---
title: Checking undelivered emails in Sendgrid
description: The Sendgrid subaccount associated with your Content Catalyst service is used for delivering transactional emails from the site
---

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3. [Email Deliverability](https://guide.contentcatalyst.com/operations-administration-support?hsLang=en#email-deliverability)

# Checking undelivered emails in Sendgrid

## The Sendgrid subaccount associated with your Content Catalyst service is used for delivering transactional emails from the site

**Read this article to understand how to:** 

- Understand your main interaction with Sendgrid
- Navigate Sendgrid

The SendGrid subaccount associated with your Content Catalyst service is used for delivering transactional emails from the site. 

After the initial **[configuration to ensure a high reputation and level of email deliverability](https://guide.contentcatalyst.com/hc/en-gb/articles/115001074546-best-practices-for-email-deliverability-?hsLang=en)**, the main interaction you will have with SendGrid will be to see why one of your customers didn't receive an email.

🔔 **Note:** In both the Content Catalyst platform and Sendgrid, information about sent emails is kept for 30 days.

### On your Content Catalyst Platform

The first thing to check when a user doesn't receive an email is the email address associated with the account to make sure it is correct.

![Checking Underlivered Emails - 1-1](https://guide.contentcatalyst.com/hs-fs/hubfs/Checking%20Underlivered%20Emails%20-%201-1.png?width=657&height=342&name=Checking%20Underlivered%20Emails%20-%201-1.png)

Next, check the emails sent report available in ***Analysis \> General \> emails sent***.  This is a list of emails that have been handed off to SendGrid, so you can check that the email has been generated.

![Checking Underlivered Emails - 2-1](https://guide.contentcatalyst.com/hs-fs/hubfs/Checking%20Underlivered%20Emails%20-%202-1.png?width=655&height=288&name=Checking%20Underlivered%20Emails%20-%202-1.png)

### On Sendgrid

### Activity Feed

![Checking Underlivered Emails - 3-1](https://guide.contentcatalyst.com/hs-fs/hubfs/Checking%20Underlivered%20Emails%20-%203-1.png?width=652&height=505&name=Checking%20Underlivered%20Emails%20-%203-1.png)

1. Select Activity from the left-hand **navigation bar**
2. Optionally filter dates to a specific range or filter emails to a specific address
3. Note the status of the email

![Checking Underlivered Emails - 4-1](https://guide.contentcatalyst.com/hs-fs/hubfs/Checking%20Underlivered%20Emails%20-%204-1.png?width=637&height=488&name=Checking%20Underlivered%20Emails%20-%204-1.png)

1. Select an email for details
2. The detail view tells you why the email wasn't delivered

Typical reasons for the email not being delivered include:

- **Drops** SendGrid will drop an email when the contact on that email is in one of your suppression groups, the recipient email previously bounced, or that recipient has **marked your email as spam.**
- **Bounces** The receiving server could not or would not accept the message. The user might not exist at that domain or the mailbox could be full.
- **Blocks** When your IP address has been blocked by an ISP or messaging organization. Blocks are less severe than bounces and do not result in permanent suppressions: subsequent sends to blocked email addresses are not automatically suppressed.
- **Invalid** The email address is not a valid domain.
- **Spam Reports** Whenever a recipient marks your email as spam and their mail server tells Sendgrid about it.

### Suppressions

![Checking Underlivered Emails - 5-1](https://guide.contentcatalyst.com/hs-fs/hubfs/Checking%20Underlivered%20Emails%20-%205-1.png?width=618&height=421&name=Checking%20Underlivered%20Emails%20-%205-1.png)

Suppressions are where you can manage email addresses which are no longer being sent due to previous failures.  The screenshot above shows bounces, but it is similar to the other sections.

1. Select suppressions from the **navigation bar** and choose the reason emails are no longer sent to this address.
2. Detail about the suppressed email address, the time that address was added to the list and a summary of the reason why is listed.
3. By selecting one or more items from the list you can remove them from the suppression list.

If you have completed configuring your email to ensure a high reputation, the most effective way of ensuring successful email delivery is to engage with your customers to ensure that your sending domains are "whitelisted" and that their local security policies do not filter or reject your emails.

 

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