Compare
Inbox Zero vs MailOS
Short answer: Pick Inbox Zero if you want AI-driven email organization and reply drafting; pick MailOS if you want AI-driven inbox summarization. Inbox Zero has a free plan, paid from $20/month per user; MailOS is free.
Which to pick
Pick Inbox Zero if you want…
- AI-driven email organization and reply drafting
- Inbox cleanup
- Integrations with Google Workspace, Microsoft Outlook or Slack (on Inbox Zero's list, not MailOS's)
Pick MailOS if you want…
- AI-driven inbox summarization
- A free, open-source tool
- Integrations with Google Cloud Pub/Sub or Gmail Watch API (on MailOS's list, not Inbox Zero's)
Side by side
- What it is
- Inbox Zero:Open-source email assistant that auto-organizes, drafts replies in your voice and provides analytics.
- MailOS:MailOS adds AI-powered classification, grouping and daily digests to Gmail without modifying emails.
- Best for
- Inbox Zero:AI-driven email organization and reply drafting
- MailOS:AI-driven inbox summarization
- Who it’s for
- Inbox Zero:Professionals, executives and teams who spend a lot of time managing email.
- MailOS:Professionals overwhelmed by email who use Gmail.
- Pricing
- Inbox Zero:Freemium
- MailOS:Free
- Starting price
- Inbox Zero:$20/month per user (Starter)
- MailOS:Free
- Free plan or trial
- Inbox Zero:Free trial
- MailOS:Free to use
- Plans
- Inbox Zero:Starter $20 per user / month · Plus $35 per user / month · Professional $50 per user / month
- MailOS:Starter $0/month per month · Pro $0/month per month · Premium $0/month per month
- Open source
- Inbox Zero:Yes, 12,349 GitHub stars
- MailOS:Yes, 0 GitHub stars
- Works with
- Inbox Zero:Gmail, Google Workspace, Microsoft Outlook, Slack, Telegram, iOS, Android, Notion
- MailOS:Gmail, Google Cloud Pub/Sub, Gmail Watch API
Inbox Zero features
- 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.
MailOS features
- AI Classification. Analyzes each email for intent, urgency, category and importance within seconds.
- Smart Grouping. Automatically clusters newsletters, promos and other categories out of the main view.
- Daily Digest. Generates a scannable 2-minute summary of important emails each morning.
- Task Extraction. Pulls action items, deadlines and follow-up cues from email bodies.
- Real-time Push. Uses Gmail Watch API and Pub/Sub to process emails instantly, no polling.
- AI Rule Creator. Creates email rules from plain-English descriptions or pre-built templates.
Inbox Zero vs MailOS FAQ
What is the difference between Inbox Zero and MailOS?+
Inbox Zero is an open-source inbox cleanup tool; MailOS adds AI classification and real-time digests on top of Gmail.
Should I use Inbox Zero or MailOS?+
Pick Inbox Zero if you want AI-driven email organization and reply drafting, Inbox cleanup or integrations with Google Workspace, Microsoft Outlook or Slack (on Inbox Zero's list, not MailOS's). Pick MailOS if you want AI-driven inbox summarization, a free, open-source tool or integrations with Google Cloud Pub/Sub or Gmail Watch API (on MailOS's list, not Inbox Zero's).
Is Inbox Zero or MailOS free?+
Inbox Zero has a free plan; paid plans start at $20/month per user (Starter). MailOS is free.
Which is cheaper, Inbox Zero or MailOS?+
MailOS is free, so it costs less. Inbox Zero starts at $20/month per user (Starter).
Is Inbox Zero or MailOS open source?+
Yes, both are open source: Inbox Zero (elie222/inbox-zero on GitHub) and MailOS (miteshrvasoya/MailOS on GitHub).
Do Inbox Zero and MailOS integrate with the same tools?+
Partly. Both list Gmail. Inbox Zero also lists Google Workspace, Microsoft Outlook, Slack, Telegram and 4 more; MailOS also lists Google Cloud Pub/Sub and Gmail Watch API.
On DevHunt
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.