Deliverability to optonline.net

Emails Sent to optonline.net: 1,079,373

Open Rate to optonline.net: 111,167 (10.3%)

Date range:
Display as:

Sent vs Opens for optonline.net

Date Sent Opens Open Rate
4/18/2021 499 37 0.0%
4/17/2021 847 58 0.0%
4/16/2021 2,637 103 0.0%
4/15/2021 1,741 90 0.0%
4/14/2021 1,817 124 0.0%
4/13/2021 1,525 88 0.0%
4/12/2021 1,263 111 0.0%
4/11/2021 762 64 0.0%
4/10/2021 1,475 74 0.0%
4/9/2021 1,351 90 0.0%
4/8/2021 1,709 111 0.0%
4/7/2021 1,929 149 0.0%
4/6/2021 1,594 132 0.0%
4/5/2021 1,095 96 0.0%
4/4/2021 398 42 0.0%
4/3/2021 602 61 0.0%
4/2/2021 852 76 0.0%
4/1/2021 1,081 122 0.0%
3/31/2021 1,156 103 0.0%
3/30/2021 1,131 134 0.0%
3/29/2021 1,462 150 0.0%
3/28/2021 611 51 0.0%
3/27/2021 782 81 0.0%
3/26/2021 1,149 105 0.0%
3/25/2021 1,676 125 0.0%
3/24/2021 1,026 95 0.0%
3/23/2021 1,050 101 0.0%
3/22/2021 1,354 98 0.0%
3/21/2021 616 49 0.0%
3/20/2021 789 71 0.0%

Blocks from optonline.net

No blocks during specified time frame

Bounces from optonline.net

Message Count
550 5.1.1 Invalid recipient 358
Invalid:550-MailboxUnavailable 301
552 5.2.2 Quota exceeded 17
535 Authentication Failed for 10
451 4.7.1 Resources restricted for host 149.72.167.178 - try again later - F,5 - 03 7
451 4.7.1 Resources restricted for host 149.72.166.43 - try again later - F,5 - 03 6
551 SenderAuthorization: is not authorized to send emails to this service. 5
421 4.7.1 Resources restricted - try again later - G,3 4
451 4.7.1 Resources restricted for host 149.72.167.192 - try again later - G,5 - 13 3
421 4.7.1 Resources restricted - try again later - F,3 2
451 4.7.1 Resources restricted for host 149.72.167.178 - try again later - F,5 - 02 2
451 4.7.1 Resources restricted for host 198.21.1.157 - try again later - G,5 - 03 2
451 4.7.1 Resources restricted for host 149.72.166.43 - try again later - F,5 - 02 1
550 5.7.520 Access denied, Your organization does not allow external forwarding. Please contact your administrator for further assistance. AS 1
550-5.2.1 The user you are trying to contact is receiving mail at a rate that 550-5.2.1 prevents additional messages from being delivered. For more 550-5.2.1 information, please visit 550 5.2.1 https://support.google.com/mail/?p=ReceivingRatePerm 1
553 5.7.1 Recipient address is not acceptable. Sending denied. 1
NoMxRecord:0-0 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.