- AI Email Assistant Definition
- software that uses artificial intelligence to manage your inbox: triaging messages by urgency, drafting replies in your voice, extracting tasks from emails, and tracking follow-ups. Unlike email clients that help you work faster, AI email assistants do the work for you.
The short answer: the best AI email assistant in 2026 is alfred_ (23/25, keeps track of what’s waiting on you across Gmail and Outlook, from $29.99/month). It is the best all-in-one tool for email power users, and the fastest: email, calendar, to-dos and a morning brief in one assistant, and you can reply to a client by text without opening an app. The tools below it each cover one piece of that: an email client you switch to, a filter, or a drafting sidebar.
Full disclosure: alfred_ is our product, we build it, and it ranks first on this page. The rubric below is the honest reason why; every score and price is laid out so you can discount our bias and judge for yourself. Pricing for all 13 tools checked against vendor pricing pages on October 25, 2026.
The test for any tool on this list is one question: when you open your inbox, do you already know what needs you, or is it just easier to find out? If you already have Copilot or Gemini and are not sure a paid tool adds anything, start with can ChatGPT, Copilot or Gemini manage my email.
| Tool | What it does without being asked | Email + calendar | Price | Who uses it |
|---|---|---|---|---|
| alfred_ | Flags the emails that need your answer, keeps the list of replies you owe, suggests to-dos, drafts replies that wait for your approval, sends a 7 AM brief by text | Both, Gmail and Outlook | From $29.99/mo or $299.99/yr | Power users who want email, calendar and to-dos in one place, and to reply by text |
| Superhuman | Auto Labels and Split Inbox sorting; drafts when you ask | Email; calendar view only | Mail $25/mo Starter, $33 Business (billed yearly) | People who want to switch email apps and process mail by hand |
| Shortwave | AI bundles and Organize suggestions; Ghostwriter drafts on demand | Email; Gmail-first | Free plan; $30-$120/seat/mo | Gmail users who want a new email client |
| Fyxer AI | Labels inbound mail and pre-writes draft replies | Email only; meeting notes on higher tiers | $37/mo Pro annual ($49 monthly) | People whose only bottleneck is writing replies |
| SaneBox | Moves low-priority mail out of the inbox by header | Email only, any client | $9.49-$42.99/mo ($5.42-$26.58 yearly) | Passive noise reduction without switching apps |
| Spark Mail | Smart Inbox sorting; AI compose on demand | Email; basic calendar | Free, $10/mo Plus | Budget cross-platform client with team features |
| Spike | Priority Inbox; chat-style threads | Email; calendar and notes bundled | Free; from $6/user/mo yearly | Teams who want email to feel like messaging |
| Lindy | Runs routines you set up in a sentence: a daily brief, email drafts, meeting notes | Email + calendar, from Slack | $49.99/mo Team (5,000 credits) | Teams that work in Slack |
| Inbox Zero | AI rules label, archive, draft and track replies | Email only; Gmail | $20-$50/user/mo | Gmail users who want open-source AI rules |
| Microsoft Copilot | Summaries, drafts, inbox prioritization on newer plans | Outlook + full M365 suite | $30/user/mo add-on (Business from $18, promotional) | Organizations already paying for M365 |
| Gemini in Gmail | On-demand summaries and Help me write | Gmail only | Free ($9.99 AI Plus, $19.99 AI Pro) | The free default every Gmail user already has |
| Missive | Team rules and AI assistant across shared inboxes | Email + chat + SMS, team-wide | $14-$36/user/mo | Teams sharing one address |
| MailMaestro | AI compose and reply sidebar | Outlook and Gmail | Free-$15/mo | Outlook users who only want better drafts |
Choose alfred_ if you want an AI personal assistant for email and calendar that tells you what is waiting before you sit down. If you are shopping for the whole assistant category rather than email alone, see our best AI personal assistant test.
Why You Need an AI Email Assistant in 2026
The average professional receives 121 business emails per day (Radicati Group, 2024). Of those, research suggests only 38% require a meaningful response. That means you’re spending hours evaluating messages that don’t need your brain.
