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Side-by-side features, use cases and pricing — because the right pick depends on your job and budget, not just the ranking.

Inbox Zero logo
Inbox Zero
✓ verifiedFree trial

Open-source AI email assistant that auto-labels mail, drafts replies in your voice and helps clear your inbox from web or Slack.

68K visits/mo1.6K saves
PDF.ai logo
PDF.ai
✓ verifiedFreemium

Well-known chat-with-PDF tool for summarizing and extracting; strong traffic.

484K visits/mo2.7K saves
8.6K visits/mo
Pricing
Starter: $18/user/mo
Plus: $28/user/mo
Professional: $42/user/mo

Free trial available

Hobby: $0
Pro: $10/mo
Ultimate: $20/user/mo
Enterprise: $30/user/mo

No public pricing

Core features
  • Automatic email labeling and categorization
  • Pre-drafted replies in your voice
  • Bulk unsubscribe and archive
  • Auto-files attachments to Drive/OneDrive
  • Works from web, Slack and Telegram
  • Open-source and self-hostable, SOC 2 Type 2
  • Chat with PDF documents
  • Summarize PDF content
  • Extract information from PDFs
  • Source citation for answers
  • OCR support
  • AI Agents for document analysis
  • Capture & Ask feature
  • Chatbot widget (add-on)
  • Advanced Fraud Protection
  • ID Verification with facial recognition
  • Income Verification through bank integration
Use cases
  • Reaching inbox zero quickly
  • Drafting replies faster
  • Cleaning up subscriptions
  • Managing email without switching apps
  • Analyzing legal documents
  • Summarizing financial reports
  • Extracting key information from books
  • Reviewing scientific papers
  • Understanding user manuals
  • Creating employee training materials
  • Landlords and property managers can use ProofUp to quickly and comprehensively screen potential tenants, making informed decisions and reducing risks associated with fraud and unreliable tenants.
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