10 Best AI Email Writers of 2026 (Tested and Ranked)

TL;DR: There is no single "best" AI email writer, because the right tool depends on where your email lives. If you use Gmail and want to stay there, Aeralis and Fyxer lead. If you're open to a new email client, Shortwave or Superhuman. On Microsoft 365? Copilot. On Workspace Business Standard? Help me write is already bundled. The picks below break this down by use case, with real prices and honest tradeoffs.

How I ranked these

I evaluated ten AI email writers against seven things that actually matter in daily use:

1. Does it work inside your existing email, or replace it?
2. Is the pricing honest and the billing flexible?
3. Does it learn how you write?
4. Can drafts cite your actual context (URLs, docs, sources)?
5. How long does a draft take from click to sent?
6. Is your email content stored, or processed in real time?
7. Does it support Gmail, Outlook, or both?

No pay-for-placement here. I run Aeralis, so I am obviously not neutral about it — but the rankings reflect honest fit, and I'll tell you when something else is the better choice.

1. Aeralis — best if email is your main AI pain point

Free tier: 15 emails/month. Pro: $14/month. Business: $29/month. Team: $79/month.

Aeralis is a Google Workspace Add-on. It lives in the Gmail sidebar, reads the thread you're replying to, and writes in the voice it learns from your forwarded sent emails. You can run ten profiles at once with separate writing styles, separate grounding (URLs, Google Search, Maps, document uploads), and separate contexts for different audiences.

What it is not: an inbox manager, a meeting transcriber, or a full email client. If that's what you need, keep reading.

Best for: Gmail users who write a lot of email and want drafts that sound like them. Solo founders, recruiters, sales reps, consultants juggling clients — these are the users who get the most from it.

Outlook support exists (Azure AD add-in), but the Gmail experience is where the tool shines.

Try Aeralis free →

2. Fyxer AI — best if you want email + meeting notes in one tool

Basic: $22.50/month (annual billing). Professional: $37.50/month (annual).

Fyxer is a Chrome extension on top of Gmail. Two things set it apart: it learns your writing style from sent emails, and it bundles Zoom/Teams/Meet transcription. If you're in back-to-back meetings and also writing a lot of email, one subscription covers both.

The downside is the annual lock-in and no real free tier. If your team doesn't do heavy meeting work, you're paying for a feature you won't use.

Best for: Sales teams, recruiters, and consultants whose day is roughly half email and half calls.

3. Superhuman — best if speed matters most

Starter: $30/month. Business: $40/month. No free tier.

Superhuman replaces Gmail with its own client. The thing people really pay for is speed — interactions feel instant, keyboard shortcuts are built into everything, and the onboarding is a one-on-one call with a human who helps you set it up. AI features exist (Instant Reply, summaries), but they were added to keep pace with the market, not to lead it.

Honest read: you're paying a premium for a premium experience. It's not about AI depth.

Best for: Executives and power users who process 100+ emails a day and can justify $30+/month for the speed.

4. Shortwave — best if you're ready to switch clients for AI

Free tier (limited credits). Personal: $9/month. Business: $40/month.

Shortwave was built AI-first. The killer feature is semantic search — you can ask "what did we decide about the Acme pricing" and it finds the thread without needing the exact keywords. AI summaries and drafts are both genuinely good.

The catch: you have to leave Gmail. New app, new shortcuts, new mobile experience. If that's a deal-breaker, it's a deal-breaker.

Best for: People who want a more AI-native email experience and are willing to change clients. Also the cheapest premium AI email option at $9/month.

5. Gmail "Help me write" — best if you're already on Workspace Business Standard

Bundled with Google Workspace Business Standard ($14/user/month) or higher.

This is Google's own Gemini-powered draft tool, built directly into Gmail's compose window. If your org already pays for Workspace Business Standard, you have it — no additional spend.

What you get: acceptable generic drafts. What you don't get: style learning, multiple profiles, grounding on your own documents, or any way to make it sound like you specifically.

Best for: Teams on Workspace Business Standard or higher who want baseline AI drafts without another subscription. If you outgrow it — and most style-conscious writers will — add something on top.

Not available on personal Gmail or Workspace Business Starter.

6. Microsoft Copilot for Outlook — best for Microsoft 365 enterprises

$30/user/month, on top of Microsoft 365 Business Standard ($12.50/user/month minimum).

Copilot is Microsoft's AI layer across their whole suite. For Outlook specifically, it drafts, summarizes, and coaches tone. The real value is breadth: the same subscription gives you AI in Word, Excel, PowerPoint, and Teams, with enterprise compliance controls that M365 customers already know.

