# 25Genius vs Smart Assistant by Mailbutler

25Genius records 0 monthly visits with — month-over-month growth and Freemium pricing. Smart Assistant by Mailbutler records 47,200 monthly visits with -8.7% growth and Freemium, Free Trial, Paid pricing.

| Metric | [25Genius](https://openaitools.app/tool/25genius) | [Smart Assistant by Mailbutler](https://openaitools.app/tool/smart-assistant) |
| :--- | :--- | :--- |
| Website URL | https://chromewebstore.google.com/detail/25genius/chlfflpmkjlfoloddphnmnipmkpcjnle | https://mailbutler.io |
| Categories | AI Email Assistant, AI Email Generator, AI Reply, AI Productivity Tools | AI Email Assistant, AI Email Generator, AI Response Generator, AI Summarizer |
| Pricing Model | Freemium | Freemium, Free Trial, Paid |
| Monthly Visits | 0 | 47,200 |
| MoM Growth Rate | — | -8.7% |
| Primary Market | Global | United States |
| Direct Visits | 0 | 18,322 |
| Review Score | 3.2 | 4.5 |
| Saved Count | 0 | 6 |
| Supported Platforms | Browser Extension | Website |

## 25Genius

25Genius sits in a simple, familiar category: browser extensions that remove the friction of replying to email. It installs as a Chrome extension and works inside Gmail, letting you draft a reply in roughly one click instead of typing from a blank box. The suggested text is generated with ChatGPT from OpenAI and then dropped into your compose window for review.

What separates it from a generic 'write my email' prompt is context. According to its listing, 25Genius looks at your previous communication history and the content of the message you are answering, then proposes a response tuned to that exchange. You stay in control: every suggestion is editable, so you can adjust wording, tone or length before sending.

The intended users are busy professionals handling high volumes of routine mail — customer inquiries, scheduling confirmations, short follow-ups — where the reply is predictable and the time cost is pure overhead. It is a lightweight utility rather than a full mailbox manager: it does not aim to triage, unsubscribe or reorganize your inbox. Worth noting is that the listing is dated April 2023 and shows very few users, so treat it as a small, independent project rather than a heavily maintained product; you supply your own OpenAI API key and pay OpenAI for usage.

**Pricing & Plans:** Freemium

- **One-click reply drafting:** Generate a suggested reply in Gmail without writing from scratch, so short routine messages take seconds instead of minutes.
- **Context-aware suggestions:** Suggestions are based on your previous communication history and the context of the incoming message rather than a generic template.
- **Fully editable drafts:** Every suggested reply can be freely edited before sending, keeping your own phrasing, tone and sign-off intact.
- **Built for busy inboxes:** Supports repetitive inbox workloads such as customer inquiries and routine correspondence where responses follow familiar patterns.

**Strengths:** Removes the blank-page problem for routine email replies; Context-aware suggestions based on past messages and the current thread; Drafts stay fully editable so your voice is preserved; Lightweight Chrome extension with no separate inbox to manage

**Limitations:** Listing has not been updated since April 2023, so it may lag behind current Gmail and ChatGPT changes; Very low adoption (roughly 7 users) with no ratings, so reliability is largely unproven; Requires an OpenAI API key and usage is billed by OpenAI, adding cost and setup; Limited to Gmail in the browser and to English-language listings

[Profile (Markdown)](https://openaitools.app/tool/25genius.md)

## Smart Assistant by Mailbutler

Mailbutler is an email productivity extension for Apple Mail, Gmail, and Outlook, and its AI component is the Smart Assistant. Rather than being a standalone chatbot, the assistant is embedded in the compose and read views of the inbox you already use. It can compose an email from a few short keywords, draft a reply framed as positive, negative, or neutral, summarize an entire thread, or correct grammar and phrasing in a draft — all without switching apps or copying text elsewhere.

The AI layer is deliberately connected to the rest of Mailbutler's toolkit. Follow-up suggestions analyze tracked emails — opens, link clicks, and engagement patterns — then classify threads as high, medium, or low priority, and the Smart Assistant can draft the follow-up itself. That combination of tracking data plus generation is what makes the assistant useful in sales and client-facing work, where knowing who to chase matters as much as what to write.

The rest of the extension supplies email tracking, message templates, mail merge, smart timing, tasks and notes, shared inbox assignments, and signature marketing. On privacy, Mailbutler is ISO/IEC 27001 certified and GDPR compliant with servers in Frankfurt, Germany. Emails are still sent from your own server, message content is not analyzed or stored in the backend for general operation, and when you use the Smart Assistant the email body is sent to OpenAI only for that request, with email addresses replaced by dummy variables. Plans range from a free-forever Starter tier to paid Smart and Business plans, all starting with a free 14-day trial that includes every feature and no credit card requirement.

**Pricing & Plans:** There is a free-forever Starter plan plus a free 14-day trial with all features and no credit card. Paid tiers are billed per user per month (about $4 Starter, $7 Professional, $11 Smart, and higher Business pricing when billed yearly, with monthly pricing slightly higher) and available in USD or EUR. The AI Smart Assistant is included from the Smart plan upward; email tracking, templates, mail merge, tasks, and signatures are spread across the tiers.

