# Smart Assistant by Mailbutler vs Speechify

Smart Assistant by Mailbutler records 47,200 monthly visits with -8.7% month-over-month growth and Freemium, Free Trial, Paid pricing. Speechify records 5,457,475 monthly visits with +0.5% growth and Freemium pricing.

| Metric | [Smart Assistant by Mailbutler](https://openaitools.app/tool/smart-assistant) | [Speechify](https://openaitools.app/tool/speechify) |
| :--- | :--- | :--- |
| Website URL | https://mailbutler.io | https://speechify.com |
| Categories | AI Email Assistant, AI Email Generator, AI Response Generator, AI Summarizer | AI Text-to-Speech, AI Voice Over, AI Voice Cloning, AI Dubbing |
| Pricing Model | Freemium, Free Trial, Paid | Freemium |
| Monthly Visits | 47,200 | 5,457,475 |
| MoM Growth Rate | -8.7% | +0.5% |
| Primary Market | United States | United States |
| Direct Visits | 18,322 | 2,844,719 |
| Review Score | 4.5 | 4.3 |
| Saved Count | 6 | 30 |
| Supported Platforms | Website | Website |

## 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)

## Speechify

Speechify is a voice AI assistant built around listening, reading and writing with your voice. Upload a PDF, open a web page or import a book, and Speechify reads it aloud in natural-sounding AI voices while highlighting the text and letting you adjust speed up to several times normal. It also generates AI podcasts and pastes answers into a voice-first workspace.

Its voice typing feature turns speech into polished text across almost any app, so you can dictate in Google Docs, Gmail, Slack, Outlook and more instead of typing. The platform spans a web app plus Chrome and Edge extensions, and native iOS, Android, Mac and Windows apps, with an AI voice generator, Voice Over, Dubbing Studio and Voices Studio for creators.

Speechify is used by tens of millions of people, including students, professionals, creators and readers with dyslexia or other accessibility needs, and won a 2025 Apple Design Award. It offers free access with paid Pro and enterprise tiers, and integrates as a voice AI layer across your devices.

**Pricing & Plans:** Freemium with a free plan for basic text to speech, plus paid Pro tiers for premium voices, unlimited listening and advanced features. Enterprise and education plans are also available.

- **Natural text to speech:** Listen to books, PDFs, documents and web pages read aloud in a large library of lifelike AI voices.
- **Voice typing and dictation:** Dictate instead of typing in almost any app, across Google Docs, Gmail, Slack, Outlook and more.
- **AI podcasts and summaries:** Turn documents or a short prompt into an AI podcast, and get instant summaries of what you are reading.
- **Every device and browser:** Use the web app, Chrome and Edge extensions, and native iOS, Android, Mac and Windows apps.
- **AI voice generator and dubbing:** Create voiceovers, dub content and explore voice cloning tools for creators and studios.

**Strengths:** Reads almost any content type across a very wide range of apps and devices; High-quality, natural AI voices and flexible listening speed; Strong accessibility benefits and a genuinely useful voice typing feature

**Limitations:** Premium voices and unlimited listening require a paid plan; Very feature-rich, so new users may need time to find what they need

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

## Frequently Asked Questions

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

Smart Assistant by Mailbutler has 47,200 monthly visits, while Speechify has 5,457,475. Traffic estimates describe audience size, not product quality.

### How do their growth rates compare?

Smart Assistant by Mailbutler has a month-over-month growth rate of -8.7%; Speechify has +0.5%.

### How does pricing compare?

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. Speechify: Freemium. Freemium with a free plan for basic text to speech, plus paid Pro tiers for premium voices, unlimited listening and advanced features. Enterprise and education plans are also available.

## 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 | [ElevenLabs](https://openaitools.app/tool/elevenlabs-io) | 42,396,771 | +26.1% | Freemium, Paid, Contact for Pricing | Delivers significantly superior voice realism and cloning quality, but lacks Speechify's dedicated document library reader interface. | [.md](https://openaitools.app/tool/elevenlabs-io.md) |
| 3 | [Fish Audio](https://openaitools.app/tool/fish-speech) | 8,557,159 | +1.6% | Freemium | Provides powerful open-source speech synthesis and voice cloning, but requires technical setup compared to turnkey apps. | [.md](https://openaitools.app/tool/fish-speech.md) |
| 4 | [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) |
| 5 | [NaturalReader](https://openaitools.app/tool/naturalreaders) | 3,249,984 | -3.2% | Freemium | Offers a very similar document-reading experience and browser extension for listening to PDFs, but with fewer advanced voice cloning suites. | [.md](https://openaitools.app/tool/naturalreaders.md) |
| 6 | [TTSMaker](https://openaitools.app/tool/ttsmaker) | 1,158,846 | +6.8% | Freemium | Provides free text-to-speech conversion across many languages, but lacks advanced reading assistant and document management features. | [.md](https://openaitools.app/tool/ttsmaker.md) |
| 7 | [Voice AI](https://openaitools.app/tool/voice-ai) | 1,017,577 | -14.9% | Freemium | Specializes in real-time voice changing and cloning, but lacks Speechify's robust ebook and document reading workflow. | [.md](https://openaitools.app/tool/voice-ai.md) |
| 8 | [AnyToSpeech](https://openaitools.app/tool/anytospeech) | 988,327 | +28% | Freemium | Converts text, documents, and web pages into natural audio via browser tools, but lacks Speechify's polished mobile apps. | [.md](https://openaitools.app/tool/anytospeech.md) |
| 9 | [SpeechGen.io](https://openaitools.app/tool/speechgen-io) | 767,550 | +2.3% | Freemium, Paid | Generates realistic voiceovers from text scripts, but lacks dedicated e-reader and document library apps. | [.md](https://openaitools.app/tool/speechgen-io.md) |
| 10 | [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) |

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

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