No one likes email, but we keep making it worse. Most leaders spend entire mornings trapped in their inbox, clicking through message after message, losing focus on anything that matters. Every ping breaks your concentration, every reply spawns three more messages, and before you know it, lunch arrives and you've accomplished nothing important.
AI email writers change this completely. They draft messages for you, flag what needs attention, and quietly delete the junk while you're doing real work. Teams using tools like Superhuman get back 4 hours every week, reply 12 hours faster, and handle twice the volume without breaking a sweat.
When your day has exactly 24 hours, getting four of them back feels like magic. These seven apps we'll cover prove that drowning in email isn't inevitable.
What makes an AI email writer "the best"
The best tools disappear into your workflow. They cut inbox time without making you sound like a robot. These smart tools use large language models to write, summarize, and personalize messages instantly, giving busy leaders space to focus on work that moves the needle instead of crafting replies to routine questions.
Why does this matter? Smart drafting, conversation summaries, and auto-suggested replies save hours each week for people managing hundreds of messages. When every minute counts, the right tool transforms email from quicksand into something useful.
Great tools excel in four areas:
- Seamless integration - They work naturally with Gmail or Outlook. Tools like Superhuman eliminate app-switching and keep you in flow.
- Inbox management - Features like automatic sorting, snoozing, and conversation summaries clear clutter before it steals focus.
- Sophistication - Tone control, brand voice templates, and context-aware drafting ensure messages sound like you while keeping the email format professional.
- Easy adoption - Tools requiring heavy setup often fail. Intuitive interfaces speed adoption while confusing dashboards slow teams down.
When tools excel across these areas, they don't just write better emails. They help you respond faster, reach inbox zero regularly, and redirect energy toward work that counts.
Best AI email writers at a glance
Here's how to choose.
- Speed matters most? Superhuman delivers the fastest email experience ever built.
- Live in Google Workspace? Try Gemini first.
- Deep in Microsoft? Copilot Pro feels natural.
Note: Superhuman works seamlessly with these 2 email platforms
Each tool solves specific problems: better search, personalized outreach, quick summaries, and brand consistency. Match the tool's strength to your biggest headache.
Superhuman: Best for blazing-fast drafting & team productivity
Superhuman learns how you write to draft replies that match your tone and context. Instead of typing from scratch, you edit intelligent drafts.
Key features that save time:
- Split Inbox moves newsletters and notifications away from important messages
- Instant Reply provides one-click responses for quick questions
- Auto Summarize turns long email chains into single sentences
- Shared Conversations let teams collaborate on emails without switching apps
- Real-Time Read Statuses show when recipients open messages
Teams respond 12 hours faster and handle twice as many emails. This way, you get back 4 hours weekly.
Gemini for Gmail: Best for Google Workspace power users
Gemini sits inside Gmail and uses your Google Workspace data to write context-aware replies. The "Help me write" button pulls information from your conversations, calendar, and Drive files to create relevant responses.
What it does for you:
- Context-aware drafting that references your existing conversations and files
- One-click summaries that turn long email chains into key points
- Meeting creation and file referencing without leaving Gmail
- Automatic cc/bcc suggestions to keep stakeholders informed
Since Google builds it, there's no setup required, and your data stays within Workspace security. However, it only works in Gmail and has limited customization compared to standalone tools.
Gemini is bundled into Google Workspace Business and Enterprise plans, making adoption cost essentially zero if you already use Workspace.
Choose Gemini if Gmail is your primary inbox and you want intelligent help that understands your Google ecosystem.
Microsoft Copilot Pro for Outlook: Best for seamless Outlook integration
Copilot Pro works inside Outlook, using your Microsoft 365 data to draft, polish, and summarize emails. It understands your company schedules, project files, and previous conversations to create relevant replies.
How it helps:
- Intelligent drafting from simple prompts like "thank the team, confirm next steps"
- Email summarization that highlights decisions and action items from long chains
- Enterprise security with data never leaving Microsoft's cloud
- No setup required since it's built into Outlook
Copilot Pro is sold as a per-user upgrade on existing Microsoft 365 plans, making IT activation simple. Perfect for organizations already running on Microsoft 365.
The limitation is requiring an eligible Microsoft 365 subscription, and some mobile clients lack full features.
If your company runs on Microsoft 365, Copilot Pro offers the fastest path to better email productivity.
Shortwave: Best for AI email search & organization
Shortwave transforms email search and organization. Instead of hunting through pages of results, you ask questions in natural language and get instant answers. Need that shipping quote from last month? Just ask.
Key capabilities:
- Natural-language search that understands full questions and vague descriptions
- Smart summarization that turns long conversations into single paragraphs
- Chat-style interface that groups emails into easy-to-follow conversations
- Team collaboration with @-mentions and shared labels
Shortwave works with Gmail and offers generous free plans for personal use. Paid tiers unlock larger search histories and team features.
The trade-off is a modern interface that takes time to learn, and currently, Gmail-only support.
Choose Shortwave if finding information in your inbox is your biggest bottleneck.
Lavender: Best for hyper-personalized, high-impact emails
Lavender coaches your email writing in real-time, analyzing over 100 signals including tone, length, and spam triggers. It helps you write emails that get opened and replied to.
What it does:
- Real-time scoring that improves as you write
- Personalization helps by using LinkedIn profiles and public data
- Spam detection that flags risky words before sending
- Deliverability checking for throwaway emails
The Chrome extension works in Gmail and Outlook, turning writing into a game with live feedback. Teams see measurably higher reply rates within days, with customers reporting significant improvements once scores exceed 90.
Lavender focuses solely on writing quality, so you'll need separate tools for inbox management.
Pricing starts free with paid tiers for full personalization and team analytics.
Perfect for sales teams, recruiters, and marketers who need every outreach email to perform.
MailMaestro: Best for rapid responses & conversation summaries
MailMaestro reads incoming emails and provides instant summaries plus ready-to-send draft replies. One tap puts the response in your compose window, eliminating the need to reread long conversations.
How it speeds up email:
- Sharp summaries that turn long email chains into action items
- One-click drafts that match conversation context and tone
- Mobile app for quick responses while traveling
- A browser extension that works in Gmail and Outlook
The tool focuses on speed over customization, so specialized workflows may need manual adjustments. It follows a freemium model with paid tiers for higher daily limits.
Perfect for busy executives and anyone managing dozens of email conversations simultaneously.
If cutting response time is your main goal, MailMaestro delivers without adding complexity.
Jasper: Best for brand-consistent templates at scale
Jasper ensures every email sounds like your brand. The writing editor learns your style guidelines and applies them to everything from quick nurture emails to complex newsletter campaigns.
Key features for marketers:
- Brand voice consistency across all team members and campaigns
- Template library with dozens of ready-to-use prompts for different goals
- Multilingual content generation without extra plugins
- Style guide training that maintains tone and messaging standards
Jasper works as a web app outside your inbox, so you create content there and then paste it into your email platform. This extra step keeps your inbox clean but requires moving between tools.
Pricing scales with team size and features, making it suitable for growing marketing departments.
Perfect for marketing teams and agencies managing multiple brands who need every message to sound unmistakably on-brand.
Recap: Which AI email writer is right for you?
Your inbox is unique, so the best solution depends on what slows you down most.
To choose, start with your daily workflow. Work in Gmail all day? Gemini or Superhuman will feel seamless. Draft sales or marketing emails requiring a custom tone? Superhuman or Jasper provides the right voice. Drowning in massive conversations? Shortwave or Superhuman lightens the load.
Budget matters, so test free trials where available and experiment with each tool on real messages before committing.
