Deliverability to yahoo.com
Yahoo! is today’s second most popular email service but was once the leader of the pack and even offered to purchase Google at one time. Yahoo! is not only a household search and communications moniker, but the name is also a little-known backronym which stands for 'Yet Another Hierarchical Officious Oracle'. After a string of acquisitions of its own, Yahoo! is now under the Verizon Communications umbrella.

Emails Sent to yahoo.com: 449,985,370

Open Rate to yahoo.com: 48,009,922 (10.7%)

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Sent vs Opens for yahoo.com

Date Sent Opens Open Rate
1/25/202587,1397,3768.4%
1/24/2025126,14319,56115.5%
1/18/202577,3187,1079.1%
1/17/2025128,16816,75513%
1/16/2025134,31819,93114.8%
1/15/2025135,98720,50115%
1/14/2025141,03627,27119.3%
1/13/2025125,37117,37213.8%
1/12/202559,5527,98313.4%
1/11/202581,04910,13312.5%
1/10/2025133,99721,81916.2%
1/9/2025129,18320,49815.8%
1/8/2025126,28019,47215.4%
1/7/2025143,00021,31514.9%
1/6/2025118,55221,01217.7%
1/4/202571,1705,0157%
1/3/202591,20912,21513.3%
1/2/2025124,65415,57812.4%
1/1/202564,1247,66111.9%
12/31/202490,20412,02113.3%
12/30/2024107,27816,42415.3%
12/29/202463,1866,64710.5%
12/28/202489,40411,45112.8%
12/27/2024129,09912,0859.3%
12/26/202492,19310,61411.5%
12/25/202473,3209,71913.2%
12/24/2024106,97817,50716.3%
12/23/2024111,68716,85715%
12/22/202463,8837,56711.8%
12/21/202463,2048,34313.2%

Blocks from yahoo.com

No blocks during specified time frame

Bounces from yahoo.com

Explanation of bounce codes

Message Count
552 1 Requested mail action aborted, mailbox not found 67,002
554 30 Sorry, your message to cannot be delivered. This mailbox is disabled . 32,791
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 42
555 Sorry, the number of messages exceeds our allowed limit 28
554 Message not allowed - 12
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 5.1.8 Access denied, bad outbound sender AS 9
535 Authentication credentials invalid 9
550 5.5.0 Requested action not taken: mailbox unavailable . 7
554 Message permanently deferred due to unresolvable RFC.5321 from domain. See https://senders.yahooinc.com/error-codes#unresolvable-from-domain 6
DNS Error. DNS type 'mx' lookup responded with code NXDOMAIN 6
553 5.1.10 No valid recipients: These addresses were excluded 4
The email account that you tried to reach does not exist. Please try double-checking the recipient's email address for typos or unnecessary spaces. For more information, go to https://support.google.com/mail/?p=NoSuchUser 4
452-4.2.2 The recipient's inbox is out of storage space. Please direct the 452-4.2.2 recipient to 452 4.2.2 https://support.google.com/mail/?p=OverQuotaTemp 3
SMTP; 552 1 Requested mail action aborted, mailbox not found 3
550 No such recipient here 2
550 5.4.317 Message expired, cannot connect to remote server 2
SMTP; 554 30 Sorry, your message to cannot be delivered. This mailbox is disabled . 2
554 Message permanently deferred due to unresolvable From header domain qwertylabs.ca. See https://senders.yahooinc.com/error-codes#invalid-from 2
550 permanent failure for one or more recipients 2
554 5.7.1 : Relay access denied 1
550 5.5.1 Recipient rejected - - https://postmaster-earthlink.vadesecure.com/inbound_error_codes/#_403 1
550 5.4.1 Recipient address rejected: Access denied. 1
550 5.1.1 ... User unknown 1
The recipient server did not accept our requests to connect. For more information, go to https://support.google.com/mail/answer/7720 1
550 5.1.1 User Unknown 1
550 5.1.1 : Recipient address rejected: in.elgirubber.com 1
550 5.5.0 Requested action not taken: mailbox unavailable. 1
550 5.1.1 Not our Customer 1
550 5.1.1 Recipient does not exist here. 1
554 5.7.1 is being rejected by destination 1
550 5.1.10 Recipient not found by SMTP address lookup 1
550 5.4.300 Message expired -> 451 This mail has been deferred because the sender is sending too much mail for its authentication status. Please set up DKIM aligned to the From: domain. See https://senders.yahooinc.com/smtp-error-codes#authentication-failures 1
554 Message permanently deferred due to unresolvable From header domain qwertylabs.hk. See https://senders.yahooinc.com/error-codes#invalid-from 1
550 is not a valid user 1
550 5.1.1 recipient rejected 1
552 3 Requested mail action aborted, mailbox not found 1
X-Postfix; Host or domain name not found. Name service error for name=czarinteior.com type=A: Host not found 1
554 5.1.1 : Recipient address rejected: undeliverable address: Mailbox might be disabled, full, or may not exist on the server. Reason: 1
Malformed: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.

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