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TXTImpact Outlook Add-In – Installation & User Guide (Microsoft 365)

  • Updated

RequiredTXTImpact Omnihub Account

The TXTImpact Outlook Add-In is available only for TXTImpact Omnihub accounts.

  • If you log into your dashboard using https://app.wire2air.com, your account must be migrated to Omnihub before installing this Add-In.

To initiate migration, contact: support@wire2air.com

Quick Start (5 Steps)

QuickInstall + Send Your First Text

  1. Download the manifest XML: Download Manifest (.xml)
  2. In Outlook, open any email → Apps (or …) → Get Add-ins.
  3. My Add-ins → Custom Add-ins → Add from File → select the downloaded XML → Install.
  4. Open any email → click TXTImpact / Wire2Air icon → Messenger opens on the right.
  5. Click New Message → enter number → type message → Send.

Want Outlook Contacts + save to Sent Items? Connect Outlook inside TXTImpact Dashboard (Integrations → Outlook → Connect).

Overview

The TXTImpact Outlook Add-In allows you to send and receive SMS directly from Microsoft 365 Outlook (Online and Desktop).

Before Installation

  • The Add-In works with Microsoft 365 Outlook (Online and Desktop).
  • You do NOT need a Microsoft-hosted email to use the Add-In.
  • If you are NOT connected to Outlook from your TXTImpact dashboard:
    • You will NOT be able to access Outlook Contacts.
    • Sent messages will NOT be stored in your Outlook “Sent Items” folder.

Install TXTImpact Add-In (Individual User)

Note“Add from URL” may not be available

Many Microsoft 365 environments disable Add from URL. Use Add from File instead.

Step 1: Download the Manifest File

Download the TXTImpact Outlook Add-In manifest XML and save it locally (e.g., Downloads folder).

Download TXTImpact Manifest (.xml)

Download and save the manifest XML file locally (example screenshot/illustration)

Step 2: Open Add-Ins in Outlook

  1. Open Outlook (Web or Desktop) and open any email message.
  2. Click the Apps icon (or the … menu).
  3. Select Get Add-ins.


outlook-apps.jpgAdd-in-add-fromfile.jpg

 

Step 3: Install Using Add from File

  1. Select My Add-ins.
  2. Scroll to Custom Add-ins.
  3. Click Add from File.
  4. Select the downloaded .xml manifest file.
  5. Click Install and accept prompts.

Install the add-in using Custom Add-ins → Add from File

After installation, you may need to refresh Outlook or reopen an email for the icon to appear.

Install via Microsoft Admin Center (Organization Deployment – Recommended)

BestAdmin Deployment (No XML file for end users)

If you are an administrator, deploy the add-in organization-wide. This avoids end users downloading the manifest file.

Manifest URL: https://app.txtimpact.com/messenger/outlook/manifest

  1. Log into Microsoft 365 Admin Center.
  2. Go to Settings → Integrated Apps.
  3. Select Upload Custom Apps.
  4. Choose Office Add-in.
  5. Upload the manifest file or paste the manifest URL.
  6. Validate and deploy to users or the entire organization.

Note: Deployment may take up to 72 hours to appear for users.

 

Microsoft Admin Center → Integrated Apps → Deploy Office Add-in (example screenshot)

Launch the TXTImpact Add-In

  1. Open any email in Outlook.
  2. Click the TXTImpact / Wire2Air icon.
  3. The Messenger panel will open on the right-hand side.
     
TXTImpact Messenger panel inside Outlook

Send a Text Message

  1. Click New Message.
  2. Select your Sender Number.
  3. Enter contact name or phone number.
  4. Type your message.
  5. Click Send.

 

Send SMS screen in Outlook Add-In

Connect Outlook for Contacts & Sent Folder Sync

OptionalEnable Outlook Contacts + Save to Sent Items

To access Outlook Contacts and automatically save sent SMS into Outlook “Sent Items,” connect Outlook inside your TXTImpact dashboard.

  1. Login to TXTImpact Dashboard.
  2. Go to Integrations.
  3. Click Outlook.
  4. Click Connect.
  5. Accept Microsoft permissions.

TXTImpact Dashboard → Integrations → Outlook

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Microsoft permission approval screen

Troubleshooting

FixAdd-in Not Appearing

  • Open an email first: In Outlook, add-ins often show only when an email is open (not just the inbox list).
  • Refresh Outlook: Reload the browser tab (Outlook Web) or restart Outlook (Desktop).
  • Wait a few minutes: Microsoft can take 5–15 minutes to surface the icon after install.
  • Check the Apps menu: Click Apps or … and look for TXTImpact / Wire2Air.
  • Confirm install: Go back to Get Add-ins → My Add-ins and verify it’s listed under installed add-ins.
  • Admin deployments: If deployed by Admin Center, it can take up to 72 hours to show for all users.
     

TipContacts Not Showing / Sent Items Not Saving

  • Make sure Outlook is connected in TXTImpact Dashboard: Integrations → Outlook → Connect.
  • After connecting, close and reopen the add-in panel in Outlook.
     

Account Still using app.wire2air.com?

If you still log into https://app.wire2air.com, migration to Omnihub is required before the add-in will work properly.
TXTImpact OmniHub dashboard login: https://app.txtimpact.com

Contact: support@wire2air.com

Need Help?

For migration or installation assistance, contact:
support@wire2air.com

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