Best AI tools for email

22 tools in the Writing category, filtered to email.

All Writing →

Jasper

Writing · Multi-model (OpenAI / Anthropic via API)

7.6

Marketing-team-focused AI copywriter and content workflow.

Paid· $49+/mo per seat (Creator); $69+/mo Promarketing copybrand voice

Copy.ai

Writing · Multi-model (OpenAI / Anthropic via API)

7.2

Templated AI copywriter for blogs, ads, and outbound emails.

Freemium· Free tier; Pro $36/mo; Team $186/moadssocial

Anyword

Writing · Multi-model

AI marketing copy platform that scores and predicts content performance before you publish.

Paid· Starter $49/mo; Data-Driven $99/mo; Business & Enterprise custom; 7-day free trial (2,500 words)ad-copyemail-marketing

Compose AI

Writing

Chrome extension that adds Gmail-style AI autocomplete to virtually any text field in the browser.

Freemium· Free tier; Premium paid (pricing on signup)email-autocompleteai-writing-assistant

EmailTriager

Writing · Proprietary (True Voice, per-user fine-tuned)

Background AI that drafts Gmail replies in your own voice while you sleep.

Paid· Pricing not publicly listed; requires signupemail-draftinginbox-triage

Fynk

Writing

AI-assisted contract lifecycle management with eIDAS-grade e-signatures and risk flagging built in.

Paid· Free trial; pricing on requestcontract-managemente-signature

GPT for Gmail

Writing · Multi-model (GPT-4o, Claude, Gemini, Mistral, Perplexity)

Multi-model AI sidebar that drafts, translates, and summarizes inside Gmail.

Freemium· Free tier with paid premium featuresemail-draftingemail-summarization

GPT for Sheets

Writing · Multi-model (GPT, Claude, Gemini, Grok, DeepSeek, Mistral, OpenRouter)

Bulk AI prompts inside Google Sheets, Docs, Slides, Forms and Gmail with 50+ frontier models.

Freemium· Free trial without API key; paid tiers for higher usagebulk-promptingspreadsheet-automation

HyperWrite

Writing · Multi-model (undisclosed)

Browser-based AI writing assistant with autocomplete, persona-matching, and integrated research citations.

Freemium· Free tier; Premium $19.99/mo; Ultra $44.99/mo (annual ~20% off)autocompleteemail-drafting

Jacquard (formerly Phrasee)

Writing · Proprietary 'Language2' architecture

Enterprise AI copywriting platform that generates and optimizes brand-compliant marketing messages at scale.

Enterprise· Custom enterprise pricing; book a demoemail-subject-linesmarketing-copy

Jetwriter AI

Writing · Multi-model (GPT-5, Claude Opus/Sonnet, Gemini Pro)

Browser-based AI writing assistant that lives in Gmail, WhatsApp, LinkedIn, and Outlook and learns your past replies.

Freemium· Free tier; paid plans unlock premium models and Gmail learningemail-draftinggrammar-fixing

Jetwriter AI

Writing · Multi-model (GPT-5, Claude Opus/Sonnet, Gemini Pro)

Multi-model AI writing assistant that lives inside Gmail, LinkedIn, WhatsApp Web, and any other tab.

Freemium· Free to try; paid plans on pricing pageemail-draftingreply-generation

Lavender

Writing · Multi-model (OpenAI + fine-tuned in-house LLMs)

AI email coach that grades and rewrites sales outreach in real time, inside your inbox.

Freemium· Free Starter tier; paid Pro and Teams plans (per seat, contact sales for Teams)sales-emailcold-outreach

Lex

Writing · Multi-model (GPT-4.1, Claude)

Google Docs-style writing app with an LLM sidekick wired into every sentence.

Freemium· Free tier; Lex Pro paid (price not public); Teams add-onlong-form draftingeditorial feedback

Merlin AI

Writing · Multi-model (GPT-4o, Claude 3.7, Gemini 2.5, Llama 3.1, Mistral, Deepseek)

Browser-based multi-model AI assistant that puts GPT-4, Claude, and Gemini one keystroke away on any webpage.

Freemium· Free tier; Pro around $19/monthwebpage-summarizationyoutube-summaries

PaletteBrain

Writing · OpenAI (BYO key); Azure OpenAI supported

macOS keyboard launcher that pipes selected text in any app to ChatGPT via your own OpenAI key.

Paid· Personal $29 one-time (early); Family $99 one-time; Team custom. BYO OpenAI key.inline-rewritingai-shortcuts

PressPulse AI

Writing

AI-curated HARO and journalist-query matching with auto-drafted pitches for PR-hungry experts.

Paid· Pro $36/mo; Agency $80/mo + $39/profile; 7-day free trialpr-outreachharo-monitoring

ProWritingAid

Writing · Multi-model (proprietary + LLM-assisted features)

AI-powered writing coach and manuscript editor built for fiction authors and long-form writers.

Freemium· Free tier; Premium ~$30/mo or ~$120/yr; Premium Pro and lifetime licenses availablefiction-editingmanuscript-analysis

RapidTextAI

Writing

Budget AI copywriting workspace with 45+ templates for blogs, ads, and ecommerce listings.

Freemium· Free 100-copy trial; Pro $10/mo or $100/yrblog-writingproduct-descriptions

Rytr

Writing · Undisclosed

Budget AI writing assistant covering 40+ short-form copy use cases with a usable free tier.

Freemium· Free 10k chars/mo; Unlimited $7.50/mo; Premium $24.16/moshort-form-copyemail-writing

Seventh Sense

Writing · Proprietary engagement models

AI send-time optimization and orchestration layer that sits on top of HubSpot and Marketo.

Paid· From $400/mo (HubSpot, 25K contacts); Marketo custom from 150Ksend-time-optimizationemail-deliverability

WritingMate.ai

Writing · Multi-model (GPT-4, GPT-3.5, Claude)

Browser-side AI copilot that drops GPT-4 and Claude into Gmail, LinkedIn, and any web text field.

Freemium· Free tier with paid premium upgradeemail-draftingrewriting