Best AI Email Assistant for Gmail, Outlook & More — 2026 Buyer’s Guide

Reliqus Marketing

26 December 2025

Ai Tools
By Priti Gupta
Marketing Director

In today’s fast‑paced digital world, managing a crowded inbox can feel like a full‑time job. That’s where an AI email assistant comes in. Whether you’re sending business proposals, following up with clients, or simply trying to stay on top of daily correspondence, the right tool can save you hours every week.

In this guide, we’ll walk you through some of the best AI email assistant tools available in 2026 — covering everything from free options to premium suites for heavy users. We’ll look at what each tool does best, what to watch out for, and who it’s ideal for. (Yes — we even compare Gmail and Outlook‑friendly tools.)

How We Picked the Tools

We chose tools that:

  • Offer real AI‑powered drafting, replying, or inbox‑management features, not just basic grammar fixes.
  • Support popular platforms like Gmail and/or Outlook.
  • Cover a range of use‑cases: individual users, teams, outreach/email marketing, and busy professionals.
  • Offer a mix of free, affordable, and premium pricing to fit different budgets.

Top AI Email Assistants for 2026

Here’s a breakdown of the leading AI email tools, including specs, pros, cons, and pricing.

1. Mailmeteor

Mailmeteor

Best for: Quick and polished email drafts for Gmail users 

Specifications:

  • Integrates directly with Gmail
  • Generate AI-powered email drafts in seconds
  • Supports bulk email personalization
  • Google Workspace compatibility

Pros:

  • Easy-to-use Gmail add-on
  • Saves time with pre-written email templates
  • Personalization at scale

Cons:

  • Limited to Gmail only
  • Advanced features require a premium plan

Pricing:

  • Free tier available
  • Paid plans start at $9/month

If you’re also exploring other productivity software, you may want to review this curated list of the best free AI tools for business and marketing workflows.

2. AI Email Assistant for Outlook | Microsoft 365

Microsoft 365 AI Email Assistant for Outlook

Best for: Outlook users who want AI-driven email suggestions within Microsoft 365

Specifications:

  • Built into Microsoft 365
  • Suggests email content & improves clarity
  • Smart meeting and scheduling suggestions

Pros:

  • Native integration with Outlook
  • Ideal for corporate environments
  • Improves professional tone

Cons:

  • Only available in Microsoft 365
  • Limited AI customization

Pricing:

  • Included with Microsoft 365 subscription ($6.99–$22.99/month)

3. Friday AI Email Writer

Friday AI Email Writer

Best for: Mobile users on iOS looking for AI-powered email drafting 

Specifications:

  • iOS app for AI-generated email drafts
  • Smart email suggestions and follow-ups
  • Works with Gmail and other email clients

Pros:

  • Mobile convenience
  • Quick drafts on the go
  • User-friendly interface

Cons:

  • Limited to iOS devices
  • May require an internet connection for full AI capabilities

Pricing:

  • Free trial available
  • Subscription starts at $7.99/month

4. AImReply

AImReply

Best for: Free AI email writing solution for professionals and small teams 

Specifications:

  • Generates emails quickly
  • Templates for professional communication
  • Web-based, works with any email client

Pros:

  • Completely free
  • Quick email composition
  • Simple, clean interface

Cons:

  • Fewer advanced features than premium tools
  • No mobile app

Pricing: Free

5. MailMaestro

MailMaestro

Best for: Professionals who want a magical AI assistant for multiple email platforms

Specifications:

  • AI email assistant with smart drafting
  • Template library & personalization
  • Integrates with Gmail, Outlook, and others

Pros:

  • Highly intuitive
  • Suitable for both Gmail and Outlook
  • Offers time-saving automation features

Cons:

  • Limited reporting or analytics
  • Premium plan needed for team usage

Pricing: Starts at $12/month

6. Reply.io

AI Sales Email Assistant – Reply io

Best for: Sales teams looking to automate outbound email sequences 

Specifications:

  • AI email drafting and sequencing
  • Personalized outreach suggestions
  • Analytics and tracking included

Pros:

  • Helps boost response rates
  • Great for cold email campaigns
  • Automation saves significant time

Cons:

  • Mainly for sales teams, not general email use
  • Pricing can be high for small teams