- 28% of your workweek goes to email (McKinsey Global Institute)
- 121 emails per day, each requiring a micro-decision
- 23 minutes to refocus after each email check (Gloria Mark, UC Irvine)
- $21,000+ in lost productivity per year at average professional salaries
AI email assistants solve this by handling the triage, drafting, and organization layers so you only touch emails that actually require your expertise. For the broader email tool landscape, including non-AI options, see our best email management tools guide. For teams managing a shared address, shared inbox software solves a different problem. Here are the 13 best AI email assistant options in 2026, including the free defaults you may already have.
alfred_ is the best AI email assistant for work
If you want one assistant that flags what needs your answer, tracks the replies you owe, finds the replies you're waiting on when you ask, suggests to-dos, manages your calendar and sends a morning brief, alfred_ does all of it and keeps you in control of every outgoing message. Most others solve one piece.
Best for
- Executives and founders with a full inbox and a full calendar
- Professionals using Google Workspace or Outlook
- Anyone who keeps losing track of replies and follow-ups
Not for
- Users who need meeting transcription
- Teams that need a shared inbox with assignment
What We Checked, and Where You Can Check It
alfred_ is our product, so every claim we make about it below points to its documentation, and every competitor price points to the vendor’s own pricing page. Checked October 25, 2026.
alfred_, from its documentation:
- Flags the emails that need your answer, keeps a standing list of the replies you owe, and finds the replies you’re waiting on when you ask (or every Monday): follow-up tracking
- Drafts a reply when an email needs one (email drafting is on by default), and every draft waits for your approval: drafts
- Texts you when an email you described arrives, and sends your reply when you say send: email rules and reply by text
- A morning brief at 7 AM by text, with an email copy if you want one: morning brief
- Up to six Gmail, Outlook and IMAP accounts: connect your tools
- Plans from $29.99 a month, every plan with a 7-day free trial: plans and usage
Competitor prices, from each vendor’s pricing page: Superhuman Mail and the Superhuman suite, Shortwave, SaneBox, Spark, Spike, Fyxer, Lindy, Inbox Zero, Microsoft 365 Copilot, Google AI plans, Missive and MailMaestro.
Step-by-step guides for each alfred_ feature: a text only when an important email comes in, tracking what you owe and what you’re owed, whether an AI email assistant can send without your approval and a daily summary and weekly lists.
How We Scored These Tools
Five pillars, 1-5 points each, total /25: Triage (auto-prioritizes inbound mail by urgency and type, without being asked), Drafts (voice-matched replies, proactive beats on-demand), Task extraction (commitments captured from email content, yours and theirs), Follow-up tracking (surfaces sent emails still awaiting a reply), Low setup friction (works out of the box with your existing account).
How the scores were produced: alfred_ we use daily, it is our product, and the field tests against other assistants are run by this article’s author. The competing tools were scored from trials where a trial exists, their documented feature sets, and their own product pages; every price on this page was checked against the vendor’s pricing page on October 25, 2026. What this rubric deliberately rewards is keeping track without being asked: a tool that tells you what is waiting outscores a tool that helps you get through it faster. If you think that weighting is wrong, the per-pillar columns below let you re-rank with your own.
Quick Scorecard: 13 AI Email Assistants Scored Out of 25
| Tool | Score /25 | Triage | Drafts | Tasks | Follow-up | Setup |
|---|---|---|---|---|---|---|
| alfred_ | 23 | 5 | 4 | 5 | 5 | 4 |
| Superhuman | 15 | 4 | 4 | 1 | 2 | 4 |
| Shortwave | 15 | 4 | 4 | 2 | 1 | 4 |
| Fyxer AI | 15 | 4 | 4 | 1 | 2 | 4 |
| Inbox Zero | 14 | 4 | 3 | 1 | 3 | 3 |
| Microsoft Copilot | 13 | 3 | 4 | 2 | 1 | 3 |
| Missive | 13 | 3 | 3 | 2 | 2 | 3 |
| Lindy | 13 | 3 | 4 | 2 | 2 | 2 |
| SaneBox | 12 | 3 | 0 | 0 | 4 | 5 |
| Gemini in Gmail | 11 | 2 | 3 | 1 | 0 | 5 |
| MailMaestro | 11 | 2 | 4 | 1 | 0 | 4 |
| Spark Mail | 11 | 3 | 3 | 0 | 1 | 4 |
| Spike | 8 | 3 | 1 | 0 | 0 | 4 |
Why alfred_ scores 23/25: It covers triage, tasks and follow-up in one place: it flags what needs your answer, suggests to-dos from your email and finds the replies you’re waiting on when you ask. alfred_ drafts a reply when an email needs one (email drafting is on by default), and every draft waits for your approval; drafts score 4, level with Fyxer’s proactive drafts. Setup loses one point because OAuth connection to Gmail or Outlook takes 3–5 minutes on first use.
