Alternatives to SaneBox

An AI email agent that works inside Gmail to organize, schedule, write, and search on a prompt.

Superhuman bundles Mail, Docs and Go AI agents into one suite that works inside Gmail, Slack and 800+ tools

Replai drafts email replies in your own voice and auto-sorts your Gmail or Outlook inbox.

AI email assistant for Apple Mail, Gmail and Outlook: draft, reply, summarize and track opens inside your inbox

Spark Mail is an AI email client that unifies Gmail, Outlook and IMAP accounts and uses AI to draft, summarize and triage your inbox.

Newton Mail is a cross-platform email client with per-recipient read receipts, send later, and shared team inboxes.

Mailopoly is an AI email inbox that filters, extracts and drafts, with business chat channels in one place.

Multi-account email, calendar and to-do in one inbox — with Copilot writing help in the compose box

AI Gmail add-on that auto-drafts contextual email replies in your voice, ready for your review before sending

Email-native reminders: put a date before the @ sign and get a followup back then.

Canary Mail is an AI email client with Copilot drafting, thread summaries, a unified inbox, and PGP encryption.

Gmail's Gemini 3 era: AI Overviews summarize email threads and answer plain-language questions about your inbox

Stamp is an AI email secretary that drafts replies in your voice, prioritizes your inbox, and schedules meetings.

AI-first email app that turns your inbox into a chat-style hub for email, docs, tasks, and calls

Free iOS email client that unifies Hotmail, Outlook, Gmail, Office 365, iCloud, Yahoo and Exchange in one ad-free inbox.

Missive + AI brings OpenAI's GPT-5 summarization, translation, and reply drafting into a shared team inbox.

Jace is an AI email assistant for Gmail and Outlook that drafts replies in your voice for you to review.

Scape is a Mac email client with AI email drafting and one-click local meeting recording — no bot in the call.

AI email assistant that triages your inbox and drafts replies for $8.25/month.

Proton Mail delivers end-to-end encrypted email from Switzerland, now bundled with VPN, Drive, Pass, and Lumo AI.

Fastmail is private, ad-free email hosting with your own custom domain, Masked Email, and fast search.

Chuck is an iPhone email client that batch-deletes thousands of messages in seconds using on-device AI — nothing leaves your phone.

Slashy is an AI email client that drafts replies in your voice and chases follow-ups automatically.

AI email rewriting tool for Gmail, Outlook, LinkedIn, and iOS with custom tones and Quick Replies.

Free mail.com Mail App for iOS and Android: one inbox for Gmail, Outlook and Yahoo mail plus 65GB storage.

A native Gmail email client for iPhone, iPad and Mac with chainable custom actions

Yahoo Mail pairs free AI compose, AI thread summaries, and a Planner that turns email into tasks.

HEY Email is 37signals' rethink of email: a Screener vets first-time senders so only people you approve ever reach your Imbox.

myMail box is a free iOS email client that unifies Gmail, Outlook, iCloud and IMAP accounts with notes, Cloud, and Calendar.

Avec turns Gmail into a swipeable one-at-a-time email stack with hold-to-talk voice compose.