Top 7 Sumi Competitors & Alternatives in 2025
Updated onFind more companies like Sumi. We've shortlisted leading alternatives and mapped their strengths, pricing, and go-to-market focus.
Sumi
Best for power usersAn AI co‑pilot for Gmail that summarizes threads, drafts replies, extracts events, and provides a chat-style inbox assistant directly inside Gmail.
Starts at $0 / per user / monthly
Competitors
#1
Est. 2006 • 1k+ employees • Public (NASDAQ:GOOGL)Google Workspace
Best for SMBsA suite of cloud-based productivity and collaboration tools from Google that includes Gmail, Drive, Docs, Meet, and Calendar for businesses and organizations.
Starts at $7 / per user / month
Has a free trial
#2Lavender
Best for SMBsAn AI 'email coach' that sits in your inbox to analyze, personalize, score, and help draft emails to improve reply rates.
Starts at $0 / monthly
#3Flowrite
Best for power usersAn AI email and message writer that generates ready‑to‑send emails, summaries, and templates via a browser extension and integrations.
Starts at $5 / per user / monthly
- #4
Compose AI
Best for power usersAn inline AI writing assistant delivered as a browser extension that autocompletes text, generates replies, and offers personalization for faster writing.
Starts at $0
#5Mailbutler
Best for SMBsAn email productivity extension for Gmail, Apple Mail, and Outlook offering AI drafting, summarization, tracking, scheduling, and team features.
Starts at $4 / per user / monthly
#6Est. 2014 • 51-200 employeesGmelius
Best for mid-market companiesTeam-focused Gmail workflow platform offering shared templates, reminders, shared inboxes, automation and collaboration inside Gmail.
Starts at $24 / per user / month
Has a free trial
#7Est. 2014 • 51-200 employeesSuperhuman
Best for SMBsA premium, AI-enhanced email client focused on speed and productivity for professionals and teams.
Starts at $30 / per user / month
Has a free trial
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