Quick Comparison: All 13 AI Email Assistants
| Tool | Price | Auto-triage? | AI drafts? | Task extraction? | Follow-up tracking? | Works with |
|---|---|---|---|---|---|---|
| alfred_ | From $29.99/mo | Yes | Yes (on by default, for your approval) | Yes | Yes (replies you owe; waiting when you ask) | Gmail, Outlook, IMAP |
| Superhuman | $25–$40/mo (Mail) | Yes | Yes (on demand) | No | No | Gmail, Outlook |
| Shortwave | Free–$120/mo | Yes | Yes (Ghostwriter) | No | No | Gmail |
| Fyxer AI | $37/mo | Yes | Yes (proactive) | No | No | Gmail, Outlook |
| Lindy | $49.99/mo (Team) | Yes (inbox management) | Yes (when a reply is needed) | Not stated | Nudges | Gmail, Outlook |
| Inbox Zero | $20–$50/user/mo | Yes (AI rules) | Yes | No | Yes (reply tracking) | Gmail |
| Microsoft Copilot | $30/mo add-on | Partial (newer plans) | Yes (on demand) | Partial | No | Outlook/M365 |
| Missive | $14–$36/user/mo | Yes (team rules) | Yes (on demand) | Partial (assignments) | Partial (statuses) | Gmail, Outlook, IMAP |
| SaneBox | $9.49–$42.99/mo | Yes (filter only) | No | No | Yes (SaneNoReplies) | Any client |
| Gemini in Gmail | Free–$19.99/mo | No (on-demand only) | Yes (Help me write) | No | No | Gmail |
| MailMaestro | Free–$15/mo | Partial | Yes (on demand) | No | No | Outlook, Gmail |
| Spark Mail | Free–$20/mo | Smart notifications | Yes (on demand) | No | No | Gmail, Outlook, iCloud |
| Spike | Free–$12/user/mo | Priority Inbox | No | No | No | Gmail, Outlook, iCloud |
The pattern: Most tools cover one or two of these. alfred_ covers flagging what needs you, to-dos from email and follow-ups together. A useful rule of thumb: an AI email tool that cannot tell you which of your sent emails are still unanswered is a writing aid, not an assistant.
The 13 Best AI Email Assistants, Reviewed
alfred_ is an AI assistant for client-facing teams, and each person on the team gets their own. It reads your email across up to six Gmail, Outlook and IMAP accounts, flags the emails that need your answer, and keeps a standing list of the replies you owe and finds the ones you’re waiting on when you ask. It manages your calendar, prepares you for meetings from your email, calendar and notes, and sends a morning brief at 7 AM by text, with an email copy if you want one. Most AI email tools speed up one step of doing email. alfred_ is built for the part that slips: knowing what is still open. On a team, each person’s assistant keeps that list for their own clients, on one bill.
- Pricing
- plans from $29.99/month or $299.99/year; teams $49.99 a seat a month, on one bill
- Works with
- Gmail, Outlook
What it actually does:
- Needs you: Every incoming email is read, and the ones that need your answer are flagged. You see what matters first without scanning 121 messages yourself.
- Replies you owe: a standing list on Home, and the first thing in your morning brief.
- Replies you’re waiting on: alfred_ finds emails you sent that haven’t gotten a response when you ask, or every Monday with the Chase what I’m owed routine, so you can follow up when it matters (how both lists work).
- To-dos from email: alfred_ suggests to-dos from what people ask you in email. You accept the ones you want.
- Draft replies: alfred_ drafts a reply when an email needs one (email drafting is on by default) or when you ask, and it learns how you write from the mail you’ve sent. Every draft waits for your approval (what can send without you).
- Reply by text: tell alfred_ which emails matter (“text me when a client emails to cancel”) and it texts you when one arrives (how text alerts work). Text back what to say, see the reply, text “send” and it goes out from your own email. The fastest way to answer email, with no app to open.
- Morning brief: the meetings ahead, the tasks due, the replies you owe and the drafts waiting, at 7 AM by text, with an email copy if you want one (a daily summary and weekly lists).