Effective cost is around $42.50 per user per month once you factor in the required Microsoft 365 tier. It's not cheap. If email is your only AI pain, that's a lot to pay.

Best for: Organizations already on Microsoft 365 Business Standard or higher who want AI across the whole Microsoft stack.

7. Jace AI — best if you want workflow automation, not just drafts

Individual: $20/month. Professional: $40/month.

Jace is broader than a pure email tool. You get AI drafts, but also auto-labeling, smart inbox rules, a Slack integration, HubSpot sync (Professional), and a chat-style assistant for querying your inbox in natural language.

The trade is that it runs as a separate web app alongside Gmail, so you're switching tabs. If your pain is writing, that extra context-switch is friction. If your pain is cross-channel workflow (email + Slack + CRM), the breadth is worth it.

Best for: Power users handling 100+ emails across email and Slack who want automation beyond drafting.

8. Inbox Zero — best for inbox organization, not writing

Pro: $18/month (annual). Business: $42/month (annual).

Inbox Zero is great at the problem it's built for: triage. Auto-labels, bulk unsubscribe, cold email blocking. AI drafts exist as a secondary feature, but that's not the reason you'd buy it.

If your inbox is 500 unread promotional emails and you can't tell what's important, this fixes that. If your inbox is under control but you hate writing replies, it won't help much.

Best for: People drowning in newsletter/promotional email who need triage more than drafting.

9. Serif AI — best if email delegation is your thing

Pricing: contact sales. No public tiers.

Serif uses a delegation model — you forward emails to an assistant address and it handles tasks asynchronously. The meeting scheduling is genuinely well-done. Everything else feels like a different kind of product than the others on this list.

The pricing opacity is the main obstacle. Most teams want to know what they're paying before the sales call.

Best for: Teams that are fine with asynchronous email handling and have budget approval for sales-led purchasing.

10. Perplexity Email Assistant — only if you already pay for Perplexity Max

Bundled with Perplexity Max: $200/month.

Perplexity added an email assistant to its Max tier, which also includes research features, meeting tools, and smart labels. If you're already a heavy Perplexity user paying for Max, email is included. If you're not, $200/month is wild money to pay for email help.

Best for: Existing Perplexity Max subscribers. Otherwise, one of the first five on this list is a better use of money.

Picks by use case

Personal Gmail, solo user, tight budget. Aeralis free tier. No credit card, 15 emails a month. When you outgrow it, Pro at $14 is cheaper than the alternatives.

Already on Workspace Business Standard. Start with Help me write since it's included. Add Aeralis ($14) on top only if your writers are frustrated by the generic drafts.

Microsoft 365 enterprise, Outlook-only. Copilot for Outlook is the obvious choice. Budget for around $42.50/user/month all-in.

Lots of meetings, Gmail user. Fyxer for email plus transcription in one subscription. Or Aeralis plus a dedicated meeting tool (Otter, Granola) if you want to decouple them.

Premium power user. Superhuman if speed is the thing. Shortwave if AI features are the thing.

Sales or recruiting team. Aeralis for voice-accurate outreach with profiles per segment. Jace if you also need Slack and HubSpot in the mix.

Enterprise drowning in promotional email. Inbox Zero for triage; pair it with any of the writing tools above.

What I didn't recommend

A few things that come up in searches but don't make my list:

• Gmail Smart Compose on its own. Phrase completions only. If you want full drafts, you need something else.
• Outlook's built-in Smart Compose. Same limitation as Gmail's.
• CRM-bundled email AI. Usually generic, rarely good at voice.
• Lavender and Apollo's Magic Write. Solid for sales but narrow in scope.

How to decide

If you want to do this in fifteen minutes: try Aeralis's free tier first. If it clicks, you're done. If not, you've lost nothing and learned what you actually want.

If you want to do it properly, the decision is really just two questions:

1. Am I willing to change email clients? If no, rule out Shortwave and Superhuman.
2. What do I already pay for? If it's Workspace Business Standard, try Help me write before anything else. If it's Microsoft 365, evaluate Copilot.

After that, the choice comes down to whether you want style learning (Aeralis, Fyxer), meeting transcription (Fyxer), or workflow automation (Jace).

Related reading

• AI Email Tools Comparison
• Aeralis vs Fyxer AI
• Aeralis vs Superhuman
• 7 Best Fyxer AI Alternatives
• Alternatives & Comparisons Hub