Deliverability to cox.net

Emails Sent to cox.net: 2,968,451

Open Rate to cox.net: 287,930 (9.7%)

Date range:
Display as:

Sent vs Opens for cox.net

Date Sent Opens Open Rate
6/5/2020 2,590 150 0.0%
6/4/2020 2,414 175 0.0%
6/3/2020 2,316 157 0.0%
6/2/2020 2,073 182 0.0%
6/1/2020 2,267 246 0.0%
5/31/2020 1,268 125 0.0%
5/30/2020 1,234 150 0.0%
5/29/2020 2,877 275 0.0%
5/28/2020 1,960 130 0.0%
5/27/2020 2,275 173 0.0%
5/26/2020 3,393 237 0.0%
5/25/2020 1,733 178 0.0%
5/24/2020 1,334 139 0.0%
5/23/2020 1,674 216 0.0%
5/22/2020 2,409 251 0.0%
5/21/2020 2,365 241 0.0%
5/20/2020 2,363 236 0.0%
5/19/2020 2,713 216 0.0%
5/18/2020 3,021 224 0.0%
5/17/2020 1,687 162 0.0%
5/16/2020 1,677 124 0.0%
5/15/2020 2,646 239 0.0%
5/14/2020 2,712 288 0.0%
5/13/2020 2,338 208 0.0%
5/12/2020 2,961 297 0.0%
5/11/2020 2,708 252 0.0%
5/10/2020 1,690 203 0.0%
5/9/2020 2,069 244 0.0%
5/8/2020 3,614 257 0.0%
5/7/2020 2,611 229 0.0%

Blocks from cox.net

No blocks during specified time frame

Bounces from cox.net

Message Count
550 5.1.1 Recipient address rejected: User does not exist. 2,249
552 5.2.2 Quota exceeded 68
552 5.2.0 sender rejected. Refer to Error Codes section at https://www.cox.com/residential/support/email-error-codes.html 45
554 cmsmtp 91.221.37.85 is listed on Cloudmark Please visit https://csi.cloudmark.com/en/reset?ip=91.221.37.85 37
452 4.1.0 sender rejected. Refer to Error Codes section at https://www.cox.com/residential/support/email-error-codes.html 10
Message queue continuously deferred for too long. See https://sendgrid.com/docs/glossary/throttling/#what-causes-a-deferral 9
SMTP; 550 5.1.1 Recipient address rejected: User does not exist. 4
421 cmsmtp 146.66.121.219 blocked. Refer to Error Codes section at https://www.cox.com/residential/support/email-error-codes.html 4
421 cmsmtp 146.66.121.168 blocked. Refer to Error Codes section at https://www.cox.com/residential/support/email-error-codes.html 4
421 cmsmtp 146.66.121.82 blocked. Refer to Error Codes section at https://www.cox.com/residential/support/email-error-codes.html 3
550 Action not taken 3
421 cmsmtp 146.66.121.217 blocked. Refer to Error Codes section at https://www.cox.com/residential/support/email-error-codes.html 3
554 cmsmtp 35.208.121.216 blocked. Refer to Error Codes section at https://www.cox.com/residential/support/email-error-codes.html 3
421 cmsmtp 146.66.121.9 blocked. Refer to Error Codes section at https://www.cox.com/residential/support/email-error-codes.html 2
554 cmsmtp 168.245.123.183 is listed on Cloudmark Please visit https://csi.cloudmark.com/en/reset?ip=168.245.123.183 2
421 cmsmtp 146.66.121.69 blocked. Refer to Error Codes section at https://www.cox.com/residential/support/email-error-codes.html 2
421 cmsmtp 146.66.121.80 blocked. Refer to Error Codes section at https://www.cox.com/residential/support/email-error-codes.html 2
421 cmsmtp 146.66.121.63 blocked. Refer to Error Codes section at https://www.cox.com/residential/support/email-error-codes.html 2
421 cmsmtp 146.66.121.7 blocked. Refer to Error Codes section at https://www.cox.com/residential/support/email-error-codes.html 1
421 cmsmtp 146.66.121.218 blocked. Refer to Error Codes section at https://www.cox.com/residential/support/email-error-codes.html 1
421 cmsmtp 146.66.121.167 blocked. Refer to Error Codes section at https://www.cox.com/residential/support/email-error-codes.html 1
550 5.4.6 Unusual sending activity detected. Please try after sometime. 1
421 cmsmtp 146.66.121.160 blocked. Refer to Error Codes section at https://www.cox.com/residential/support/email-error-codes.html 1
421 cmsmtp 146.66.121.210 blocked. Refer to Error Codes section at https://www.cox.com/residential/support/email-error-codes.html 1
550 5.1.8 Access denied, bad outbound sender AS 1
421 cmsmtp 146.66.121.84 blocked. Refer to Error Codes section at https://www.cox.com/residential/support/email-error-codes.html 1
421 cmsmtp too many sessions from 168.245.123.183. Refer to Error Codes section at https://www.cox.com/residential/support/email-error-codes.html 1
421 cmsmtp too many sessions from 146.66.121.168. Refer to Error Codes section at https://www.cox.com/residential/support/email-error-codes.html 1
421 cmsmtp 146.66.121.83 blocked. Refer to Error Codes section at https://www.cox.com/residential/support/email-error-codes.html 1
421 cmsmtp 146.66.121.163 blocked. Refer to Error Codes section at https://www.cox.com/residential/support/email-error-codes.html 1
421 cmsmtp 146.66.121.62 blocked. Refer to Error Codes section at https://www.cox.com/residential/support/email-error-codes.html 1
421 cmsmtp 146.66.121.87 blocked. Refer to Error Codes section at https://www.cox.com/residential/support/email-error-codes.html 1
421 cmsmtp 146.66.121.68 blocked. Refer to Error Codes section at https://www.cox.com/residential/support/email-error-codes.html 1
421 cmsmtp 146.66.121.215 blocked. Refer to Error Codes section at https://www.cox.com/residential/support/email-error-codes.html 1
421 cmsmtp 146.66.121.165 blocked. Refer to Error Codes section at https://www.cox.com/residential/support/email-error-codes.html 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.