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Invalid Emails

Diagnosing Invalid Email Addresses

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Discovering and addressing invalid email addresses is crucial for maintaining the effectiveness of your email campaigns. Understanding the various facets of invalid email addresses and how to handle them ensures that your emails reach their intended recipients. Explore the following sections to gain insights into dealing with invalid email formats.

Identifying Invalid Email Formats

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An invalid email occurs when you attempt to send email to an address that is formatted in a manner that does not meet internet email format standards or the email does not exist at the recipient's mail server. Examples include addresses without the "@" sign or addresses that include certain special characters and/or spaces. This response can come from our own server or the recipient mail server.

Handling Invalid Email Responses

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Before you send, SendGrid does a check against the format of the email address to attempt to verify its validity. If the recipient server checks the address and doesn't find it, they will send back a 550 bounce to say that this is an invalid email address.



Invalid drop events are retained for 30 days.

Managing Invalid Email Data

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Invalid email addresses can accumulate over time, affecting your email list's quality. To address this, you can perform several actions:

Searching Invalid Emails by Date

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In the top right corner, you will see a calendar icon. Click this and choose the dates you would like to search between. Your recipient list will refresh, showing the invalid email address reports from between those dates.

Removing Recipients From The List

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When you select the checkboxes next to the recipient names or select all, using the checkbox next to the search box, you will see a new button at the top of the page. From this list, you can choose to remove the selected recipients from the list.

Download Invalid Emails as CSV

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You can download your list as a CSV by clicking the gear icon at the top of the page and selecting "Download CSV." The file will download in your browser right away.

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