9 Best AI Email Assistants of 2026

Superhuman Mail is the most complete pick for people whose job runs through email. The app splits the inbox so messages from your team, VIPs and tools such as Google Docs or Asana sit in their own streams, and it reminds you to follow up when a sent email goes unanswered. Superhuman AI is included from the $25 Starter plan, which also bundles calendar, scheduling and team collaboration. The $33 Business plan adds the features most buyers want from an AI email assistant: auto drafts, Ask AI over your mail, custom auto labels, CRM integrations and a Mail MCP server. For teams that will not switch clients, the Email Assistant runs inside Gmail or Outlook to sort mail, clear noise and draft replies in your voice. The trade-offs are price and commitment: there is no free plan on the pricing page, and both listed prices are billed annually.

Fyxer suits people who want an assistant on top of the inbox they already use. You sign in with Google or Microsoft, and on Pro it drafts replies in your tone, sorts and labels incoming mail, records meetings and keeps a follow-up list current. Spaces and Flows extend it beyond email: shared workspaces per client and automated routines such as a meeting agenda sent before each call. Integrations listed on the pricing page include Gmail, Outlook, Slack, Teams and an MCP connection to Claude and ChatGPT. Pricing is credit based: the free plan gives 400 credits a month, and Pro gives 3,000 per paid member after a launch offer of unlimited credits for 3 months. Sorting costs one credit per 5 emails, so very large inboxes should check the math. Pro is $37 per person per month billed annually, with a 14-day trial.

Shortwave is the most AI-forward of the dedicated email clients here. Its agent can organize the inbox, check your calendar and send invites, write replies that follow your style, and answer questions by searching your mail. AI filters let you describe rules in plain English, such as archiving or labeling certain messages, with 3 filters on Business and 50 on Max. Paid tiers differ mainly in AI muscle: Business uses Standard intelligence and searches 5 years of history, Premier adds unlimited AI search history and double usage, and Max uses Shortwave's most capable model level. Teams get shared threads, private comments, assignments and shared labels. The docs say the free plan includes most productivity features and the AI executive assistant, and one paid seat covers all of a person's accounts. The limits to note are the daily AI quota and a jump in price at Max.

For many Gmail users the cheapest route to an AI email assistant is the one already built in. Google lists Gemini in Gmail as part of Google AI Plus at $4.99 per month, a plan that also raises Gemini app limits to twice the free tier and adds 400 GB of storage across Gmail, Drive and Photos. The step up to Google AI Pro adds Gemini in Docs and higher limits. Because the assistant lives inside Gmail, setup is a subscription and nothing else. The trade-off is scope. Gemini works in Google's apps only, so Outlook or IMAP users gain nothing, and the plan page describes Gemini in Gmail in general terms rather than listing triage rules, auto drafts or follow-up tracking like the dedicated tools. Treat it as a capable writing and summarizing helper inside Gmail rather than an inbox autopilot.

Spark is the most provider-flexible app in this list. It connects Google, Outlook, Exchange, iCloud, Yahoo and any IMAP account, and the free plan already includes the Smart Inbox and unlimited accounts. Spark +AI adds a writing assistant, thread summaries and translation, and the AI Assistant can find, summarize and act on mail when you ask. Plus, at $10 per user per month on the US pricing page, adds advanced productivity tools, team collaboration, templates and 40 AI Meeting Notes. Pro at $20 adds Auto-Drafts, Autopilot, read statuses and a HubSpot integration. Focus features such as Gatekeeper for new senders, Group by Sender and Set Aside are a strength. The catch is that the feature most buyers associate with AI email assistants, drafts waiting for review, sits on Pro, and Readdle does not publish an integration count.

Canary Mail is the budget pick. Its Growth plan costs $36 per year, shown as $3 per month, and adds the AI Copilot: prioritized inbox tabs, an AI writer that composes and replies, and thread summaries. Growth also brings read receipts, send later, calendar scheduling, an inbox cleaner and app integrations. Pro+ at $100 per year adds security features that few email assistants offer, including PGP encryption, SecureSend for HIPAA use, and phishing and impersonation detection. The free plan covers a unified inbox with unlimited mail accounts across Mac, iOS, Android and Windows on up to 2 devices. Canary's FAQ says there are no monthly subscriptions, only yearly or lifetime purchases, and every plan is a single-user license, so it fits individuals better than teams. The AI features are useful but lighter than the agent-style tools higher in this ranking.

Copilot is the natural choice for anyone whose email already runs through Outlook. Microsoft 365 Personal, at $9.99 per month or $99.99 per year in the US, includes the Outlook, Word, Excel, PowerPoint and OneNote desktop apps with Microsoft Copilot, higher Copilot chat usage than the free tier and 1 TB of storage. Businesses can buy Microsoft 365 Business Standard with Copilot at $23.50 per user per month or Business Premium with Copilot at $32.00, both paid yearly, or add Copilot Business to an existing plan. The value is the bundle: for many buyers the Office apps and storage justify the price before any AI. The limits are scope and depth. Copilot is tied to Microsoft's apps, and Microsoft's pricing pages focus on the suite rather than email-specific automation such as triage rules or auto drafts, so heavy email users may still want a dedicated tool.

Lindy treats email as one job for a general AI assistant. Its email agent triages incoming mail without filters, learns preferences when you chat with it in plain English, leaves drafts written in your voice for review, and researches senders so you have context before replying. Added to a thread, it offers times from your calendar and books meetings. Setup starts by linking Gmail or Outlook, and a Chrome extension brings Lindy into Gmail. Beyond email, the same assistant handles meetings, phone calls, scheduled routines and 1,500+ integrations plus MCP, which makes it attractive if you want one agent for several kinds of busywork. Pricing is credit based. New accounts get $50 in credits valid for 7 days, then the Team plan starts at $49.99 per month for 5,000 credits, with larger bundles such as 15,000 credits for $99.99. Costs therefore track how much work you hand over.

Gmelius is built for teams that run client communication through Gmail. Meli, its AI assistant, drafts email replies, sorts and classifies messages, schedules meetings, follows up and helps you reach inbox zero, starting at $19 per user per month billed annually. The Growth plan at $25 adds what operations teams need: shared labels, automation rules, auto-assignment, shared templates, SLA and email analytics, and most integrations plus an API. Pro at $40 raises usage caps for agents that handle more of the queue on their own. Gmelius frames each plan as a seat price plus included agent work, and offers a 7-day trial and a free 30-minute onboarding call. The limits are clear: it is Gmail and Google Workspace only, there is no permanent free plan, and the team features add setup work that a solo user may not need.