Slashy

AI-Native 邮件客户端,通过持续学习的记忆系统模仿用户写作风格自动起草回复、智能分拣收件箱并追踪跟进事项

In-depth Report

  • Slashy is an AI-Native email and calendar client that uses a continuous learning memory system to automatically draft replies, intelligently sort inboxes, and track follow-up items by imitating the user's writing style. Officials claim that the AI ​​draft acceptance rate has increased from about 30% on the first day to more than 80% after 30 days of use. Its core competitiveness lies in the "learning loop" rather than the "assisted generation" of traditional email clients. The product is aimed at heavy users such as founders, investors, and sales teams who deal with a large number of high-priority emails every day. It is priced at $25/user/month (paid annually).

  • Slashy is developed by a Y Combinator-incubated startup company headquartered in San Francisco (Emeryville), USA. The three co-founders are Harsha Gaddipati (CEO), Dhruv Roongta and Pranjali Awasthi, all from Georgia Tech background. The product was launched on Product Hunt on June 14, 2026, and is positioned as an “AI assistant that handles emails for you.” The product has been based on AI as its core architecture since the first commit, rather than superimposing AI functions on traditional email clients. The product has been recommended by several investors and founders on LinkedIn. Redpoint investor Priscilla Russo said, "Founders always remember who responded to them first, and now I'm that person." Several technology leaders and founders also endorsed Slashy on LinkedIn, calling it "the first email client that feels like AI-native rather than AI-bolted-on."

  • Slashy's functional system revolves around "smart inbox". The core functions include: AI draft reply: The system learns the writing style, tone, recipient relationship, and reply timing based on the user's history of sending emails. It generates a draft before opening the email, and the user can send it with one click. The official statement is that "instead of stuffing the last 5 sent emails into the prompt", it builds a structured memory model. Inline AI assistant: Select any text and let AI rewrite, shorten or adjust the tone without switching windows. Scheduling and Calendar Integration: The calendar sidebar is displayed side by side with the inbox, so you can view your schedule and free time when replying to emails without opening third-party tools such as Calendly. Unified inbox: Manage multiple Gmail accounts in the same view and switch between them with one click. Turn on tracking and follow-up reminders: it will be clear at a glance when the other party opened the email, on what device they read it, and how many times they read it. The follow-up reminder function will automatically track the emails that need to be responded to, and will proactively remind the user if the other party "disappears". Automatic labeling and sorting: Use AI to automatically label important emails, calendar notifications, bills, newsletters, etc., so your inbox is always clean and organized. iMessage/SMS integration: Draft replies, check your calendar, and track urgent emails all from within a text message—without opening the Inbox app. MCP integration: Support MCP clients such as Claude Code, Claude Desktop, Cursor, Codex CLI, etc. to connect to Slashy's inbox, and external AI assistants can perform operations based on the inbox context. Memory system: This is the core difference from competing products. The system will store the "memory" of learning - such as "investor updates sent every Monday", "contact roles", "signature style", etc., and users can view and delete them. This is a structured accumulation of patterns rather than a simple prompt of recent emails in context. Comparison with Superhuman: Superhuman wins in keyboard shortcut speed and maturity, but AI is a later addition; Slashy’s AI is the underlying architecture and has CRM integration, calendar context, and MCP support. Comparison with Shortwave: Shortwave is suitable for users who use Gmail intensively and has strong AI search capabilities; Slashy is more in-depth in cross-platform intelligence and memory accumulation.

  • Slashy uses a SaaS subscription model, divided into two levels: Professional: $25/user/month (pay $300/year), or $30/month paid monthly. Includes AI drafting, unlimited inbox, calendar, CRM integrations (HubSpot, Attio), automation features, onboarding specialist, team calendar. Enterprise: On-demand pricing (starting at 50 users), includes dedicated account manager, SSO/SCIM, custom security controls, priority support. Offers a 7-day free trial (credit card required). The price is basically the same as Superhuman (Superhuman Starter is also $30/month or $300/year), but Slashy includes CRM integration and calendar sidebar in the entry-level plan, while Superhuman’s Business plan ($396/year) only adds these features. The target users are founders, executives, investors, and sales teams—people in the workplace who receive a large volume of emails every day, require high quality responses, and require frequent follow-up.

  • Positive feedback focuses on several aspects: the AI ​​draft is of high quality, the tone is accurately grasped, and it saves a lot of time. Many founders said on LinkedIn that "the memory system is really useful" and "it really understands me"; some users mentioned that "iMessage integration is a killer feature and can handle urgent emails on the commute" and "tracking who has not responded to emails is simply a collection tool." Some users also mentioned that the price is on the high side and not cost-effective enough for ordinary email users. In addition, as a new product, some users reported that the AI ​​draft required more manual correction during the initial use, and it gradually became more accurate as the use time increased. Typical usage scenarios include: founders responding to investor emails, sales following up with customers, executives handling cross-department collaboration requests, and operations personnel who need to manage inboxes across multiple Google accounts.

