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OffHours for Outlook

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Updated:
1 May 2025
See also:
OffHours for Office 365
SetDeliveryTime for Outlook
DelayOutOfHoursEmails Flow for Office 365

Purpose

This add-in ensures that emails you write after business hours or on weekends are held and sent only at the start of the next business day.

Set your business hours by modifying the recurring appointment named AllowedToSend, located in the AllowedToSend subfolder of your Calendar. This appointment defines when emails are sent immediately versus when they are delayed.

OffHours: the AllowedToSend recurring appointment in the Calendar subfolder

Current version: 1.0.9

The application is a COM add-in compatible only with classic desktop Outlook for Windows. It does not support the new Outlook for Windows. Comparison of classic Outlook (with add-in support) and new Outlook for Windows

Installation

  1. On a client workstation where Outlook is installed, download the OffHours-Demo.zip archive and extract all files.
    Exit Outlook if it is running, then run OffHoursSetup(DEMO).exe and follow the instructions.
  2. Start Outlook. Select File > Options > Add-ins and make sure that OffHours is listed under Active Application Add-ins.
    OffHours addin installation Picture 1
  3. Navigate to the AllowedToSend subfolder of your Calendar folder. Modify the recurring appointment AllowedToSend according to your needs.
    OffHours addin installation Picture 2

Testing

  1. At any time during non-business hours, run Outlook and send a message. Verify that the message is held in the Outbox folder. Enable the Defer Until column in the Outbox. Note that Defer Until is set to the start of the next business day.
    OffHours addin testing Picture 1

    Note: Marking a message as High Importance allows it to be sent immediately, even during off hours.
    OffHours addin testing Picture 2

    Note: To send an already-deferred message immediately, right-click it and click Send now.
    OffHours addin testing Picture 3

  2. At any time during business hours, run Outlook and send a message. Verify that the message is sent immediately and appears in the Sent Items folder.

Demo Version Notes

The demo version adds [OffHours DEMO] to the subject line of each message delayed in sending.

Uninstallation

You can uninstall the add-in via Settings > Apps — labeled "Installed Apps" in Windows 11 or "Apps & features" in Windows 10.

Pricing and Licensing

Licensing policy: The product is licensed per user.
Payments are processed by PayPro Global and BMT Micro.    PayPro Global Customer Support    BMT Micro Customer Support
License type
Price per unit
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BMT Micro logo
Single license
$35.00
Order via PayPro Global  ORDER
Order via BMT Micro  ORDER
Site license
$1,500.00
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Order via BMT Micro  ORDER
Enterprise license
$4,500.00
Order via PayPro Global  ORDER
Order via BMT Micro  ORDER
A Site license covers a single organization at one physical location, with an unlimited number of installations.
An Enterprise license covers all computers across a single organization worldwide, including all branches and remote users.

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