- Calendar: Schedules, moves and finds time across your connected calendars.
- Slack, Teams and your CRM: Connect Slack or Microsoft Teams and alfred_ shows who is waiting on an answer from you there too. Connect HubSpot or Salesforce and it looks up the contact, deal or account behind an email when you ask.
The unified inbox: both accounts in one list, with suggested to-dos flagged per thread. Shown with sample data.
The result is that you open your inbox already knowing what needs you and who still owes you an answer.
Limitations: No meeting transcription. Drafts and replies wait for your approval; the exceptions are automations you set up yourself, like a rule that forwards mail or a routine you tell to send without asking. alfred_ reads Slack and Teams and does not post there as you: a message goes out only when you send it.
Superhuman
An Email Client You Switch To
Superhuman underwent a major transformation in 2025. Grammarly acquired Superhuman in July 2025 (last valued at $825M), then in October 2025 the parent company rebranded entirely as “Superhuman”, Grammarly gave up its own name. The result is the Superhuman Suite: Grammarly (writing assistant, 40M daily active users), Superhuman Mail (the email client), Coda (workspace/docs), and Superhuman Go (AI assistant with 100+ app integrations).
- Pricing
- Superhuman Mail: Starter $25/member/mo billed annually ($30 monthly) · Business $33 ($40 monthly) · the suite's Free and $12 Pro plans cover Grammarly, Docs and Go, not Mail
- Works with
- Gmail, Outlook
What it does: Keyboard-first design with sub-100ms load times. Split Inbox organizes messages into streams. Auto Labels, AI triage, and AI auto-draft replies. Superhuman Go works across browser tabs as an AI assistant. Grammarly writing assistance bundled in all paid tiers.
The catch: Superhuman Mail starts at $25 a member a month billed annually (Starter); the suite’s $12 Pro plan covers Grammarly, Docs and Go but not Mail. Superhuman makes you faster at doing email but doesn’t do email for you. You still read, decide, and respond to every message. It is a faster way to do email by hand. For those who want email kept track of, it is the wrong category.
Shortwave
A Gmail-Only Email Client
Shortwave is an AI-first email client that shipped 96 features in 2024. Its AI search lets you ask natural language questions like “what did Sarah say about the Q3 budget?” and get answers pulled from your email history. In late 2025, Shortwave launched Tasklet, an AI automation platform connecting email to Slack, Notion, Asana, and Google Drive in plain English, and Ghostwriter, which learns your personal writing voice from sent emails.
- Pricing
- Free plan · Business $30/seat/mo · Premier $45 · Max $120 · 14-day free trial
- Works with
- Gmail (primary), limited Outlook support
What it does: AI thread summaries (catch up on 30-email threads in one paragraph), natural language inbox search, Ghostwriter voice-matched writing, Tasklet plain-English automations, and smart email bundling.
The catch: Primarily Gmail-focused. Shortwave has begun adding support for non-Gmail providers, but native Microsoft 365/Exchange support is still missing. Like Superhuman, Shortwave is a better email client, not an email automation layer. You still do the work; you just do it with significantly more AI assistance.
SaneBox
An Inbox Filter
SaneBox takes a fundamentally different approach. It works at the server level, analyzing email headers (not content) to sort messages into folders like SaneLater, SaneBlackHole, and SaneNoReplies. You keep your existing email client. SaneBox just makes your inbox quieter.
- Pricing
- $9.49/month (Snack) to $42.99/month (Dinner) billed monthly, $5.42 to $26.58 billed annually · Free trial: 7 days
- Works with
- Any email client
What it does: Works with any email provider and any email client. No app to install. SaneBlackHole is a one-click unsubscribe that actually works. The Do Not Disturb feature holds all email until a set time.
The catch: SaneBox takes 4-6 weeks to fully learn your preferences. It filters and sorts, but it does not draft replies, extract tasks, or track follow-ups. Think of it as a smart filter, not an assistant. From $5.42 a month billed annually ($9.49 monthly), it handles sorting and nothing else.
Spark Mail
A Low-Cost Email Client
Spark is a cross-platform email client at a low price point. It works on Mac, iOS, Windows, and Android, with team features like shared drafts and email delegation. Spark restructured its plans in late 2025, replacing the old Premium tier with Plus and Pro tiers.
