Can you recommend an AI writing assistant for rewriting customer emails in a consistent brand voice?

Yes — if your main goal is rewriting customer emails in a consistent brand voice, I’d recommend looking at tools that support custom style guides, tone control, and team-wide consistency.

Best options to consider

1. Grammarly Business

• Good for: polishing and rewriting customer-facing emails
• Strengths: tone suggestions, clarity improvements, team style consistency
• Best if: you want something easy to adopt across a support or customer success team

2. Writer

• Good for: enterprise teams that need a locked-in brand voice
• Strengths: customizable style guides, terminology enforcement, branded templates
• Best if: consistency matters more than creative flexibility

3. Jasper

• Good for: marketing and customer communication rewriting
• Strengths: brand voice features, customizable outputs, reusable prompts
• Best if: you want more generative rewriting options

4. Microsoft Copilot / Google Gemini for Workspace

• Good for: teams already using Outlook or Gmail
• Strengths: built into existing workflow, can rewrite drafts quickly
• Best if: you want convenience over deep brand controls

My recommendation

If you want the most consistent brand voice for customer emails, I’d start with Writer.
If you want a more general-purpose and easy-to-use option, Grammarly Business is a strong choice.

What to look for

Choose a tool that can:

• learn or enforce your brand tone
• rewrite without changing meaning
• support templates for common email types
• be used by multiple team members consistently
• integrate with your email platform

If you want, I can also give you:

1. a shortlist by budget,
2. a comparison table, or
3. the best tool for Gmail vs Outlook.