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Best AI Tools for Writing Emails (2026)

Stop staring at blank email drafts. These AI tools write, polish, and personalize professional emails in seconds.

#1 — ChatGPT

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The most versatile option — draft cold emails, follow-ups, apology emails, negotiations, and any other email type from a quick description.

Best for: All email types, tone adjustment, multi-language

#2 — Claude

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Better than ChatGPT for nuanced, sensitive emails — complaints, negotiations, and anything requiring careful tone management.

Best for: Sensitive emails, negotiations, complex situations

#3 — Grammarly

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Doesn't write emails for you, but makes every email you write better — grammar, tone, clarity. Works directly in Gmail.

Best for: Email polish, tone detection, grammar, Gmail integration

#4 — Copy.ai

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Pre-built email templates for sales outreach, follow-ups, and marketing emails. Great for generating variations at scale.

Best for: Sales outreach, templates, email sequences

#5 — Microsoft Copilot

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Draft and reply to emails directly in Outlook with AI. Summarizes long email threads automatically.

Best for: Outlook integration, thread summaries, quick replies

#6 — Wordtune

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Rephrase awkward sentences, adjust formality level, and find better ways to express your thoughts in emails.

Best for: Rephrasing, tone adjustment, clarity improvement

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