Zero for Outlook is a strong option, but it is not the right fit for everyone. Below are 10 alternatives compared on rating, install base, pricing and the use case each one actually wins on.
Transform Outlook on the web into a keyboard-driven powerhouse. Zero for Outlook brings you lightning-fast shortcuts, Vim-style navigation, and intelligent productivity features, all designed to help you reach Inbox Zero faster. Why Install Zero for Outlook? Command Bar Press Cmd+K (or your custom shortcut) to instantly access every feature. Search and execute commands faster than you can click, snooze emails, navigate folders, toggle settings, or jump to Calendar and To Do in seconds. Vim-Style Navigation Navigate like a pro with h/j/k/l keys. Move seamlessly between folders and messages, select multiple emails with Shift+J/K, and keep your hands on the keyboard where they belong. Smart Snooze Overlay Press 'S' on any message to open an elegant snooze menu. Choose from preset times (Later today, Tomorrow, This weekend, Next week) or pick a custom date, all with keyboard navigation. Undo Archive Shortcut Accidentally archived an important email?
| Extension | Rating | Users | Pricing | Best for |
|---|---|---|---|---|
| Zero for Outlook (original) | 5.0 | 32 | Free | Zero for Outlook adds configurable keyboard shortcuts and extends functionality of Outlook on the web. |
| Quillbot: AI Writing Assistant with Humanizer, Paraphraser & AI Detector | 4.7 | 5M+ | Free | Write better emails, essays and messages with Quillbot's Grammar Checker, Paraphrasing Tool, Generative AI, Summarizer and more! |
| DeepL: translate and write with AI | 4.7 | 4M+ | Free | Translate while you read and write with DeepL Translate, the world’s most accurate translator. |
| Mailtrack | 4.4 | 3M+ | Freemium | Salespeople and recruiters who need to know when an email was actually opened. |
| Google Mail Checker | 4.1 | 2M+ | Free | Displays the number of unread messages in your Google Mail inbox. You can also click the button to open your inbox. |
| Apollo.io: Free B2B Phone Number & Email Finder | — | — | Free | Apollo enables users to find contact info, connect with buyers, track emails, and more for free. |
| HubSpot Sales | — | — | Free | Email tracking, CRM for Gmail, and sales productivity tools in your inbox |
| Email Finder by ContactOut – Email Lookup Tool | 4.4 | 600K+ | Free | Find emails for 75% of Linkedin or ANY website. Save profiles to CRM. Chatgpt comments & email writer. Trusted by 76% of Fortune500. |
| Fathom AI Note Taker for Google Meet | 4.9 | 500K+ | Free | Records, transcribes & summarizes meetings FREE |
| Email Finder by Snov.io | 4.9 | 400K+ | Free | Find email addresses on any website. Our Email Finder lets you collect leads and grow sales on the go. |
| GMass: Powerful mail merge for Gmail | 4.8 | 400K+ | Freemium | A powerful mass email and mail merge system for Gmail. |
Write better emails, essays and messages with Quillbot's Grammar Checker, Paraphrasing Tool, Generative AI, Summarizer and more!
Why it replaces Zero for Outlook: Another popular Email extension: Write better emails, essays and messages with Quillbot's Grammar Checker, Paraphrasing Tool, Generative AI, Summarizer and more!
Translate while you read and write with DeepL Translate, the world’s most accurate translator.
Why it replaces Zero for Outlook: Another popular Email extension: Translate while you read and write with DeepL Translate, the world’s most accurate translator.
Read receipts and link tracking for Gmail.
Why it replaces Zero for Outlook: Another popular Email extension: Read receipts and link tracking for Gmail.
Displays the number of unread messages in your Google Mail inbox. You can also click the button to open your inbox.
Why it replaces Zero for Outlook: Another popular Email extension: Displays the number of unread messages in your Google Mail inbox. You can also click the button to open your inbox.
Apollo enables users to find contact info, connect with buyers, track emails, and more for free.
Why it replaces Zero for Outlook: Another popular Email extension: Apollo enables users to find contact info, connect with buyers, track emails, and more for free.
Email tracking, CRM for Gmail, and sales productivity tools in your inbox
Why it replaces Zero for Outlook: Another popular Email extension: Email tracking, CRM for Gmail, and sales productivity tools in your inbox
Find emails for 75% of Linkedin or ANY website. Save profiles to CRM. Chatgpt comments & email writer. Trusted by 76% of Fortune500.
Why it replaces Zero for Outlook: Another popular Email extension: Find emails for 75% of Linkedin or ANY website. Save profiles to CRM. Chatgpt comments & email writer. Trusted by 76% of Fortune500.
Records, transcribes & summarizes meetings FREE
Why it replaces Zero for Outlook: Another popular Email extension: Records, transcribes & summarizes meetings FREE
Find email addresses on any website. Our Email Finder lets you collect leads and grow sales on the go.
Why it replaces Zero for Outlook: Another popular Email extension: Find email addresses on any website. Our Email Finder lets you collect leads and grow sales on the go.
A powerful mass email and mail merge system for Gmail.
Why it replaces Zero for Outlook: Another popular Email extension: A powerful mass email and mail merge system for Gmail.
Direct comparisons with the extensions people weigh against it.
Quillbot: AI Writing Assistant with Humanizer, Paraphraser & AI Detector is the closest match. Another popular Email extension: Write better emails, essays and messages with Quillbot's Grammar Checker, Paraphrasing Tool, Generative AI, Summarizer and more!
Yes — Quillbot: AI Writing Assistant with Humanizer, Paraphraser & AI Detector, DeepL: translate and write with AI, Google Mail Checker are free.
