Deliverability to optonline.net

Emails Sent to optonline.net: 2,446,886

Open Rate to optonline.net: 397,686 (16.3%)

Date range:
Display as:

Sent vs Opens for optonline.net

Date Sent Opens Open Rate
5/27/2023 1,581 318 0.0%
5/26/2023 2,155 565 0.0%
5/25/2023 2,145 580 0.0%
5/24/2023 3,646 905 0.0%
5/23/2023 2,317 678 0.0%
5/22/2023 2,997 679 0.0%
5/21/2023 1,218 383 0.0%
5/20/2023 697 188 0.0%
5/19/2023 2,286 727 0.0%
5/18/2023 2,155 604 0.0%
5/17/2023 3,087 702 0.0%
5/16/2023 3,290 906 0.0%
5/15/2023 3,496 790 0.0%
5/14/2023 1,091 276 0.0%
5/13/2023 1,864 491 0.0%
5/12/2023 2,355 604 0.0%
5/11/2023 2,293 561 0.0%
5/10/2023 2,697 595 0.0%
5/9/2023 2,174 679 0.0%
5/8/2023 2,606 587 0.0%
5/7/2023 1,038 334 0.0%
5/6/2023 1,176 386 0.0%
5/5/2023 1,908 519 0.0%
5/4/2023 1,826 505 0.0%
5/3/2023 2,863 792 0.0%
5/2/2023 1,432 404 0.0%
5/1/2023 2,964 729 0.0%
4/30/2023 1,020 295 0.0%
4/29/2023 1,149 301 0.0%
4/28/2023 2,753 648 0.0%

Blocks from optonline.net

No blocks during specified time frame

Bounces from optonline.net

Explanation of bounce codes

Message Count
550 RCPT TO: User unknown 900
554 5.1.0 Sender denied - M1 362
550 5.1.1 RCPT TO: mailbox unavailable 154
Message queue continuously deferred for too long. See https://sendgrid.com/docs/glossary/throttling/#what-causes-a-deferral 13
550 - message rejected AUP#SNDR 8
SMTP; 550 RCPT TO: User unknown 5
Invalid:550-MailboxUnavailable 3
421-4.7.28 Our system has detected an unusual rate of 421-4.7.28 unsolicited mail originating from your IP address. To protect our 421-4.7.28 users from spam, mail sent from your IP address has been temporarily 421-4.7.28 rate limited. Please visit 421-4.7.28 https://support.google.com/mail/?p=UnsolicitedRateLimitError 2
552 1 Requested mail action aborted, mailbox not found 2
550 5.7.1 Message blocked. If this is a false positive, please report this to your hosting service provider. See https://console.mailchannels.net/insights/bounce?auid=duocircle&sender=steve%40ml-services.info&txid=062620c42220ba1a 1
550 5.7.1 Message blocked. If this is a false positive, please report this to your hosting service provider. See https://console.mailchannels.net/insights/bounce?auid=duocircle&sender=steve%40ml-services.info&txid=0674d75528f44ccf 1
550 5.7.1 Message blocked. If this is a false positive, please report this to your hosting service provider. See https://console.mailchannels.net/insights/bounce?auid=duocircle&sender=steve%40ml-services.info&txid=08590ec54e20c6bc 1
550 5.7.1 Message blocked. If this is a false positive, please report this to your hosting service provider. See https://console.mailchannels.net/insights/bounce?auid=duocircle&sender=steve%40ml-services.info&txid=0d51e68b77b99ec0 1
550 5.7.1 Message blocked. If this is a false positive, please report this to your hosting service provider. See https://console.mailchannels.net/insights/bounce?auid=duocircle&sender=steve%40ml-services.info&txid=0e9039b97942f442 1
550 5.7.1 Message blocked. If this is a false positive, please report this to your hosting service provider. See https://console.mailchannels.net/insights/bounce?auid=duocircle&sender=steve%40ml-services.info&txid=1a219ff316091dae 1
550 5.7.1 Message blocked. If this is a false positive, please report this to your hosting service provider. See https://console.mailchannels.net/insights/bounce?auid=duocircle&sender=steve%40ml-services.info&txid=2068905b0d64e45d 1
550 5.7.1 Message blocked. If this is a false positive, please report this to your hosting service provider. See https://console.mailchannels.net/insights/bounce?auid=duocircle&sender=steve%40ml-services.info&txid=21804408310e2587 1
550 5.7.1 Message blocked. If this is a false positive, please report this to your hosting service provider. See https://console.mailchannels.net/insights/bounce?auid=duocircle&sender=steve%40ml-services.info&txid=2fbbd2e073cafa1c 1
550 5.7.1 Message blocked. If this is a false positive, please report this to your hosting service provider. See https://console.mailchannels.net/insights/bounce?auid=duocircle&sender=steve%40ml-services.info&txid=3cb5a74f4dbfdaa8 1
550 5.7.1 Message blocked. If this is a false positive, please report this to your hosting service provider. See https://console.mailchannels.net/insights/bounce?auid=duocircle&sender=steve%40ml-services.info&txid=3ed0100a7f861572 1
550 5.7.1 Message blocked. If this is a false positive, please report this to your hosting service provider. See https://console.mailchannels.net/insights/bounce?auid=duocircle&sender=steve%40ml-services.info&txid=5743605a4103f80a 1
550 5.7.1 Message blocked. If this is a false positive, please report this to your hosting service provider. See https://console.mailchannels.net/insights/bounce?auid=duocircle&sender=steve%40ml-services.info&txid=5f9534a00929176e 1
550 5.7.1 Message blocked. If this is a false positive, please report this to your hosting service provider. See https://console.mailchannels.net/insights/bounce?auid=duocircle&sender=steve%40ml-services.info&txid=76bdcb3b75ab13ed 1
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. 1
550-5.7.25 The IP address sending this message does not have a 550-5.7.25 PTR record setup, or the corresponding forward DNS entry does not 550-5.7.25 point to the sending IP. As a policy, Gmail does not accept messages 550-5.7.25 from IPs with missing PTR records. Please visit 550-5.7.25 https://support.google.com/mail/answer/81126#ip-practices 1
The recipient server did not accept our requests to connect. 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.

Start your free trial of GMass now

Install in 30 seconds — no credit card or sign up form required

Try GMass for free Then check out the quickstart guide to send your first mail merge email in minutes!

GMass