---
title: "Receiving no Invitation Email"
slug: "receiving-no-invitation-email"
description: "Troubleshoots missing InOne invitation emails, covering spam folders, mail server whitelisting, firewall blocks, and how to resend an expired invitation."
tags: ["how to whitelist insider", "invitation email", "issues with inbox", "mail servers", "receiving no invitation email", "whitelist insider email server"]
updated: 2026-05-25T17:41:15Z
published: 2026-05-25T17:41:15Z
canonical: "academy.insiderone.com/receiving-no-invitation-email"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://academy.insiderone.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Receiving no Invitation Email

If you [invite a user](/docs/invite-a-new-user), but they do not receive their invitation, these topics will help you find out what is wrong and resend the invitation accordingly:

- [Basic check](/v1/docs/receiving-no-invitation-email#basic-check)
- [Mail Servers or Firewalls](/v1/docs/receiving-no-invitation-email#issues-with-mail-servers-or-firewalls)
- [Inbox](/v1/docs/receiving-no-invitation-email#issues-with-your-inbox)
- [Resending the invitation](/v1/docs/receiving-no-invitation-email#resend-invitation)

## Basic Check

Before you go for a support ticket and contact the Insider One team, we highly suggest you check whether;

- The **Administrator** role types the email address correctly while sending the invitation.
- The invitation email is in your junk, spam, or trash folder.
- You have enabled filters, sorting, or rules for your inbox.
- Your email forwarding setting is active.
- Your email inbox has available storage to receive new emails.

## Issues with Mail Servers or Firewalls

- Check your blocked and safe sender list in your email provider's settings, and enter the “**http://insiderone.com**" email address as a safe sender.
- Check whether your mail servers block emails from the “**http://insiderone.com**” domain, and whitelist (allowlist) Insider email server hostnames and IP addresses so the invitation won't be recognized as spam.
- Check if the company network has firewalls for the external IPs. If it does, it might block traffic except for certain domains or IPs, so access to “**http://insiderone.com**” needs to be granted.

> [!NOTE]
> If you use a corporate email account, you might need to work with your IT department or administrator to complete these processes.

## Issues with your inbox

Make sure your emails aren't kept in another folder.

- The invitation might be in the junk or spam folder.
- You might have accidentally deleted the email, so check your trash folder.
- The email might have been forwarded to one of your tabs outside of your main folder (Others, Updates, Social, etc.).

## Resend Invitation

If you still cannot find the invitation email or it has expired, the **Administrator** can resend it from the InOne panel.![](https://cdn.document360.io/c6df4583-da94-4cb2-bb8a-be0cbdd11109/Images/Documentation/image-1757676402777.png)

If you receive the email but still have trouble registering for Insider One's InOne panel, please note that **the** **old invitation links will expire once** **a new one is sent**. Therefore, you need to register using the last invitation link. If your invitation link has expired, contact your account admin, who has the Administrator role**.** They can send you a new invitation.

If you still have issues with the registration process, we highly suggest you [open a ticket](/v1/docs/create-a-support-ticket) to get help from the Insider One team.