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Ranked on the record · 46 apps

Best AI Email Assistants 2026

AI email assistants can sort inboxes, draft replies, summarize threads and help with follow-up work. This guide helps you compare access, pricing and email features before choosing a tool.

The page has no published ranking basis, so its order can change. Compare free plans, trial access, platform support and the listed inbox and sending features.

01

Mailbutler Smart Assistant

by Mailbutler Smart Assistant

Mailbutler Smart Assistant is an email assistant available on web, mobile and desktop platforms.

Free plan Free trial AndroidiPhone & iPadWebWindowsMacLinux+1
Record6.6 Visit site The record
02

Perplexity

Perplexity is an AI assistant for Android, iOS, Mac, Windows and the web, with search, uploads and image creation.

AndroidiPhone & iPadWeb+3
Record6.1 Visit
03

Shortwave

Shortwave is an email app for Android, iOS, Mac, Windows and the web that can schedule messages to send later.

AndroidiPhone & iPadWeb+2
Record6.1 Visit
04

Spike

Spike suits people who want to organize existing email accounts and manage multiple inboxes, as well as teams that need shared workspaces and collaboration tools.

AndroidiPhone & iPadWeb+2
Record6.1 Visit
05

Superhuman Go

Superhuman Go is an AI assistant that offers writing suggestions and uses screen context across apps and websites.

AndroidiPhone & iPadWeb+3
Record6.1 Visit
6
Fyxer

Fyxer sorts email and meeting inboxes and supports follow-up management on iOS, Mac, Windows and the web.

iPhone & iPadWebWindows+2 Free plan Record6.0 Visit
7
Serif

Serif handles routine email for shared addresses and escalates ambiguous or sensitive messages for team review.

iPhone & iPadWebWindows+1 $30 a month Record6.0 Visit
8
Spark +AI

Spark +AI searches email and related notes, and can draft, revise, proofread and translate messages.

AndroidiPhone & iPadWindows+1 $10 a month, billed yearly Record6.0 Visit
9
Drag

Drag is a shared inbox for Gmail teams with boards, assignments, shared drafts and AI features.

AndroidiPhone & iPadWeb+4 $12 a month, billed yearly Record5.8 Visit
10
Kerna

Kerna runs in Gmail and Outlook to sort mail, draft replies, and summarize threads.

WebWindowsMac €12 a month Record5.5 Visit
11
MailMaestro

MailMaestro may suit professionals who want help writing, revising, and summarizing email, or coordinating meeting replies.

WebBrowser extension $144 a year Record5.5 Visit
12
Metis Mail

Metis Mail is an open-source email assistant available as a web app or self-hosted service.

WebAPISelf-hosted $115 a year Record5.5 Visit
13
Kai

Kai connects email and calendars to triage mail, draft replies, schedule events and track commitments.

AndroidiPhone & iPadWeb+1 $20 a month Record5.3 Visit
14
MailWise

MailWise is a web AI email assistant that sorts messages, drafts replies, extracts action items, and sets reminders.

Web £15 a month Record5.2 Visit
15
MorningZero

MorningZero combines Gmail, Outlook and IMAP inboxes, with AI triage, search and replies that need your approval.

AndroidWebWindows+2 $15 a month, billed yearly Record5.2 Visit
16
EmailOps

EmailOps is an open-source desktop email client that runs AI on your computer across connected mail accounts.

WindowsMacLinux Free plan Record5.1 Visit
17
Inbox Zero

Inbox Zero sorts Gmail, Google Workspace and Outlook, drafts replies, blocks cold email and tracks email activity.

AndroidiPhone & iPadWeb+3 $20 a month Record5.0 Visit
18
MailCopilot

MailCopilot is a desktop email app for unified inboxes, offline use, and scheduled sending.

WindowsMacLinux Free plan Record4.9 Visit
19
Missive

Missive may suit people or teams who want a unified inbox across desktop and mobile platforms, with offline access, scheduled sending, and calendar tools.

AndroidiPhone & iPadWeb+2 $14 a month, billed yearly Record4.9 Visit
20
OpenMailBot

OpenMailBot is an open-source AI layer that summarizes email threads, drafts replies, answers inbox questions, and labels messages.

WebWindowsMac+2 Free plan Record4.9 Visit
21
Quell

Quell triages Gmail and Outlook, summarizes messages and drafts replies for your review.

AndroidWebBrowser extension A$14.95 a month Record4.8 Visit
22
Remail

Remail is an AI assistant for email and other writing tasks, with contextual reply drafts, tone settings, and scheduling links.

WebBrowser extension $9 a month Record4.8 Visit
23
Ellie

Ellie drafts replies in your voice in Gmail and Outlook, then saves them to Drafts for review.

WebWindowsBrowser extension Free plan Record4.7 Visit
24
EmailAgent

EmailAgent is a web email assistant that triages messages, drafts replies, coordinates meetings, and schedules vendor follow-ups.

Web Free plan Record4.7 Visit
25
InboxPilot

InboxPilot drafts business email replies using company information and sorts messages to the right team.

WebSelf-hosted $32 a month, billed yearly Record4.7 Visit

Before you choose

Check access and platforms

Confirm that an assistant works where you read email. The comparison covers web, macOS, Windows, Android, iOS and browser extensions.

Mailtwine lists Android, iOS, Linux, macOS, web and Windows support. Maylee lists Android, iOS, macOS, web and Windows support.

Start with the free option

A free plan lets you keep using a tool without a paid subscription. Perplexity, Spike, Spark +AI and Superhuman Go list free plans.

A free trial gives temporary access instead. Fyxer lists a seven-day trial, Shortwave lists a 14-day trial and Maylee lists a 30-day trial.

Match the inbox tasks

Compare inbox triage, AI reply drafting and thread summaries. These features address sorting, writing responses and catching up on conversations.

Follow-up actions can help you track what needs attention after a message. Check how a tool presents these controls before you commit.

Review sending controls

Automatic sending is a separate comparison point from reply drafting. If you want to approve messages yourself, check how the assistant handles sending.

Follow-up actions and summaries can affect how much control you keep over a conversation.

Read the paid terms

Compare the starting price, billing period and trial terms. Fyxer lists a starting price of $22.50 per user each month with annual billing, while Serif lists $30 per month and a seven-day trial.

Spark +AI lists paid access from $10 per user each month and a seven-day trial. Shortwave lists paid access from $30 per user each month and a 14-day trial.

Questions

Which assistants list a free plan?
Fyxer, Perplexity, Spike, Spark +AI, Superhuman Go and Shortwave list free plans.
Which assistants list a free trial?
Fyxer and Spark +AI list seven-day trials. Shortwave lists 14 days, and Maylee lists 30 days.
What platforms does Mailtwine support?
Mailtwine lists Android, iOS, Linux, macOS, web and Windows support.
What platforms does Maylee support?
Maylee lists Android, iOS, macOS, web and Windows support.
What inbox features can I compare?
The comparison covers inbox triage, AI reply drafting, automatic sending, thread summaries and follow-up actions.

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