Why does Google Postmaster Tools show delivery errors when emails are delivered?

Marketer from Email Geeks mentions temporary failures will show up in Google Postmaster Tools, especially during warming up new clients, but the delivery section may not consistently match actual delivery logs.

Email marketer from Stack Overflow shares that sometimes, temporary failures are reported because of initial rejections due to reputation issues or greylisting, even if the email is delivered later.

Marketer from Email Geeks shares an experience of seeing a spike in Google Postmaster Tool errors while warming a domain due to sending too fast, which turned out to be temporary errors in the logs.

Email marketer from Quora says that if Gmail's servers are under high load, they might temporarily reject connections. Even if the emails are delivered after retries, the initial rejection will be logged.

Email marketer from Super User suggests that Postmaster Tools is just a reporting tool and the errors are reported on the first instance of the email delivery issue. Subsequent successful deliveries do not erase that initial error event.

Marketer from Email Geeks shares that Google Postmaster Tools delivery errors are tempfails, even if the final delivery attempt succeeds.

Email marketer from Email on Acid explains that temporary delivery errors could be reported due to sending server reputation. If Gmail initially suspects a sender but delivers the email after further checks, the initial suspicion might still register as an error.

Email marketer from Mailjet explains that a temporary blocklisting can cause initial delivery errors, even if the email is eventually delivered after retries. Postmaster Tools might still log these initial errors.

Email marketer from DigitalMarketer emphasizes the importance of monitoring sender reputation. A temporary dip in reputation can lead to initial delivery errors, even if the sender's reputation recovers quickly and subsequent emails are delivered successfully. Postmaster Tools might log these initial errors.

Email marketer from Email Marketing Forum suggests that initial failures might be due to SPF or DKIM authentication problems. Even if these issues are resolved during retries allowing the email through, the first error can be reported.

Marketer from Email Geeks shares that Google Postmaster Tool data provides insight but the totals are not accurate percentages and to rely on mail bounce logs.

Email marketer from Reddit discusses warming up IP addresses, and mentions that temporary errors are common during this process. Even if emails eventually get through, the initial temporary failures can still be reflected in Postmaster Tools.

Email marketer from Litmus shares that greylisting (temporary rejection of emails from unknown senders) can cause initial delivery errors that are recorded by monitoring tools, even when the email is eventually accepted after a retry.

Expert from Spam Resource explains that temporary delivery problems (soft bounces) can be recorded even if the email is later delivered, leading to discrepancies in reports. She mentions temporary blocklisting and greylisting as examples. The system logs the first attempt.

Expert from Email Geeks explains that Google Postmaster Tool data may be inaccurate and advises to trust your own data and logs.

Expert from Word to the Wise suggests that initial delivery errors could be due to temporary reputation hiccups or greylisting. Even if the email is delivered on a retry, the first attempt error can be logged by Postmaster Tools. Tools like this are designed to give you a wholistic view of any issues even if some were later resolved.

Documentation from Microsoft explains that EOP may temporarily defer messages due to various checks. If the messages are later accepted, the initial deferral might still be recorded in monitoring tools, similar to what's observed in Postmaster Tools.

Documentation from SparkPost explains transient failures, also known as soft bounces. These failures indicate a temporary problem, such as the recipient's mailbox being full or the receiving server being temporarily unavailable. While the email may eventually be delivered, the initial transient failure might still be logged in Postmaster Tools.

Documentation from Mailchimp explains that deferred deliveries can be counted as errors initially. These are instances where servers temporarily refuse to accept a message but may accept it later.

Documentation from Google Support explains that delivery errors in Postmaster Tools can include temporary failures. Even if an email is eventually delivered after retries, the initial failure might still be reported as a delivery error.

Documentation from SendGrid outlines soft bounces which are temporary delivery failures. These can occur due to a full inbox or server issues and may be reported as errors in tools like Postmaster Tools, even if subsequent attempts succeed.