grammarlyMay 14, 2026

Email Blast: What It Is and How to Send One, With Templates (opens in new tab)

An email blast sends one message to a large subscriber list, making it effective for promotions, launches, and broad announcements. Its success depends on focused copy, proper timing, audience relevance, and reliable measurement. Blasts maximize reach, but targeted campaigns are better when personalization or behavioral follow-up is needed. ## What an Email Blast Is - A one-time message sent broadly without individual personalization. - Common uses include flash sales, product launches, company news, and announcements. - Unlike an email campaign, it is not usually triggered by behavior or delivered as a sequence. - Blasts and campaigns can work together: a blast introduces the message, while follow-ups target engaged recipients. ## Preparing to Send - Use an email service provider rather than Gmail or Outlook to protect deliverability and comply with sending policies. - Choose a provider with: - Strong deliverability infrastructure - List management for unsubscribes and bounces - Mobile-responsive templates - Analytics for clicks and conversions - Build a permission-based list through opt-ins, purchases, or signup forms. - Avoid purchased or scraped lists, which can damage sender reputation and create legal risks. - Regularly remove invalid, unsubscribed, and consistently bouncing addresses. - Segment subscribers by factors such as purchase history, location, or engagement to improve relevance. ## Writing Effective Blast Copy - Give the email one clear goal, one central message, and one action. - Write a specific subject line that communicates a benefit or outcome. - Keep body copy concise, scannable, and focused on the reader’s benefit. - Use one prominent call to action that clearly explains what recipients should do. - Send from a recognizable brand or person to build trust. ## Compliance Requirements - Ensure the subject line accurately reflects the email. - Clearly identify the sender. - Include a valid physical mailing address. - Provide an easy-to-use unsubscribe link and honor requests promptly. - Account for regional requirements such as CAN-SPAM, GDPR, and CASL. ## Timing and Measurement - Midweek mornings often perform well, but the best timing varies by audience and industry. - Test different days and times with smaller groups before sending to the full list. - Track click-through rate and conversion rate to evaluate performance. - Treat open rate cautiously because privacy features such as Apple Mail Privacy Protection can make it unreliable. - Use results to refine subject lines, send times, and calls to action. ## When to Use an Email Blast - Use blasts for messages relevant to a broad audience, including: - Time-sensitive promotions - Product launches - Company-wide announcements - Avoid relying on blasts when subscribers need individualized communication, such as onboarding or re-engagement. A successful email blast combines a clean, permission-based list with concise benefit-driven copy, one clear CTA, compliance, and ongoing testing. For more personalized needs, use segmentation or a behavior-based email campaign instead.

conversion-rate-optimizationgdpremail-marketingemail-blast+4

tossFeb 27, 2026

From Intern to Solo Designer: Growth (opens in new tab)

As a Toss Bank product design intern, Jeon Nuri designed experiments to improve non-member sign-up conversion. She prioritized the funnel using speed and impact, studied previous experiments, and learned that clear, narrowly defined hypotheses were more valuable than constantly generating new ideas. The experience showed that failed experiments can still guide better decisions when they produce actionable learning. ## Prioritizing the Right Funnel Stage - The largest drop-offs occurred in the intro, consent, and identity-verification screens. - Consent and identity verification were shared modules requiring legal and compliance review, making rapid iteration difficult. - The intro screen could be changed more quickly and had the potential to affect the greatest number of users. - Based on this speed-versus-impact assessment, she chose the intro screen as the starting point. ## Learning from Previous Experiments - Instead of immediately designing new concepts, she reviewed existing experiments, including both winners and unsuccessful variations. - She examined: - The problem each experiment addressed - The reasoning behind its hypothesis - How the test variation was designed - Experiments from unrelated screens were also useful because their problem definitions and hypothesis structures could be adapted. - The main lesson was that inexperienced experimenters benefit more from systematically analyzing existing learning than from rushing to create new ideas. ## First Experiment: A Counselor Concept - The first variation presented benefits as if they were being recommended by a counselor and offered a small number of choices. - The hypothesis was vague: fewer choices would increase conversion. - The result was negative: - Click-through rate fell by more than 10%. - Conversion rate fell by more than 3%. - The design actually introduced more choices than the original, which had only one CTA button. - The experiment also failed to consider why users had entered the screen and whether they needed recommendations. - This led her to analyze the existing screen and user context before creating a hypothesis. ## Identifying and Solving Concrete Problems - Rather than inventing an entirely new design, she identified two specific weaknesses in the existing version: - The copy did not clearly communicate benefits users cared about. - Images loaded slowly, taking two to three seconds on low-end devices. - Previous experiments showed that users responded well to messages about high interest rates and receiving interest daily. - She incorporated those themes into the copy and optimized the visuals with newer graphics and lower-weight image formats. - Both click-through rate and conversion rate increased, demonstrating that a hypothesis grounded in clear problems can provide a stable direction for design. ## Making Benefits Easier to Imagine - Building on the earlier results, she changed functional wording into language that helped users imagine a concrete situation and immediate benefit. - Instead of simply explaining that interest could be earned after depositing money for one day, the revised copy foregrounded the moment when users would experience the benefit. - Copy alone increased CTR by 5% and also produced a meaningful improvement in CVR. - The result reinforced that different expressions of the same information can create significantly different first impressions. ## Principles for Designing Experiments - Break the funnel into stages and prioritize opportunities by speed and potential impact. - Understand the existing context before defining the core problem. - Study previous experiments through their hypotheses and problem definitions, not just their numerical outcomes. - Establish a clear hypothesis and success metric before designing the variation. - Make sure the experiment visibly tests the stated hypothesis. - Treat failure as input for the next decision rather than as wasted effort. A practical starting point for new designers is to begin with a small, focused experiment—but make the hypothesis precise enough to guide both the design and the next iteration.

