Deliverability to yahoo.co.uk
Yahoo.co.uk is Yahoo!’s United Kingdom equivalent. To achieve worldwide brand consistency, new Yahoo! email registrants will be assigned only the @yahoo.com domain.

Emails Sent to yahoo.co.uk: 6,361,001

Open Rate to yahoo.co.uk: 918,583 (14.4%)

Date range:
Display as:

Sent vs Opens for yahoo.co.uk

Date Sent Opens Open Rate
10/17/2021 2,097 335 0.0%
10/16/2021 2,906 472 0.0%
10/15/2021 9,632 2,052 0.0%
10/14/2021 13,333 2,282 0.0%
10/13/2021 11,381 1,958 0.0%
10/12/2021 10,337 1,400 0.0%
10/11/2021 9,566 996 0.0%
10/10/2021 2,853 369 0.0%
10/9/2021 3,962 450 0.0%
10/8/2021 6,701 929 0.0%
10/7/2021 7,333 1,095 0.0%
10/6/2021 15,033 1,523 0.0%
10/5/2021 9,094 1,338 0.0%
10/4/2021 9,460 1,134 0.0%
10/3/2021 3,352 584 0.0%
10/2/2021 4,301 765 0.0%
10/1/2021 10,276 1,196 0.0%
9/30/2021 17,262 1,363 0.0%
9/29/2021 8,602 1,210 0.0%
9/28/2021 8,656 1,182 0.0%
9/27/2021 8,825 1,204 0.0%
9/26/2021 3,114 606 0.0%
9/25/2021 3,360 680 0.0%
9/24/2021 8,736 1,327 0.0%
9/23/2021 17,593 1,202 0.0%
9/22/2021 8,821 1,336 0.0%
9/21/2021 17,653 1,160 0.0%
9/20/2021 9,445 1,164 0.0%
9/19/2021 2,567 460 0.0%
9/18/2021 3,176 482 0.0%

Blocks from yahoo.co.uk

No blocks during specified time frame

Bounces from yahoo.co.uk

Message Count
552 1 Requested mail action aborted, mailbox not found 1,633
554 30 Sorry, your message to cannot be delivered. This mailbox is disabled . 1,313
552 3 Requested mail action aborted, mailbox not found 559
Email was deferred due to the following reason: 129
535 Incorrect authentication data 9
421 4.7.0 Messages from 149.72.32.175 temporarily deferred due to unexpected volume or user complaints - 4.16.55.1; see https://postmaster.yahooinc.com/error-codes 2
550 Could not send message at it contains too many spam like characteristics 2
452-4.2.2 The email account that you tried to reach is over quota. Please direct 452-4.2.2 the recipient to 452 4.2.2 https://support.google.com/mail/?p=OverQuotaTemp 2
421 4.7.0 Messages from 149.72.32.168 temporarily deferred due to unexpected volume or user complaints - 4.16.55.1; see https://postmaster.yahooinc.com/error-codes 2
550 5.4.6 : Recipient address rejected: Outbound SMTP cluster at webhostbox.net said Mail sending quota exceeded. 1
421 4.7.0 Messages from 149.72.167.178 temporarily deferred due to unexpected volume or user complaints - 4.16.55.1; see https://postmaster.yahooinc.com/error-codes 1
554 5.7.1 : Recipient address rejected: You have exceeded the limit of 200 messages per hour and per account. Please, re-try later. 1
SMTP; 552 1 Requested mail action aborted, mailbox not found 1
421 4.7.0 Messages from 149.72.137.59 temporarily deferred due to unexpected volume or user complaints - 4.16.55.1; see https://postmaster.verizonmedia.com/error-codes 1
421 4.7.0 Messages from 149.72.134.135 temporarily deferred due to unexpected volume or user complaints - 4.16.55.1; see https://postmaster.yahooinc.com/error-codes 1
550 Outgoing mail from "" has been suspended. 1
550 User account has sent too many emails 1
X-Postfix; delivery temporarily suspended: lost connection with mx-eu.mail.am0.yahoodns.net while sending RCPT TO 1
TLS Negotiation failed, the certificate doesn't match the host. 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.

Try GMass today!

3 seconds to install!

Add to Gmail GMass requires Chrome

GMass