Inbox Zero vs Mailr

Inbox Zero connects to Gmail or Outlook and uses AI to label incoming mail, draft replies in your voice, and surface what needs attention first. You get pre-written responses waiting when you open your inbox, plus bulk unsubscribe tools for newsletters you never read. The product works on web, iOS, Android, Slack, and Telegram so you can triage mail without living in your email tab.

Most email assistants stop at summarization. Inbox Zero also blocks cold emails, files attachments automatically on higher tiers, and pulls calendar and CRM context into drafts so scheduling replies match your real availability. The codebase is open source with 9k GitHub stars, SOC 2 Type 2 certification, and a self-host option for teams that want full control.

Starter plans cover solo operators who want labels, analytics, and reply drafts. Plus adds Slack, Notion, Stripe integrations, and an unlimited knowledge base. Professional adds team analytics and dedicated onboarding. Over 20,000 professionals use Inbox Zero, and every paid plan includes a 7-day free trial.

Mailr drafts and replies to email from a Chrome extension you open right in the browser. You type a short instruction describing what you want to say, pick one of more than 10 tones such as friendly, informal, or persuasive, and Mailr generates the full message in one click.

Compared with inbox-native assistants that plug into Gmail directly, Mailr stays a lightweight Chrome add-on focused on composing new mail and quick replies rather than auto-drafting every incoming thread. The free tier caps you at 2,000 words, while Premium raises that to 100,000 words per month with faster generation and early beta access.

Mailr suits professionals who live in Chrome and want help starting or finishing messages without switching tabs. The site notes Mailr was acquired by MailWiz, which now offers a separate Gmail-integrated product at mailwiz.app, but the Mailr extension and pricing page remain live on mailr-ai.com.