--- title: Ensure Email Delivery with IT Allow List description: How to ensure emails from Headcount are not filtered or blocked by your corporate IT firewall --- [Skip to content](https://kb.headcount.io/ensure-email-delivery-with-it-allow-list#main-content) English Show submenu for translations [More support](https://kb.headcount.io/kb-tickets/new?hsLang=en) ![headcount-logo-text-light-bg-212x48-white-bg](https://kb.headcount.io/hs-fs/hubfs/Headcount%20Logos/headcount-logo-text-light-bg-212x48-white-bg.png?width=212&height=48&name=headcount-logo-text-light-bg-212x48-white-bg.png) Open main navigation Close main navigation - English Show submenu for translations - [More support](https://kb.headcount.io/kb-tickets/new) - [Contact us](https://kb.headcount.io/kb-tickets/new) [Contact us](https://kb.headcount.io/kb-tickets/new?hsLang=en) How can we help you? - There are no suggestions because the search field is empty. 1. [Knowledge Base](https://kb.headcount.io/?hsLang=en) 2. [Getting started](https://kb.headcount.io/getting-started?hsLang=en) 3. [System Test](https://kb.headcount.io/getting-started?hsLang=en#system-test) # Ensure Email Delivery with IT Allow List ## Prevent Emergency Communication Email from Being Blocked or Filtered by Your Corporate IT Send these email allow list instructions to your IT department > *--- > Please add the following email addresses to an allow list on our mail server as they will be sending emergency communications and their timely delivery may be critical.* > > - - *\*@*[*mail.headcount.io*](http://mail.headcount.io/) > - *\*@*[*headcount.io*](http://headcount.io/) > > \---   To use email messaging effectively in emergencies, we need to add emails from Headcount to your corporate email allow list or they risk being blocked or filtered to spam or other folders. - [Getting started](https://kb.headcount.io/getting-started?hsLang=en#main-content) - [System Test](https://kb.headcount.io/getting-started?hsLang=en#system-test) - [Badge Scanner](https://kb.headcount.io/getting-started?hsLang=en#badge-scanner) - [Training](https://kb.headcount.io/training?hsLang=en#main-content) - [Admin](https://kb.headcount.io/training?hsLang=en#admin) - [Group Leader](https://kb.headcount.io/training?hsLang=en#group-leader) - [General Population](https://kb.headcount.io/training?hsLang=en#general-population) - [FAQs](https://kb.headcount.io/faqs?hsLang=en) - [General](https://kb.headcount.io/general?hsLang=en) [![Headcount (1)](https://kb.headcount.io/hs-fs/hubfs/Headcount%20Logos/Headcount%20(1).png?width=424&height=192&name=Headcount%20(1).png "Headcount (1)")](http://Headcount.io) 123 Waverly Pl., Boston, MA 02135 [mailto:hello@headcount.io](mailto:hello@headcount.io) Copyright © 2025, Headcount - the evacuation app