  • Industry media and technology review sites generally rate Slashy as the best AI email client of 2026. ToolWorthy's review believes that it is "not only an AI writing tool, but also an intelligent agent that operates your inbox." The technical analysis of mer.vin details the technical implementation of its memory system and MCP integration, arguing that this is the biggest difference from traditional email clients. A review on the ProductHunt Chinese website (producthunt.com.cn) said that Slashy's "most eye-catching breakthrough is to open up the siled islands of email, calendar, CRM and meeting minutes, making the context truly coherent." In terms of competitive product landscape, Slashy’s main competitors include Superhuman (the most direct competitor, similar price range but with added AI), Shortwave (Gmail in-depth AI search, team collaboration), Fyxer (AI sorting overlay, non-complete client), Spark Mail (entry-level AI assistance, lower price) and Gmail + Gemini (zero switching cost, but limited feature depth). Slashy’s differentiation lies in its “AI-native architecture” and “cross-surface intelligence” rather than the depth of a single function.

  • As a cloud service that needs to read email content, privacy and security are the biggest concerns. Slashy holds SOC 2 Type II and CASA Tier 2 certifications, commits not to train its AI on customer email data, and the LLM provider is also bound by a zero-retention clause, AES-256 encryption at rest, and TLS 1.2+ encryption in transit. However, the product is not yet HIPAA compliant and is not suitable for regulated industries such as healthcare. Another limitation is that it currently only supports Gmail/Google Workspace (via OAuth), and Outlook support is marked "coming soon", which is an obvious shortcoming for Microsoft 365 users. As a new product that will only be officially launched in 2026, its brand awareness and user base are far inferior to competitors such as Superhuman that have been operating for many years. In addition, Slashy is an independent email client rather than a Gmail plug-in, and users need additional installation and learning costs.

  • Slashy is best suited for founders/CEOs who frequently handle investor emails and critical business communications, sales teams who need to frequently follow up with customers and rely on CRM context, operations staff who need to manage inboxes across multiple Google accounts, and users who already use Superhuman but want deeper AI automation. Not suitable for people: ordinary personal email users (the price is high), users who only use Outlook (not supported yet), regulated industries such as medical/finance (no HIPAA), users who only need a simple "write for me" function without a complete client. It is recommended that newcomers first use the 7-day free trial to test a key workflow (such as investor follow-up or customer email reply), observe the quality improvement curve of the AI ​​draft in the first week, and confirm that it is worth paying before using it for a long time.

  • Slashy is the product currently on the market that is closest to an "AI native email experience" - instead of attaching an AI label to a traditional email client, it is built from scratch around a learning cycle. Its memory system, cross-surface intelligence, and multi-channel integration (iMessage/Slack/MCP) really constitute a differentiator. For heavy users who spend hours a day on email, Slashy's value proposition is clear: invest in calibration for the first 30 days, and then get a digital alter ego that understands you better and better. However, privacy restrictions, platform support scope and the maturity of new products are its current major shortcomings.

User Reviews

  • 头像
    PLnie
    之前在 Superhuman 和 Slashy 之间纠结了很久,毕竟 Superhuman 的键盘快捷键是出了名的快。但 Slashy 的 AI-native 架构最终说服了我——它不只帮你打字更快,而是从根本上改变了你处理邮件的方式。以前我每天固定两个时间段处理邮件,现在随时打开收件箱都是整理好的状态。30 天的学习曲线是真的,但一旦度过那个阶段,你会发现自己回邮件的速度和信心都在提升,这体验是 Superhuman 给不了的。

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    Beverly.Walker
    用了一个月来写投资人周报和跟进邮件,效果超出预期。以前写周报要憋半天,现在 Slashy 根据我这周的邮件往来帮我生成草稿,改一改就能发。关键是它的语气真的很像我,投资人居然没发现我在用 AI 写邮件。

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    clWAG
    作为一个每天处理上百封邮件的创始人,Slashy 对我的工作流程改变是结构性的。以前每天早上要先花半小时扫一遍收件箱,给邮件分优先级,再逐一回复。现在打开电脑 AI 已经帮我分好类、起草好了大部分回复,我只需要Review和发送。前两周的校准期确实需要耐心,但过了那个坎之后,每天至少省出一个半小时,这还不算减少的精神消耗——不用再惦记着「我是不是漏回了谁」的那种焦虑感了。

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    秋叶504
    用了两周,AI 草稿的准确率确实在提升,刚开始改得比较多,现在基本一键发送了。记忆系统是真实存在的,它记住了我习惯用「Best」署名和周一发更新这两个小细节,感觉挺神奇的。

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    JennyWelch
    最惊艳的是 iMessage 集成,通勤路上直接在短信里回邮件,不用打开 app,效率翻倍。

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    SLopezQ
    价格确实不便宜,年付三百刀够买个不错的软件全家桶了。但对于每天处理一百多封邮件的人来说,省下来的时间绝对值这个价。

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    Thomas.HallJr
    我们销售团队四个人一起用了两个月,最值的是 CRM 集成。之前每次打完电话要手动在 HubSpot 里更新记录、写跟进邮件、设置提醒,一套流程走下来至少十五分钟。现在 Slashy 自动抓取通话笔记,生成跟进草稿,还提醒我们谁该跟进了。团队整体的响应时间从平均 4 小时降到了 1.5 小时,客户满意度有明显提升。不过部署初期确实需要花时间训练每个人的语气模型。

