# CastReader vs Mail Reader for Gmail

CastReader records 55,999 monthly visits with +9.8% month-over-month growth and Freemium pricing. Mail Reader for Gmail records 0 monthly visits with — growth and Free pricing.

| Metric | [CastReader](https://openaitools.app/tool/castreader) | [Mail Reader for Gmail](https://openaitools.app/tool/mail-reader-for-gmail) |
| :--- | :--- | :--- |
| Website URL | https://castreader.com | https://chromewebstore.google.com/detail/mail-reader-for-gmail/mfccimpbffmkbjomapbcgfibfokinkpp |
| Categories | AI Text-to-Speech, AI Speech Synthesis, AI Reader | AI Email Assistant, AI Text-to-Speech, AI Speech-to-Text |
| Pricing Model | Freemium | Free |
| Monthly Visits | 55,999 | 0 |
| MoM Growth Rate | +9.8% | — |
| Primary Market | United States | Global |
| Direct Visits | 19,699 | 0 |
| Review Score | 4.4 | 3.6 |
| Saved Count | 0 | 0 |
| Supported Platforms | Website | Browser Extension |

## CastReader

CastReader is built for people who want to consume long-form text with their ears as well as their eyes. Once installed as a Chrome or Edge extension, or opened as an iPhone, iPad or Android app, it reads supported pages and documents aloud using natural AI voices while a word-synced highlight and auto-scroll keep your place. A public Voice Hub lets you preview real voice samples by language before committing, and playback speed ranges from standard rates up to 3x on the paid plan.

What separates it from a plain screen reader is a feature called Read & Explain. Instead of only pronouncing a dense or foreign-language paragraph, CastReader works out what it means and walks you through it in the language you know best, while an animated pen circles and underlines the relevant lines in the original text. That mix of eyes-on-page and ears-on-explanation is aimed at research papers, technical documentation, foreign-language news and other long reads where passive narration is not enough.

Sources are organised into four families: book platforms such as Kindle, WeRead, Google Play Books, Libby, Kobo and O'Reilly; articles and subscriptions including Medium, Substack, The Atlantic, The New Yorker and major newspapers; work documents and email such as Google Docs, Notion, Gmail and Google Drive; and AI conversations from ChatGPT, Claude, Gemini, DeepSeek and Kimi. CastReader also offers private voice cloning for your own documents and a developer Voice API for embedding cloned speech into applications. Free use needs no account, and payments are handled by Stripe.

**Pricing & Plans:** Freemium. Free plan: $0 forever with 20 minutes of listening per day, standard voices up to 1.25x speed, 3 AI explains per day, and 30,000 translation characters per day when signed in. Pro: $4.99/month or $35.99/year (about $3/month, 40% saving) removing the daily listening cap, unlocking full ebooks and long PDFs, more premium voices up to 3x speed, unlimited daily explains, 120 personal-voice minutes per membership month, and 3,000,000 translation characters per month. A 3-day free trial is available; billing is via Stripe.

- **Synced read-aloud:** Natural AI voices narrate webpages, PDFs, ebooks and documents while each spoken word is highlighted and the page auto-scrolls, so you never lose your place.
- **Read & Explain:** Instead of only reading a hard passage, CastReader summarises and unpacks its meaning in the language you know best, with an animated pen marking the key lines in the original text.
- **Wide source coverage:** Works across Kindle, WeRead, Google Play Books, O'Reilly and other book platforms, news and newsletter sites, Google Docs, Notion, Gmail, plus ChatGPT, Claude, Gemini, DeepSeek and Kimi answers.
- **Voice Hub and voice cloning:** Preview real samples of dozens of voices across many languages, and create private cloned voices that Pro members can apply to their own PDF, EPUB, Word and TXT files.
- **Developer Voice API:** A REST API for text-to-speech and private voice cloning in 10 languages, returning MP3 or WAV, priced at $8 per 1M characters for successful generations.

**Strengths:** Combines plain read-aloud with guided explanations that point back at the source text; Covers an unusually broad set of sources, from Kindle and Gmail to ChatGPT and Claude answers; Free tier is genuinely usable with no account required, and the 3-day Pro trial needs no commitment; Personal voice cloning and a pay-per-success Voice API extend it beyond a simple reader

**Limitations:** The 20-minute daily listening cap on the free plan runs out quickly for long books or PDFs; Source support and iOS previews vary by platform, browser version and content access rules; Applying a cloned voice to your own text is limited to 120 minutes per membership month even on Pro

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

## Mail Reader for Gmail

Mail Reader for Gmail sits directly inside Gmail and adds two voice-first features. The dictation feature converts your speech into text inside a new message, which is useful when you would rather talk than type. The reading feature uses text-to-speech to play emails out loud, either by selecting text and choosing "Read selected" from the right-click menu, or by clicking the speaker icon that appears next to each message.

Control is handled from a compact pop-up styled like a subtitle reader. From there you can adjust the narrator's volume and switch between a male or female voice to match your preference. The extension is intentionally small and focused, so it loads quickly and does not interfere with the normal Gmail interface.

Because it supports voice input and spoken output, it is especially helpful for people with visual or motor accessibility needs, for users who prefer listening while multitasking, and for anyone who wants to speed through a busy inbox. It is offered by a third-party developer and is not an official Google product.

