Best Outlook Translator Add-Ins for Real-Time Email Translation

1. Microsoft Translator (built into Outlook)

Microsoft’s built-in translator is the easiest place to start for real-time translation in Outlook.

Best for:

People who want quick translations without installing extra software.

Key Features of MS Translator Add-in:

How it works:

Outlook notices the language of an incoming message, prompts you to translate, and can translate the whole message or just selected text.

Where it runs:

Works across Outlook web, desktop, and mobile so your settings stay the same.

Privacy:

Translations are handled securely so your email content stays private.

Why choose Microsoft Translator:

If you want simple, reliable real-time translation in Outlook without fuss, this is usually the best pick.

How to use Microsoft Translator:

Look in Outlook settings under translation or message handling. If it’s not visible, check Outlook Add-ins or Microsoft AppSource and add it. This is a good first step before trying third-party tools.

2. DeepL for Outlook — top choice for accuracy

DeepL is known for producing high-quality, natural-sounding translations and is popular for business emails.

Best for:

Users who need the most accurate translations for professional communication.

Key features of DeepL:

DeepL Add-on - Free vs paid:

There’s a free version with limits and paid plans for expanded use and security.

When to pick it:

If your messages must be precise and clear, DeepL is the Outlook translation plugin to try.

Install it from AppSource or DeepL’s site, then enable the add-in inside Outlook. Once active, you can translate text instantly while writing or reading emails.

3. Intento Translator for Outlook — flexible, multi-engine option

Intento is aimed at businesses that want to choose or compare different translation engines inside Outlook.

Best for:

Teams that need flexibility and want to route translations to the most accurate engine for each job.

Intento Translator Key features:

Connects to multiple engines (DeepL, Google, Amazon); smart routing picks the best engine; lets admins control cost and quality settings.

Why enterprises like it:

You can balance price and accuracy and switch providers without changing workflow.

How to get it:

Sign up for a license on Intento’s site and add the Outlook add-in.

Use Intento when you need advanced control over which engine translates which content, or when you want to compare results across services.

4. Wordbee Translator — free plus human post-editing

Wordbee mixes machine translation with your own translation memory and offers optional human review.

Best for:

Small teams or freelancers who want a free option and the ability to request human editing.

Key features of Wordbee Plug-in:

Translates email body and attachments; stores past translations to improve results; offers paid human post-editing when needed.

How to get it:

Create an account and install the add-in, then sign in from Outlook.

Choose Wordbee if you want basic automatic translation plus the option to upgrade to human quality on specific messages.