ad spending. Klaviyo's position as a high ROI must have revenue generator for brands of all sizes gives us greater stability through a range of economic cycles. Our business performed well in Q1 and remain strong. However, we are also paying close attention to the macro-environment and the impact it may have on our business. As a result, our guidance reflects a balance between the strength of our business and the uncertainty of the macro-environment. We believe this is a prudent approach as it factors in some potential economic risk. As we look ahead, we remain optimistic about 2025 and beyond. For Q2, we expect revenue of $276 million to $280 million, representing year-over-year growth of 24% to 26%, driven by continued strength upmarket and internationally. We expect second quarter non-GAAP operating income of $28.5 million to $31.5 million, representing a non-GAAP operating margin of 10% to 11%. For the full year 2025, we are raising revenue guidance to $1.171 billion to $1.179 billion for year-over-year growth of 25% to 26%. We expect non-GAAP operating income of $133 million to $139 million, representing a non-GAAP operating margin of 11% to 12%. In closing, we are off to a strong start this year, and our growth strategy is bearing fruit as we are delivering balanced top and bottom-line growth efficiently and at scale. Our position in the market continues to strengthen. We are the only CRM for consumer brands that can power personalized engagement with our marketing automation, customer service, and marketing analytics application built on top of the Klaviyo data platform. This vertically-integrated offering is establishing a foundation of sustainable growth for both Klaviyo and our customers. And with that, I'll open the call up for Q&A. Operator?