Deliverability to comcast.net

Emails Sent to comcast.net: 5,981,025

Open Rate to comcast.net: 851,878 (14.2%)

Date range:
Display as:

Sent vs Opens for comcast.net

Date Sent Opens Open Rate
1/18/2020 7,348 705 0.0%
1/17/2020 10,353 1,219 0.0%
1/16/2020 16,141 1,757 0.0%
1/15/2020 12,904 1,586 0.0%
1/14/2020 11,250 1,869 0.0%
1/13/2020 12,826 2,015 0.0%
1/12/2020 5,787 667 0.0%
1/11/2020 6,055 948 0.0%
1/10/2020 10,530 1,475 0.0%
1/9/2020 14,428 1,919 0.0%
1/8/2020 13,038 1,485 0.0%
1/7/2020 14,433 1,832 0.0%
1/6/2020 12,806 1,710 0.0%
1/5/2020 6,375 581 0.0%
1/4/2020 6,163 844 0.0%
1/3/2020 12,834 1,591 0.0%
1/2/2020 10,364 1,309 0.0%
1/1/2020 5,741 641 0.0%
12/31/2019 12,359 1,225 0.0%
12/30/2019 9,348 1,350 0.0%
12/29/2019 5,016 507 0.0%
12/28/2019 5,856 685 0.0%
12/27/2019 8,019 911 0.0%
12/26/2019 8,148 856 0.0%
12/25/2019 5,483 511 0.0%
12/24/2019 8,381 806 0.0%
12/23/2019 9,804 1,319 0.0%
12/22/2019 3,797 536 0.0%
12/21/2019 5,378 980 0.0%
12/20/2019 11,805 1,381 0.0%

Blocks from comcast.net

No blocks during specified time frame

Bounces from comcast.net

Message Count
550 5.1.1 Not our Customer 1,962
550 5.1.0 Invalid sender domain 225
550 5.1.1 recipient not available 79
550 5.2.0 Message rejected due to DMARC. Please see http://postmaster.comcast.net/smtp-error-codes.php#DM000001 54
550 5.1.1 recipient mailbox unallocated 27
552 5.1.1 recipient rejected - extended quota violation 24
554 5.1.0 50.31.63.254 Comcast block for spam. Please see http://postmaster.comcast.net/smtp-error-codes.php#BL000000 22
452 4.1.1 user over quota 10
334 334 535 5.7.3 Authentication unsuccessful 9
550 5.1.1 Account not available 5
X-Postfix; delivery temporarily suspended: lost connection with mx2.comcast.net while receiving the initial server greeting 2
X-Postfix; delivery temporarily suspended: host mx2.comcast.net refused to talk to me: 554 138.68.234.190 Comcast requires that all mail servers must have a PTR record with a valid Reverse DNS entry. Currently your mail server does not fill that requirement. For more information, refer to: http://postmaster.comcast.net/smtp-error-codes.php#554 2
554 5.7.1 Mailbox has reached daily sending limits for this IP: 209.85.160.171 1
554 5.2.2 mailbox full; Failed to process message due to a permanent exception with message Cannot get ID from name. 0.35250, 1.36674, 1.61250, 1.45378, 1.44866, 1.36674, 1.61250, 1.45378, 1.44866, 1.36674, 1.61250, 1.45378, 1.44866, 1.36674, 1.61250, 1.45378B000000, 1.44866, 1.36674, 1.61250, 1.45378, 1.44866B000000, 1.36674:A1000000, 1.61250, 1.45378, 1.44866, 1.36674, 1.61250, 1.45378A000000, 1.44866E110000, 16.55847:ED070000, 17.43559F0030000000000000000000000000000, 20.52176FFF890F00F01F140 1
550 5.1.1 User Unknown 1
554 5.7.1 Mailbox has reached daily sending limits for this IP: 209.85.222.179 1
550 No Such User Here 1
554 resimta-po-36v.sys.comcast.net resimta-po-36v.sys.comcast.net 138.68.234.190 Comcast requires that all mail servers must have a PTR record with a valid Reverse DNS entry. Currently your mail server does not fill that requirement. For more information, refer to: http://postmaster.comcast.net/smtp-error-codes.php#554 1
554 5.1.0 167.89.106.58 Comcast block for spam. Please see http://postmaster.comcast.net/smtp-error-codes.php#BL000000 1
550 #5.1.0 Address rejected. 1
554 5.7.1 Mailbox has reached daily sending limits for this IP: 209.85.222.170 1
X-Postfix; delivery temporarily suspended: host mx1.comcast.net refused to talk to me: 554 resimta-po-02v.sys.comcast.net resimta-po-02v.sys.comcast.net 138.68.234.190 Comcast requires that all mail servers must have a PTR record with a valid Reverse DNS entry. Currently your mail server does not fill that requirement. For more information, refer to: http://postmaster.comcast.net/smtp-error-codes.php#554 1
554 5.7.1 Mailbox has reached daily sending limits for this IP: 209.85.222.182 1
554 5.7.1 Mailbox has reached daily sending limits for this IP: 209.85.222.172 1
554 5.7.1 Mailbox has reached daily sending limits for this IP: 209.85.219.44 1
X-Postfix; delivery temporarily suspended: connect to mx2.comcast.net: Network is unreachable 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.