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    丁贞
    追踪谁看了邮件没回的功能简直是催款神器,这周追回了三笔客户欠款,回本了。

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    iJoshuaSingh_dev
    我把 Slashy 推荐给了我们团队六个人,大家的反馈很一致——前三天觉得一般,一周后开始真香。有个同事从不用 AI 工具到现在离不开了。不过也有个问题,团队版的管理后台功能还不够完善,希望尽快迭代。

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    Robert_ThomasIII1
    创始团队动作快得离谱,几乎每周都在发新功能,Product Hunt 上线那周一天发好几个视频。社区氛围也热情,有问题直接找创始人聊。

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    Megan_Martin_Max
    隐私问题我还是有点顾虑,把所有邮件授权给第三方终究不放心。虽然 SOC 2 认证和零数据保留条款写得清楚,但心理上需要时间适应。

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    海角84
    从 Superhuman 转过来的,最喜欢的是日历侧边栏。以前约时间要切到日历看日程再切回来回邮件,现在一边写一边就能看到空闲时间,很顺畅。

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    greenswan488
    唯一不爽的是只支持 Gmail,我公司的 Outlook 用不了,只能先用个人账号体验。等 Outlook 支持出来再说吧。

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    bntr03mwp2
    会议准备功能绝了,开会前自动总结最近和对方的邮件往来,还带上要讨论的要点,直接省掉了翻邮件的十分钟。

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    Carl.Morales_88640
    说实话前三天我差点放弃,草稿写得一般,校准还得花不少时间。但坚持了一周后变化明显,现在每天至少省一小时。

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    fROGfINANCEcARTER
    MCP 集成是个隐藏大杀器,我用 Claude Code 连上 Slashy 的收件箱让它帮我处理邮件,这组合基本等于有了个 AI 助理。

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    BruceBarnesII
    说几个小槽点吧。第一,它对中文的支持还有提升空间,写英文邮件很流畅但写中文时偶尔会有奇怪的断句。第二,目前只支持 Gmail,出差时用公司电脑的 Outlook 就很尴尬。第三,免费试用只有 7 天,对于这种需要时间学习的工具来说太短了,建议至少给 14 天。但抛开这些,产品力本身是够硬的。

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    阎建
    太贵了。个人用户真的用不起,一个月三十刀我宁愿雇个兼职助理。可能更适合创始人和销售。

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    Rebecca.Reed
    回不去了,用过 AI-native 的邮件客户端后再也不想碰原版 Gmail。那个自动分拣功能把我几千封未读整理得清爽多了。

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    LCooper369
    试了七天免费试用后决定付费。最打动我的不是 AI 草稿,而是那个自动跟进提醒功能。我做商务拓展的,经常同时跟进十几个潜在客户,哪个邮件回了哪个没回全靠脑子记,漏过好几次重要机会。Slashy 的「谁欠我回复」面板彻底解决了这个问题,哪个客户三天没回会自动弹出来提醒我换个方式跟进,上周刚用这个功能签了个等了两个月的单子。

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    OSwol
    让第三方访问整个收件箱始终有点顾虑,虽然有 SOC 2 认证和零数据保留条款,但我还是先用小号试了试,确定没问题才切主号。

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    PatrickGarcia369
    Concerned about giving third-party access to my entire inbox. 虽然有认证但我还是先用小号试。

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    Sophia.Cox_202203
    看了一下对比评测,这个价位段居然把 HubSpot 集成都放进入门方案了,竞争对手同价位连日历都没有,这一点确实良心。

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    Nash507
    关注这个团队很久了,创始人才 18 岁就融了 YC,执行力确实猛。希望产品能一直保持这个更新节奏。

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    JSmith
    关注这个产品有一段时间了,从早期的 Dash 到现在以邮件为核心的 Slashy,产品方向在不断迭代。创始团队的执行力确实很强,但作为一个谨慎的技术决策者,我更关心的是数据安全和长期可持续性。把公司邮件全量授权给一个小团队的初创产品,这个风险需要认真评估。建议团队尽快发布 SOC 2 报告和更详细的数据处理白皮书,这对企业客户来说至关重要。

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    金敏
    用了一周把收件箱从两千多封清理到零了,这个自动标签和归档实在太强。以前看到收件箱就焦虑,现在好多了。

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    a1185u4
    小团队用的话性价比还可以,我们四个人拼了个年付方案,人均下来不算贵。关键是不用自己搭自动化流程了,普通话说就能跑。

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    姜梅
    Product Hunt 上看到的,试了一下就被圈粉了。回复邮件的语气真的很像自己写的,不像别的 AI 那种官方腔。

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    chJEN
    提醒功能太顶了,设了跟进提醒后再也没漏过客户邮件。而且如果对方打开了邮件没回,它会主动提醒我,这个很细节。

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    冬雪_7
    好担心大厂哪天直接把工作流能力做成内置功能,这种中间层会不会被平台化掉。但还是希望 Slashy 能跑出来。