Best Hi AI Alternatives in 2026

Writemail.ai is an AI-driven email writing tool that generates personalized and effective emails with options for tone, language, emojis, and recipient's age or cultural background.

Harveyai is a native AI email assistant tool that helps professionals write better contextualized email replies faster with technical support and free trial.

Quickmail AI is an AI-driven email assistant that generates professional emails quickly from brief prompts. It enhances productivity by reducing writing time and allows users to customize content to fit their style, supporting efficient email management.

Voilà AI Assistant is a cross‑platform browser extension, desktop, and mobile app that uses GPT‑5 to summarize, rewrite, translate, and auto‑reply to emails, chats, PDFs, spreadsheets, and YouTube transcripts, while correcting spelling, grammar, tone and generating images from text.

Instantly.ai is a cold email software that uses AI technology and personalization to increase response rates and drive new business.

Hix.ai is a versatile AI writing platform featuring tools like Articlegpt and Browsergpt for optimized article generation and smooth web integration, respectively, enhancing writing productivity and search engine optimization.

Canary Mail unifies multiple email accounts across Mac, iOS, Android, and Windows in a single inbox. AI drafts replies, summarizes threads, auto‑categorizes mail, and offers read receipts, snooze, templates, and secure PGP/HIPAA‑compliant encryption for enterprise‑grade privacy.

AI Mail Assistant is a Gmail add‑on that uses GPT‑4o to automate email tasks: it generates concise replies, summarizes long messages, translates 13 languages, provides grammar checks, auto‑labels and archives emails, and flags tone issues.

Mailgenerator.ai is an AI Email Generator that streamlines the process of creating personalized, professional emails. Users can specify the email's purpose, tone, and length for quick and efficient communication.

Replyio is a Chrome extension that auto‑generates AI replies and summaries for Gmail, Outlook, LinkedIn, and Twitter. It offers customizable LinkedIn templates, bulk messaging with personalization, tone‑selected Twitter responses, and local data encryption.

HiWriter is an AI-powered email generator that creates personalized and appropriate emails with various features and supports multiple languages.

MailReply streamlines email management by crafting contextual responses to your incoming emails, saving time and adding a professional touch to your email correspondence. Compatible with both Windows and MacOS, MailReply generates context-aware email responses and allows for customization to match your preferences.

AI Email Writer uses OpenAI models to draft concise, persuasive emails. Users select preset prompts or create custom ones, then personalize with brand details. It suggests subject lines, edits tone, length, grammar, and translates into 36 languages.

PulseMail is an AI-powered email assistant that optimizes inbox management through smart responses, prioritization, meeting handling, and automation. It provides personalized messages, analytics, and seamless integration with existing tools for enhanced communication efficiency.

Serif streamlines email management by automating replies, scheduling, and organizing messages, reducing processing time by up to 50%. It integrates with Gmail and Outlook, allowing efficient task delegation and easy access to pre-written responses.

Boost your email writing efficiency with Email Whisperer, an AI tool for Gmail and Outlook. Enhance clarity, fix errors, and personalize your tone for error-free, customized emails. Speed up your workflow and automate email composition effortlessly.

AI Mail Assistant integrates with Gmail to auto‑generate replies, summarize threads, correct grammar and tone, translate into 13 languages, and flag ethical concerns—all without an OpenAI account—saving professionals time and improving email clarity.

AI Email Writer utilizes GPT-4 technology to accelerate email composition, offering customizable templates and smart suggestions for Gmail and Outlook. It allows users to adapt writing styles, improving productivity while maintaining effective communication for various contexts.

Inbox AI is a voice-driven automation tool for macOS that streamlines email management and task processing. It integrates with Apple Mail for smart actions, supports custom voice assistants, and ensures privacy through on-device processing.

Mails.ai automates cold‑email campaigns—creating, sending, and scheduling follow‑ups—while supporting unlimited Gmail, Outlook, Zoho, or custom SMTP accounts. It verifies addresses, warms mailboxes, generates personalized AI copy, rotates inboxes for deliverability, tracks contacts, reports, and offers team collaboration.

EmailTriager automatically organizes Gmail, drafts replies that match your style, and trains on local data. It installs with one click, shows draft responses in the inbox for quick review, and keeps all communications private with third‑party security validation.

Shortwave is an AI‑powered platform that unifies email and future messaging tools, granting controlled read/write AI access to streamline drafting, filtering, and insight extraction, boosting daily workflow productivity across business teams.

Fyxer streamlines email management by auto‑labeling and filtering spam, generating draft replies in your voice, summarizing meetings, and syncing Gmail/Outlook calendars. It supports single/multi‑inbox setups for teams, cutting admin time.

The AI Email Writer tool uses GPT-3 technology to simplify email communication and provides chatbot-powered templates for specific purposes.

Reply.io automates personalized cold email and LinkedIn outreach, using AI-driven customization and real‑time B2B contact data. It offers multichannel sequences, inbox‑optimization tools, API integration, and meeting‑scheduling to streamline lead qualification and accelerate sales pipelines.

Dear Ai is an AI-powered tool that simplifies letter writing by providing personalized templates and tone control. With features like scheduling and upcoming integrations for social media and handwritten cards, it saves time while maintaining authenticity.

Beehiiv AI is an AI-powered tool for newsletter operators, offering a writing assistant, AI text tools, AI image tools, and seamless translation. It helps create professional newsletters with less effort.

HiJiffy Guest Communications Hub delivers real‑time AI responses to guest inquiries across web, social media, and WhatsApp. It syncs with PMS to automate pre‑check‑in, key distribution, room updates, and virtual concierge services, reducing call volume and streamlining operations.

Emilio, the AI email assistant, streamlines email management by prioritizing important emails, summarizing threads, and assisting with email drafting. Save time, achieve inbox zero, and boost productivity effortlessly.