- Pricing
- Free / Plus $10/month ($8.25 annual) / Pro $20/month ($16.58 annual)
- Works with
- Gmail, Outlook, iCloud, Yahoo
What it does: AI Compose (write full emails from a short prompt), AI Rephrase (adjust tone), smart notifications that only ping you for important messages, and team email collaboration. The Plus plan includes AI Assistant, 40 AI meeting notes/month, and productivity integrations.
The catch: The AI features are light: Spark is an email client with AI compose, not something that keeps track of what needs you. It is priced for individuals or small teams on a budget.
Spike
Email as Chat
Spike converts email threads into chat-like conversations, which is either brilliant or maddening depending on your workflow. It also bundles in video calls, collaborative notes, and voice messaging, essentially trying to replace Slack and email simultaneously.
- Pricing
- Free / team plans from $6/user/month billed annually
- Works with
- Gmail, Outlook, iCloud, Yahoo
What it does: Conversational email view, built-in video calls and chat, Priority Inbox, and collaborative documents. The free plan includes AI tools and supports a single email address.
The catch: The conversational format does not work for formal business correspondence. If your emails are contracts, proposals, or legal communications, chat-style formatting creates confusion. Spike suits internal teams who want email to feel like messaging.
Fyxer AI
Draft Replies Only
Fyxer AI focuses on two things: auto-drafting replies and organizing your inbox. It reads incoming emails and generates draft responses automatically, which you review and send. It also provides meeting preparation notes and email summaries.
- Pricing
- $37/month (Pro, billed annually) · $49 monthly · Free plan without drafting
- Works with
- Gmail, Outlook
What it does: Proactive draft replies generated without prompting, meeting prep summaries from email context, and spam/newsletter filtering. The Professional plan adds multi-inbox support and CRM integration.
The catch: At $37/month (Pro, billed annually), the price is above alfred_’s $29.99/month while covering less ground. Fyxer writes drafts before you ask and sorts your inbox. alfred_ also drafts replies for your review (email drafting is on by default), and it adds follow-up tracking, to-dos from email, calendar management and a morning brief. Pick Fyxer if writing replies is the bottleneck; pick alfred_ if keeping track is.
Lindy
An AI Teammate in Slack
Lindy now describes itself as an AI teammate. It works in Slack, iMessage and email, connects to more than 1,000 tools, and runs routines you describe in a sentence on a schedule: a daily brief, a weekly report, meeting notes after each call, a draft when an email needs a reply. Email is one of several things it does.
- Pricing
- Free ($50 in credits for 7 days) · Team $29.99/month per user (3,000 credits) · Enterprise custom
- Works with
- Gmail, Outlook
What it does: Inbox management, reply drafts, meeting scheduling and notes, scheduled routines, and requests in Slack or iMessage.
The catch: the credit meter. Team includes 5,000 credits per user per month and Lindy prices everyday asks at 2 to 250 credits each, so a busy inbox can use the allowance before the month ends, and Lindy then pauses until the next cycle. It is also built around a team working in Slack rather than one person’s inbox and calendar. Score: 13/25, re-scored in October 2026 for Lindy’s current AI-teammate product; our earlier score was for its previous agent builder.
Inbox Zero
Open-Source AI Rules for Gmail
Inbox Zero is the open-source entry: AI rules in plain English (“archive newsletters, label invoices, draft a reply to anything from a client”), reply tracking so sent mail awaiting an answer doesn’t vanish, and cold email blocking. The code being public is a real trust advantage in a category that reads your whole inbox, and it earns points on our Follow-up pillar that most clients miss entirely.
- Pricing
- Starter $20/user/month · Plus $35 · Professional $50 · annual saves up to 20% · 7-day trial
- Works with
- Gmail
What it does: Plain-English AI rules, reply tracking, cold email blocker, open-source codebase you can self-host.
The catch: Gmail-only, and per-user pricing climbs fast: Plus at $35/user/month is more than alfred_ while covering email alone with no calendar, no task extraction, no daily brief. The self-host option changes that math for technical users willing to run their own instance.
Microsoft Copilot
Built Into Microsoft 365
If your company runs on Microsoft 365, Copilot is the default answer, and honestly a decent one. In Outlook it summarizes long threads, drafts and rewrites replies, and on newer plans prioritizes your inbox when you open it. Its real strength is reach: the same license works in Teams, Word, and Excel, and it can reference SharePoint documents alongside your mail.