- **AI drafting and reply generation:** Turn a handful of keywords or bullet points into a full, sendable email, and generate replies framed as positive, negative, or neutral depending on the situation.
- **Thread summarization:** Condense long email chains into the key points so you can catch up fast and respond without re-reading every message.
- **Grammar and tone correction:** The assistant rewrites and corrects your message for grammar, spelling, and phrasing before you hit send.
- **Smart Follow-ups:** Follow-up suggestions combined with open and click tracking tell you which threads are urgent, and the assistant can draft the follow-up for you.
- **Built into a full email toolkit:** The AI features sit alongside tracking, message templates, mail merge, tasks and notes, shared inbox assignments, and email signatures so your whole workflow stays in one inbox.

**Strengths:** Works inside Apple Mail, Gmail, and Outlook instead of forcing another app into your stack; AI drafting, summarization, and grammar checks are combined with tracking and follow-up prioritization in one place; Strong privacy posture: ISO/IEC 27001 certified, GDPR compliant, and servers located in Germany; Free 14-day trial unlocks all features with no credit card required

**Limitations:** Most genuinely useful AI features require a paid plan, and full automation sits on higher tiers; Free tier is limited, so the free-forever Starter plan is best treated as a lite entry point; Used for email drafting, email body text is transmitted to OpenAI (addresses are tokenized), which some compliance teams will want to review; Feature depth varies slightly by client since it is an extension layered over three different email apps

[Profile (Markdown)](https://openaitools.app/tool/smart-assistant.md)

## Frequently Asked Questions

### How do 25Genius and Smart Assistant by Mailbutler compare in monthly traffic?

25Genius has 0 monthly visits, while Smart Assistant by Mailbutler has 47,200. Traffic estimates describe audience size, not product quality.

### How do their growth rates compare?

25Genius has a month-over-month growth rate of —; Smart Assistant by Mailbutler has -8.7%.

### How does pricing compare?

25Genius: Freemium. Freemium Smart Assistant by Mailbutler: Freemium, Free Trial, Paid. There is a free-forever Starter plan plus a free 14-day trial with all features and no credit card. Paid tiers are billed per user per month (about $4 Starter, $7 Professional, $11 Smart, and higher Business pricing when billed yearly, with monthly pricing slightly higher) and available in USD or EUR. The AI Smart Assistant is included from the Smart plan upward; email tracking, templates, mail merge, tasks, and signatures are spread across the tiers.

## Alternatives

| # | Tool Name | Monthly Visits | MoM Growth Rate | Pricing Model | Summary | Profile (Markdown) |
| :--- | :--- | :--- | :--- | :--- | :--- | :--- |
| 1 | [Grammarly](https://openaitools.app/tool/grammarly) | 58,867,412 | -1.5% | Freemium | Cross-platform AI writing assistant delivering real-time grammar correction, tone alignment, authorship tracking, and team style guides. | [.md](https://openaitools.app/tool/grammarly.md) |
| 2 | [Superhuman](https://openaitools.app/tool/superhuman) | 6,514,241 | +7.9% | Paid | The AI productivity suite with agents, email, and docs that work wherever you do | [.md](https://openaitools.app/tool/superhuman.md) |
| 3 | [Spark Mail](https://openaitools.app/tool/spark-mail) | 435,229 | -13.5% | Freemium, Free Trial | Smart, focused email with AI help — for individuals and teams | [.md](https://openaitools.app/tool/spark-mail.md) |
| 4 | [BlueMail](https://openaitools.app/tool/bluemail) | 319,805 | -5.8% | Free | A privacy-first email client with built-in AI writing help | [.md](https://openaitools.app/tool/bluemail.md) |
| 5 | [WriteMail.ai](https://openaitools.app/tool/writemail-ai) | 79,919 | -29.9% | Freemium | Turn a few key points into polished, on-tone emails | [.md](https://openaitools.app/tool/writemail-ai.md) |
| 6 | [ParagraphAI](https://openaitools.app/tool/paragraphai) | 23,267 | -34.6% | Freemium | An AI writing assistant and keyboard for error-free writing anywhere | [.md](https://openaitools.app/tool/paragraphai.md) |
| 7 | [AImReply – Free AI Email Writer](https://openaitools.app/tool/ai-email-assistant-aimreply) | 17,618 | +6.9% | Free | Write polished, on-tone emails in seconds — free, right in your browser | [.md](https://openaitools.app/tool/ai-email-assistant-aimreply.md) |
| 8 | [ForthWrite](https://openaitools.app/tool/forthwrite) | 5,722 | +4.6% | Freemium, Free Trial, Contact for Pricing | AI email drafting that writes in your own voice, inside Gmail and Outlook | [.md](https://openaitools.app/tool/forthwrite.md) |
| 9 | [Auto Gmail: ChatGPT for email](https://openaitools.app/tool/auto-gmail-chatgpt-for-email) | 4,887 | +14.9% | Paid | An AI drafting layer that writes most of your Gmail replies before you open them. | [.md](https://openaitools.app/tool/auto-gmail-chatgpt-for-email.md) |
| 10 | [ChatGPT Add-in for Outlook](https://openaitools.app/tool/chatgpt-add-in-for-outlook) | 1,714 | -18.4% | Free add-in, paid custom builds | Run ChatGPT prompts on your Outlook inbox — summarise, highlight and triage email | [.md](https://openaitools.app/tool/chatgpt-add-in-for-outlook.md) |

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Source: https://openaitools.app/compare/25genius-vs-smart-assistant

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