conversion-rate-optimizationproduct-designa-b-testingdata-driven-design+3

tossJan 29, 2026

6 Principles to Increase Marketing (opens in new tab)

Toss, a leader in the Korean fintech space, demonstrates that high marketing performance can be achieved without resorting to aggressive or deceptive copy. By analyzing hundreds of A/B tests within their app, they have identified specific UX writing patterns that prioritize user trust while significantly boosting engagement. The core conclusion is that clarity, psychological ease, and guaranteed rewards consistently outperform complex value propositions and exaggerated claims. ### The Power of One Core Message * Focusing on a single, immediate action is more effective than listing multiple service benefits. * In one test, replacing a complex benefit-driven headline with a simple "Take a 10-question test" resulted in a 10x increase in click-through rates (CTR). * Complexity creates friction; users are more likely to engage when they understand exactly what the next step entails without distractions. ### Prioritizing Guaranteed Rewards * Users show a stronger preference for "guaranteed small wins" over "potential big wins." * A campaign promising a "Minimum 100 won" reward saw 20x more exposure than one promising "Up to 1 million won," as large numbers can trigger skepticism or feel unattainable. * Phrases like "You will definitely get 1" outperform "Get as many as you want" because they provide a concrete promise rather than a vague possibility. ### Reducing Cognitive Load Through "Light" Language * The choice of verbs significantly impacts the perceived effort of a task. * Using "Prepare for travel insurance" instead of "Sign up for travel insurance" reduces the psychological burden, as "sign up" implies a long, bureaucratic process. * "Light" verbs make the service feel faster and easier to complete, encouraging immediate action. ### Strategic Information Framing * Clearly defining the nature of information—whether it is a "collection," a "list," or "new"—helps users categorize the value quickly. * Highlighting that a feature is "new" rather than explaining the specific benefits of the feature increased CTR by 6x. * Using terms like "View collection" for loan products provides a sense of organized efficiency that appeals to users looking for consolidated information. ### Specificity in Action and Conditions * Ambiguity leads to hesitation; providing exact numbers (e.g., "4 missions" or "8 blanks") increases conversion rates. * Specifying the number of tasks makes a goal feel attainable and removes the fear of an open-ended time commitment. * Quantifying the effort required (e.g., "takes 3 minutes") allows users to make an instant, friction-less decision to participate. ### Utilizing Intuitive, Everyday Experiences * Copy that mirrors real-life physical actions is more intuitive for users. * Changing a button from "View answer" to "Pick an answer" (accompanied by a stamp emoji) for an OX quiz significantly increased engagement by making the digital action feel more tactile and familiar. * Leveraging common vocabulary ensures that users do not have to "translate" marketing speak into practical reality. To maximize conversion, designers and writers should move away from broad marketing claims and toward radical specificity. By removing ambiguity and promising certain, low-effort outcomes, you can build a more effective and honest user experience.

conversion-rate-optimizationux-designab-testingux-writing+3