
Lightning-fast email productivity suite with powerful AI triage and shortcuts, but carries a steep subscription price.
Lightning-fast email productivity suite with powerful AI triage and shortcuts, but carries a steep subscription price.
Inbox Zero: Open-source AI email assistant that sorts messages and blocks cold emails, offering full privacy and self-hosting. Inbox Zero records 89,348 monthly visits with +6.8% month-over-month growth and Freemium, Free Trial pricing. Shortwave records 193,316 monthly visits with -5.1% growth and Freemium, Free Trial pricing.

The AI email assistant that sorts your inbox and drafts replies in your voice
| Dimension / Metric | ![]() | ![]() |
|---|---|---|
| Official Domain | getinboxzero.com | shortwave.com |
| Pricing Model | Freemium, Free Trial | Freemium, Free Trial |
| Monthly Visits | 89.35K (89,348) | 193.32K (193,316) |
| MoM Traffic Delta | +5.68K (+6.8%) | -10.44K (-5.1%) |
| Primary Market & Share | 🇺🇸 United States (43.3%) | 🇺🇸 United States (66.6%) |
| Direct Visits / mo | 26.08K | 155.93K |
| User Rating | 4.4 | 4.5 |
| Supported Platforms | Website | Website |

The AI email assistant that sorts your inbox and drafts replies in your voice
Incoming mail is sorted into categories like To Reply, Newsletter, Cold Email, Calendar and Notification as it arrives, using default rules or categories you define yourself.
Emails that need a response get a draft written in your tone and referencing your real calendar availability and CRM context, ready to review and send.
Stop cold outreach from ever reaching the inbox, see which newsletters you never read, then unsubscribe and archive them in bulk.
Dashboards reveal who emails you most, which senders dominate your inbox and how your habits change over time so you can act on it.

Automate your email with AI
A conversational agent that organizes your inbox, identifies what matters, drafts replies, writes scheduling emails and runs multi-step workflows from a single prompt.
Plain-language AI filters and scripts that automatically label, archive, star or sweep messages so you reach inbox zero faster.
Ask questions in natural language and search across your own messages — or your whole team's emails and attachments — to get answers rather than links.
Shared threads, private comments, assigned next steps and shared labels give a team one live view of important conversations.

Lightning-fast email productivity suite with powerful AI triage and shortcuts, but carries a steep subscription price.
Lightning-fast email productivity suite with powerful AI triage and shortcuts, but carries a steep subscription price.

Collaborative email client combining shared inboxes, team chat, and AI assistance for streamlined workflow management.
Collaborative email client combining shared inboxes, team chat, and AI assistance for streamlined workflow management.

Feature-rich cross-platform email client with integrated AI summarization and writing tools across multiple devices.
Feature-rich cross-platform email client with integrated AI summarization and writing tools across multiple devices.

SpecialistVersatile AI assistant for inbox management and scheduling accessed directly via email, SMS, or WhatsApp.

Privacy-focused email client featuring cross-platform support and a built-in generative AI assistant for drafts.
Privacy-focused email client featuring cross-platform support and a built-in generative AI assistant for drafts.

SpecialistAutonomous AI executive assistant handling complex email triaging, meeting notes, and calendar scheduling.
SpecialistAutonomous AI executive assistant handling complex email triaging, meeting notes, and calendar scheduling.

SpecialistTransforms traditional email threads into conversational chat workspaces with integrated AI summaries and tasks.
SpecialistTransforms traditional email threads into conversational chat workspaces with integrated AI summaries and tasks.

SpecialistMulti-account AI email client that summarizes long threads and extracts actionable items automatically.
SpecialistMulti-account AI email client that summarizes long threads and extracts actionable items automatically.

SpecialistFree web-based tool that rewrites rough or emotional email drafts into polished, professional workplace messages.
SpecialistFree web-based tool that rewrites rough or emotional email drafts into polished, professional workplace messages.

SpecialistThe AI agent that runs your team's inbox
SpecialistThe AI agent that runs your team's inbox

SpecialistSpecialized AI email assistant that drafts contextual replies matching your personal writing voice and tone.
SpecialistSpecialized AI email assistant that drafts contextual replies matching your personal writing voice and tone.
SpecialistProductivity extension for Gmail and Outlook adding AI writing, email tracking, and automated follow-ups.
SpecialistProductivity extension for Gmail and Outlook adding AI writing, email tracking, and automated follow-ups.