Gropius vs Inbox Zero

Focuses on inbox cleanup rather than auto-reply generation

Which to pick

AI-driven email organization and reply drafting
Inbox organization
Open-source code (elie222/inbox-zero on GitHub)
Integrations with Google Workspace, Microsoft Outlook or Slack (on Inbox Zero's list, not Gropius')

What it is: Gropius:Gropius is an AI email assistant that learns your writing style and automatically replies to support emails in your voice.; Inbox Zero:Open-source email assistant that auto-organizes, drafts replies in your voice and provides analytics.
Best for: Gropius:AI-generated email replies in your own tone; Inbox Zero:AI-driven email organization and reply drafting
Who it’s for: Gropius:Customer support teams and professionals who handle large volumes of email.; Inbox Zero:Professionals, executives and teams who spend a lot of time managing email.
Pricing: Gropius:Contact sales; Inbox Zero:Freemium
Plans: Gropius:—; Inbox Zero:Starter $20 per user / month · Plus $35 per user / month · Professional $50 per user / month
Open source: Gropius:—; Inbox Zero:Yes, 12,349 GitHub stars
Works with: Gropius:Gmail; Inbox Zero:Gmail, Google Workspace, Microsoft Outlook, Slack, Telegram, iOS, Android, Notion

Style learning. Analyzes past emails to mimic your personal writing style.
Auto-response. Generates replies automatically, saving hours each week.
FAQ import. Lets you upload FAQs so the AI can answer common questions accurately.

Automatic labeling. AI categorizes incoming emails into smart folders like Newsletter, Urgent, etc.
Pre-written replies. Generates draft responses in your tone based on email history and calendar.
Bulk unsubscribe & archive. One-click removal of newsletters and unwanted senders.
Email analytics. Shows senders, volume and patterns to help you manage inbox load.
Calendar-aware drafts. Drafts incorporate your schedule and CRM data for meeting-related emails.
Multi-platform access. Use via Slack, Telegram, iOS, Android or web without switching apps.
Integrations. Connects to Gmail, Outlook, Slack, Notion, Stripe and other apps.
Privacy-first & open source. Data never used for AI training; self-hosting and SOC 2 certified.

Is Gropius or Inbox Zero free?+

Inbox Zero has a free plan; paid plans start at $20/month per user (Starter).

Is Gropius or Inbox Zero open source?+

Inbox Zero is open source (elie222/inbox-zero on GitHub). DevHunt has no public source repository on record for Gropius.

Do Gropius and Inbox Zero integrate with the same tools?+

Partly. Both list Gmail. Inbox Zero also lists Google Workspace, Microsoft Outlook, Slack, Telegram and 4 more.

Gropius

0 upvotes · Launched on DevHunt on Jan 6, 2026

Inbox Zero

18 upvotes · Launched on DevHunt on Jan 16, 2024

Based on each tool's website and DevHunt data. Details may change; check the official sites.