Deliverability to umich.edu

Emails Sent to umich.edu: 2,116,359

Open Rate to umich.edu: 338,122 (16.0%)

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Sent vs Opens for umich.edu

Date Sent Opens Open Rate
1/25/2025 792 155 0.0%
1/24/2025 1,496 233 0.0%
1/18/2025 599 80 0.0%
1/17/2025 1,442 238 0.0%
1/16/2025 1,553 224 0.0%
1/15/2025 1,560 334 0.0%
1/14/2025 1,567 262 0.0%
1/13/2025 1,171 268 0.0%
1/12/2025 472 88 0.0%
1/11/2025 466 100 0.0%
1/10/2025 1,167 273 0.0%
1/9/2025 1,071 238 0.0%
1/8/2025 1,021 154 0.0%
1/7/2025 1,165 177 0.0%
1/6/2025 1,036 207 0.0%
1/4/2025 510 91 0.0%
1/3/2025 1,029 187 0.0%
1/2/2025 959 171 0.0%
1/1/2025 447 64 0.0%
12/31/2024 977 170 0.0%
12/30/2024 1,356 193 0.0%
12/29/2024 365 43 0.0%
12/28/2024 520 86 0.0%
12/27/2024 1,115 156 0.0%
12/26/2024 1,105 167 0.0%
12/25/2024 1,118 188 0.0%
12/24/2024 961 155 0.0%
12/23/2024 1,130 151 0.0%
12/22/2024 532 76 0.0%
12/21/2024 572 117 0.0%

Blocks from umich.edu

No blocks during specified time frame

Bounces from umich.edu

Explanation of bounce codes

Message Count
550 Requested action failed: User not found 1,364
Invalid:550-MailboxUnavailable 233
550-5.7.1 The user you are attempting to contact has reached their U-M Google 550-5.7.1 storage limit and cannot send or receive email. They must reduce 550-5.7.1 their storage under the limit to restore account and email 550 5.7.1 functionality. - gcdp - gsmtp 25
550-5.2.1 The email account that you tried to reach is inactive. For more 550-5.2.1 information, go to 550 5.2.1 https://support.google.com/mail/?p=DisabledUser 11
550-5.1.1 The email account that you tried to reach does not exist. Please try 550-5.1.1 double-checking the recipient's email address for typos or 550-5.1.1 unnecessary spaces. For more information, go to 550 5.1.1 https://support.google.com/mail/?p=NoSuchUser 11
550 Unknown host: 2
550 5.4.1 Recipient address rejected: Access denied. 1
554 5.4.14 Hop count exceeded - possible mail loop ATTR34 1
Message queue continuously deferred for too long. See https://sendgrid.com/docs/glossary/throttling/#what-causes-a-deferral 1

Methodology

Send and open statistics are updated daily. Bounces and blocks are updated in real-time. Every day, open statistics are updated for the last 14 days. Generally, you'll notice an increase of an open rate for a domain for a day over the course of 14 days, since not all open events occur the same day an email is sent. That means that open rate data is tied to the actual emails sent on a particular day.

Bounce and block codes are the codes as returned by the remote SMTP server after having been de-personalized. Meaning, unique identifiers present in SMTP codes are removed so that SMTP responses can be grouped for analysis. In certain cases, such as when the email is being relayed through an intermediary SMTP server, the remote SMTP server may not be the same as the MX record for the domain. SMTP codes are categorized as "bounces" vs "blocks" by internal human review. Bounces generally indicate an invalid email address. Blocks generally indicate a rejection of the email message but a valid email address.

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