- Pricing
- $30/user/month add-on for enterprise (billed yearly) or Copilot Business from $18/user/month billed yearly (promotional, $21 regular), on top of an existing M365 subscription
- Works with
- Outlook and the full M365 suite
What it does: Thread summaries, draft assistance, inbox prioritization, cross-app context across the entire Microsoft ecosystem.
The catch: Copilot is an assistant you ask, not one that reports back. It does not keep a running list of what needs you, track which sent emails still await replies, or deliver a morning brief; and the license math ($18 to $30 a user a month on top of the M365 subscription itself) only makes sense if your team uses it beyond Outlook. The two can run side by side: Copilot for in-Office work, alfred_ for keeping track of the inbox. Full comparison: alfred_ vs Copilot.
Gemini in Gmail
The Free Button in Gmail
Every Gmail user already has an AI email assistant; it’s behind the Gemini button. It summarizes threads and Help me write produces serviceable drafts, both only when you click. Before paying anyone on this list, spend a week using Gemini deliberately; it establishes your baseline for what a paid tool must beat.
- Pricing
- Free in Gmail; Google AI Plus $9.99/month or Google AI Pro $19.99/month for more
- Works with
- Gmail
What it does: Zero cost, zero setup, solid thread summaries, drafting help inside the compose window.
The catch: Entirely reactive. You click, per thread, every time. No batch summarization, no prioritization, no follow-up memory, nothing happens unless you ask. At 50+ emails a day the clicking is the job. Gemini answers “what does this thread say?”; it has no answer for “what needs me today?” That second question is the entire gap between a free feature and an assistant. Longer treatment: can ChatGPT, Copilot or Gemini manage my email.
Missive
A Shared Team Inbox
Missive addresses a different problem from the rest of this list: several people working one address (support@, sales@). Shared inboxes with assignments and internal comments live next to team chat, and its AI assistant and automations run across all of it, with a bring-your-own-API-key option for AI usage.
- Pricing
- Starter $14/user/month · Productive $24 · Business $36 (billed yearly) · 30-day trial
- Works with
- Gmail, Outlook, IMAP
What it does: Shared inboxes with assignment and collision detection, rules/automations, AI assistant across email, chat and SMS, BYOK for AI.
The catch: Missive is team infrastructure, not a personal assistant. Solo users pay team-tool prices for collaboration features they’ll never touch, and there’s no proactive triage or briefing for an individual’s own mail. If shared inboxes are the actual problem, start with our best shared inbox software comparison where Missive competes on its home turf.
MailMaestro
A Drafting Sidebar for Outlook
MailMaestro is a focused tool: an AI sidebar in Outlook (and Gmail) that composes, replies to, and improves emails, plus thread summaries. For Outlook users who want better drafting without an IT conversation about Copilot licensing, it is the pragmatic middle option, and the free plan is enough to evaluate it honestly.
- Pricing
- Free plan · Pro $12/month billed annually, $15 monthly · 14-day trial
- Works with
- Outlook, Gmail
What it does: Compose/reply drafting, thread summaries, installs from the Microsoft Marketplace in minutes, a free plan.
The catch: Drafting is the whole product. No triage, no task extraction, no follow-up tracking, no briefing. It makes writing faster; the deciding, prioritizing, and remembering stay yours.