**Pricing & Plans:** Free. The extension installs at no cost through the Chrome Web Store, with no subscription or in-app purchases required.

- **Voice dictation:** Enable dictation in the pop-up, open a new message, and speak your reply — your words are converted to text directly in the email.
- **Text-to-speech reading:** Play any email aloud with a narrator's voice by right-clicking selected text or clicking the speaker icon next to a message.
- **Voice and volume controls:** Choose between a male or female narrator and fine-tune the volume from an easy pop-up menu.
- **Native Gmail integration:** Reading buttons are placed next to archive controls in the header and inbox list, so you can listen without leaving your workflow.
- **Accessibility focused:** Voice input and spoken output make email easier to use for people who rely on assistive reading or hands-free control.

**Strengths:** Adds both dictation and text-to-speech to Gmail in one small extension; Simple pop-up with adjustable volume and male/female voice choice; Reading buttons integrate naturally with the Gmail interface; Free to install, no additional cost

**Limitations:** No ratings yet on the store listing, so long-term reliability is not widely validated; Requires microphone access to use dictation; Not an official Google or Gmail product

[Profile (Markdown)](https://openaitools.app/tool/mail-reader-for-gmail.md)

## Frequently Asked Questions

### How do CastReader and Mail Reader for Gmail compare in monthly traffic?

CastReader has 55,999 monthly visits, while Mail Reader for Gmail has 0. Traffic estimates describe audience size, not product quality.

### How do their growth rates compare?

CastReader has a month-over-month growth rate of +9.8%; Mail Reader for Gmail has —.

### How does pricing compare?

CastReader: Freemium. Freemium. Free plan: $0 forever with 20 minutes of listening per day, standard voices up to 1.25x speed, 3 AI explains per day, and 30,000 translation characters per day when signed in. Pro: $4.99/month or $35.99/year (about $3/month, 40% saving) removing the daily listening cap, unlocking full ebooks and long PDFs, more premium voices up to 3x speed, unlimited daily explains, 120 personal-voice minutes per membership month, and 3,000,000 translation characters per month. A 3-day free trial is available; billing is via Stripe. Mail Reader for Gmail: Free. Free. The extension installs at no cost through the Chrome Web Store, with no subscription or in-app purchases required.

## Alternatives

| # | Tool Name | Monthly Visits | MoM Growth Rate | Pricing Model | Summary | Profile (Markdown) |
| :--- | :--- | :--- | :--- | :--- | :--- | :--- |
| 1 | [Speechify](https://openaitools.app/tool/speechify) | 5,457,475 | +0.5% | Freemium | Text to speech and voice AI across every device | [.md](https://openaitools.app/tool/speechify.md) |
| 2 | [Luvvoice](https://openaitools.app/tool/luvvoice-free-text-to-speech) | 1,438,923 | -8.2% | Freemium | Free AI text to speech with 200+ voices in 70+ languages | [.md](https://openaitools.app/tool/luvvoice-free-text-to-speech.md) |
| 3 | [Peech: Text to Speech Reader](https://openaitools.app/tool/peech-text-to-speech-reader) | 353,093 | -26% | Freemium | Listen to anything. Beautifully. | [.md](https://openaitools.app/tool/peech-text-to-speech-reader.md) |
| 4 | [Smart Assistant by Mailbutler](https://openaitools.app/tool/smart-assistant) | 47,200 | -8.7% | Freemium, Free Trial, Paid | An AI email assistant that drafts, summarizes, and perfects your messages in place | [.md](https://openaitools.app/tool/smart-assistant.md) |
| 5 | [Voice Out](https://openaitools.app/tool/voice-out) | 39,679 | -27.1% | Freemium | Turn any webpage, PDF, Doc or ebook into natural-sounding speech in 60+ languages | [.md](https://openaitools.app/tool/voice-out.md) |
| 6 | [Audeus: Text to Speech Reader](https://openaitools.app/tool/audeus-text-to-speech-reader) | 32,118 | -37.8% | Freemium, Free Trial | Turn PDFs, docs and web pages into natural-sounding audio you can listen to anywhere | [.md](https://openaitools.app/tool/audeus-text-to-speech-reader.md) |
| 7 | [GPT Reader & Transcriber](https://openaitools.app/tool/gpt-reader-a-free-ai-text-to-speech) | 29,995 | -16% | Free | Free ChatGPT-style text-to-speech and speech-to-text in your browser | [.md](https://openaitools.app/tool/gpt-reader-a-free-ai-text-to-speech.md) |
| 8 | [Read Aloud Reader](https://openaitools.app/tool/read-aloud-reader) | 28,361 | +87.7% | Freemium | Free browser text-to-speech with natural neural voices | [.md](https://openaitools.app/tool/read-aloud-reader.md) |
| 9 | [Readio](https://openaitools.app/tool/readio-1) | 12,402 | +6.7% | Freemium | Listen to PDFs, ebooks, and webpages in natural AI voices with synced highlighting. | [.md](https://openaitools.app/tool/readio-1.md) |
| 10 | [Clearly Reader](https://openaitools.app/tool/clearlyreader-com) | 10,350 | -29.1% | Freemium | Reader mode, text-to-speech and AI summaries for any web page | [.md](https://openaitools.app/tool/clearlyreader-com.md) |

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Source: https://openaitools.app/compare/castreader-vs-mail-reader-for-gmail

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