Paraphrase, proofread and summarize text with an AI writing workspace
Paraphrase, proofread and summarize text with an AI writing workspace
Spark Mail records 435,229 monthly visits with -13.5% month-over-month growth and Freemium, Free Trial pricing. WriteVoice records 13,362 monthly visits with -17.7% growth and freemium pricing.

AI dictation that turns messy speech into polished, ready-to-send text
| Dimension / Metric | ![]() | ![]() |
|---|---|---|
| Official Domain | sparkmailapp.com | writevoice.io |
| Pricing Model | Freemium, Free Trial | freemium |
| Monthly Visits | 435.23K (435,229) | 13.36K (13,362) |
| MoM Traffic Delta | -67.76K (-13.5%) | -2.88K (-17.7%) |
| Primary Market & Share | 🇺🇸 United States (31.3%) | 🇺🇸 United States (48.2%) |
| Direct Visits / mo | 198.43K | 5.35K |
| User Rating | 4.3 | 4.2 |
| Supported Platforms | Website | Website |

Smart, focused email with AI help — for individuals and teams
Spark's Smart Inbox and Priority highlight messages from important people and bundle newsletters and notifications so the rest of your inbox stays quiet.
An AI Assistant lets you find, summarize, and take action on anything in your inbox, while an AI writing assistant drafts emails and Auto-Drafts pre-writes replies.
Translate incoming messages, get instant summaries of long threads, and quickly grasp the point without reading every line.
Share drafts, leave private comments, delegate ownership, and track progress on email threads with your colleagues.

AI dictation that turns messy speech into polished, ready-to-send text
Installs as a custom keyboard on iOS and works in WhatsApp, Slack, iMessage, Notes, Notion and anywhere else you can type; matching Mac and web apps keep everything in sync.
Removes filler words, fixes grammar and structures rambling speech into readable paragraphs, bullets, to-do lists and action plans.
Adjusts the register of your text based on the app you are in, shifting between professional LinkedIn style, casual chat and formal business email.
Shorten, expand, fix grammar, emojify or otherwise remix a draft instantly without retyping it.
Paraphrase, proofread and summarize text with an AI writing workspace
Paraphrase, proofread and summarize text with an AI writing workspace

Blazing-fast keyboard-driven email experience with powerful AI features, but operates on a much higher subscription price point.
Blazing-fast keyboard-driven email experience with powerful AI features, but operates on a much higher subscription price point.

Significantly stronger team collaboration features with shared inboxes and internal chat, but less focus on standalone consumer AI drafting.
Significantly stronger team collaboration features with shared inboxes and internal chat, but less focus on standalone consumer AI drafting.

Provides cross-platform support with integrated AI drafting, but lacks some of Spark's advanced shared team workspace features.
Provides cross-platform support with integrated AI drafting, but lacks some of Spark's advanced shared team workspace features.
Just speak. Write faster, in any app.

Offers deeper AI-driven inbox organization and automated bundles, but has a different interface and navigation structure than Spark.
Offers deeper AI-driven inbox organization and automated bundles, but has a different interface and navigation structure than Spark.

Voice dictation that writes like you talk, in any app
Voice dictation that writes like you talk, in any app
SpecialistOne AI assistant that works wherever you work
SpecialistOne AI assistant that works wherever you work

Voice typing that works in every app and website
Voice typing that works in every app and website

Speak naturally, get polished text anywhere you write
Speak naturally, get polished text anywhere you write

Transforms traditional email threads into conversational chat interfaces, but requires adjusting to a non-standard inbox layout.
Transforms traditional email threads into conversational chat interfaces, but requires adjusting to a non-standard inbox layout.

Free / Open-sourceOpen-source and self-hostable AI email assistant focused on blocking cold emails and sorting, but lacks a full native mobile app client.
Free / Open-sourceOpen-source and self-hostable AI email assistant focused on blocking cold emails and sorting, but lacks a full native mobile app client.