Pricing Comparison
| Tool | Free Plan | Entry Paid | Full-Featured | Replaces Your Email Client? | AI Drafts Included? |
|---|---|---|---|---|---|
| alfred_ | 7-day trial | $29.99/mo | From $29.99/mo | No (works alongside) | Yes (on by default, for your approval) |
| Superhuman | Suite Free (no Mail) | $25/mo (Mail Starter, yearly) | $33/mo (Business, yearly) | Yes | Yes (on demand) |
| Shortwave | Free plan + 14-day trial | $30/seat/mo (Business) | $120/seat/mo (Max) | Yes (Gmail only) | Yes (Ghostwriter) |
| SaneBox | 7-day trial | $9.49/mo (Snack; $5.42 yearly) | $42.99/mo (Dinner; $26.58 yearly) | No (server-level filter) | No |
| Spark Mail | Basic features | $10/mo (Plus) | $20/mo (Pro) | Yes | Yes (on demand) |
| Spike | Free plan | $6/user/mo (billed yearly) | $12/user/mo (billed yearly) | Yes | No |
| Fyxer AI | Free plan (no drafting) | $37/mo (Pro, annual) | Team $64/mo annual (pooled credits) | No (works alongside) | Yes (proactive) |
| Lindy | $50 in credits (7 days) | $49.99/mo (Team, 5,000 credits) | Custom (Enterprise) | No (works from Slack and email) | Yes (drafts when a reply is needed) |
| Inbox Zero | 7-day trial / self-host free | $20/user/mo (Starter) | $50/user/mo (Professional) | No (works alongside) | Yes |
| Microsoft Copilot | No (add-on) | $18/user/mo (Business, promotional; $21 regular) | $30/user/mo (enterprise add-on) | No (lives in Outlook) | Yes (on demand) |
| Gemini in Gmail | Yes, built in | $9.99/mo (Google AI Plus) | $19.99/mo (Google AI Pro) | No (lives in Gmail) | Yes (Help me write) |
| Missive | 30-day trial | $14/user/mo (Starter) | $36/user/mo (Business) | Yes (team client) | Yes (on demand) |
| MailMaestro | Free plan | $12/mo annual ($15 monthly) | Custom (Enterprise) | No (sidebar add-in) | Yes (on demand) |
The hidden cost question: do you keep your email client? SaneBox and alfred_ work alongside Gmail/Outlook, no migration. Superhuman, Shortwave, and Spark replace your client entirely. If switching clients is a dealbreaker, your real options are alfred_ (from $29.99/mo for follow-up tracking, calendar and a morning brief), SaneBox (from $5.42/mo billed annually, filtering only), or Fyxer ($37/mo billed yearly for drafts only).
How to Choose the Right AI Email Assistant
| What You Want | Tool | Price | What You Get |
|---|---|---|---|
| Nothing slipping: replies owed, follow-ups, to-dos and calendar in one place | alfred_ | From $29.99/mo | The replies you owe in one list, who you're waiting on when you ask, plus a morning brief |
| The fastest replies: answer client email by text, no app | alfred_ | From $29.99/mo | alfred_ texts you when an email you described arrives; text back and it sends from your own email once you approve |
| A keyboard-driven email client to switch to | Superhuman | $25–$40/mo (Mail) | Keyboard shortcuts, Split Inbox; you process mail by hand |
| A new email client on Gmail | Shortwave | $30–$120/mo | Ghostwriter voice learning, Tasklet automations |
| Passive filtering, keep your current client | SaneBox | $9.49–$42.99/mo | Server-level sorting, works with any email app |
| Cross-platform + team features on a budget | Spark Mail | Free–$20/mo | Shared drafts, delegation, AI compose |
| Chat-style email + messaging | Spike | Free–$12/user/mo | Turns threads into conversations (polarizing) |
| Auto-drafted replies only | Fyxer AI | $37/mo | Proactive drafts + meeting prep summaries |
| Free AI email, zero new tools | Gemini in Gmail | Free | On-demand summaries and drafts inside Gmail |
| AI across your whole Microsoft stack | Microsoft Copilot | $18–$30/user/mo add-on | Outlook summaries + drafts, Teams/Word/Excel context |
| Open-source AI rules for Gmail | Inbox Zero | $20–$50/user/mo | Plain-English rules, reply tracking, self-hostable |
| A shared team address | Missive | $14–$36/user/mo | Shared inboxes, assignments, team AI |
| Better Outlook drafts, nothing else | MailMaestro | Free–$15/mo | Compose/reply sidebar with a real free tier |
If you process 50+ emails/day and replies or follow-ups keep slipping, start with alfred_. At that volume the failure mode is usually specific, and we break it down in important emails keep slipping through the cracks. alfred_ also works as an AI executive assistant for professionals who need email, calendar and tasks kept track of together.
If you like doing email and only want to do it faster, a client like Superhuman costs $25 a member a month billed annually for Superhuman Mail (Starter) or $33 for Business; the suite’s $12 Pro plan doesn’t include Mail. It will not tell you what is still waiting on you.
If budget is the constraint, Spark’s Plus plan at $10/month ($8.25 annual) gives you AI assistance at a low cost. SaneBox at $5.42/month billed annually ($9.49 monthly) adds filtering on top of any client. Shortwave has a free plan, and Business is $30/seat/month on Gmail.