Pricing: Starts at $70/month

7. Perplexity AI

Perplexity AI

Best for: Users who want an AI assistant that answers questions and drafts emails 

Specifications:

  • AI assistant for general use and email writing
  • Knowledge-based AI recommendations
  • Can summarize and compose emails

Pros:

  • Versatile beyond email writing
  • Free to use for basic features
  • Quick and accurate suggestions

Cons:

  • Less email-focused than specialized tools
  • Interface may be complex for beginners

Pricing: Free basic access; premium features vary

8. Missive

Missive

Best for: Teams collaborating on emails in real-time 

Specifications:

  • Shared inbox and email threads
  • AI-powered draft suggestions
  • Integrates with Gmail, Outlook, and other email providers

Pros:

  • Excellent for team collaboration
  • Combines chat and email
  • AI improves workflow efficiency

Cons:

  • Can be overwhelming for solo users
  • Subscription required for advanced features

Pricing: Starts at $15/month

9. Lindy AI Email Assistant

Lindy AI Email Assistant

Best for: Free-to-try AI email assistant with quick setup 

Specifications:

  • AI-generated email drafts
  • Minimal setup required (30 seconds)
  • Supports multiple email platforms

Pros:

  • Easy and fast setup
  • Free trial available
  • Supports Gmail and Outlook

Cons:

  • Limited customization options
  • Advanced features require a subscription

Pricing: Free trial, paid plans available

10. Shortwave

Shortwave

Best for: Professionals seeking automation of their entire inbox workflow 

Specifications:

  • Email AI assistant plus inbox automation
  • Smart categorization and follow-ups
  • Supports multiple email clients

Pros:

  • Saves time on repetitive tasks
  • AI-powered organization
  • Great for high-volume inbox management

Cons:

  • Learning curve for new users
  • Some features behind a paywall

Pricing: Free basic plan, paid from $10/month

11. Superhuman

Superhuman

Best for: Power users who want speed, AI, and email productivity combined 

Specifications:

  • AI-powered drafting and email management
  • Works across multiple platforms
  • Keyboard shortcuts for efficiency

Pros:

  • Fast, sleek interface
  • AI boosts productivity
  • Comprehensive email management tools

Cons:

  • Expensive compared to other AI tools
  • Invitation-only sign-up

Pricing: $30/month

Why Businesses Choose Reliqus Consulting

Many of these AI email assistants are powerful—but tools alone don’t guarantee results. Strategy matters. At Reliqus Consulting, we help businesses combine AI tools with proven email marketing frameworks to generate leads, nurture prospects, and scale outreach effectively.

Our team supports:

  • AI-powered email marketing strategy
  • B2B lead generation workflows
  • Content and automation consulting
  • Funnel optimization

If you’re planning to integrate AI email tools into a larger marketing strategy, you can

Book a free consultation or contact our team to discuss your goals

Final Thoughts

AI email assistants are transforming how professionals write, manage, and scale email communication. From Gmail users looking for quick drafts to sales teams running complex outreach, there’s an AI tool for every workflow and budget.

When combined with the right strategy, AI email tools can:

  • Save hours of manual work
  • Improve email quality
  • Increase engagement and replies
  • Support long-term lead generation

Choose the tool that fits your needs—and pair it with smart email practices for the best results.

FAQ

Q1. What is an AI email assistant?

It’s a tool that uses artificial intelligence to draft, suggest, and optimize email content automatically.

Q2. Can AI email assistants work with Gmail and Outlook?

Yes! Many tools like MailMeteor, Microsoft AI Assistant, and Lindy AI support both platforms.

Q3. Are AI email assistants safe for sensitive information?

Most reputable tools encrypt data and comply with privacy standards. Always review privacy policies before use.

Q4. Do AI email assistants replace human writing? 

No. They assist and accelerate email composition, but human review ensures tone and accuracy.

Q5. Are free AI email assistants effective?

Free tools like AImReply can handle basic email drafting, while paid options offer advanced features and integrations.

Q6. How do I choose the right AI email assistant? 

Consider your email volume, preferred platform, budget, and whether you need team collaboration features.

Priti Gupta

Marketing Director at Reliqus

She has worked on 100+ Digital Marketing projects, including a wide array of Content writing, SEO, Copywriting, Social media & Paid ads.