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Deliverability to mac.com

Sending volume, opens, bounce responses, and block messages observed by GMass for email sent to mac.com.

Apple’s Mac.com is one of two discontinued Apple iCloud email domains, the other being @me.com. Both domains continue to be supported for legacy users, though new users will receive the @icloud.com address at registration.
Emails sent 7,682,014 Messages represented in this domain dataset
Unique opens 1,607,218 Unique open events associated with those sends
Open rate 20.9% Across all available data for mac.com

Sent vs. opens

Change the date range or chart style. Bounce and block sections below follow the same selected date range.

Date Sent Opens Open rate

Blocks from mac.com

SMTP responses that generally indicate a valid address whose message was rejected.

No blocks during the specified time frame.

Bounces from mac.com

SMTP responses that generally indicate an invalid or undeliverable email address.

Bounce code guide
368 bounce events · 10 response types
  • 552 5.2.2 : user is over quota 123
  • 550 5.1.1 : user does not exist 96
  • Invalid:550-MailboxUnavailable 81
  • 554 5.7.1 Message rejected due to local policy. Please visit https://support.apple.com/en-us/HT204137. 39
  • 550 5.1.6 user no longer on system: 12
  • 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 6
  • 550 5.2.1 user disabled; cannot receive new mail: 4
  • 551 SenderAuthorization: is not authorized to send emails to this service. 3
  • X-Postfix; Message delivery failed 3
  • aggressive-handler 1

Methodology

Send and open statistics

Send and open statistics are updated daily. Every day, open statistics are refreshed for the previous 14 days because not every open happens on the same day an email is sent. Open-rate data remains tied to the emails actually sent on each particular day.

Bounces and blocks

Bounces and blocks update in real time. SMTP responses are de-personalized so similar responses can be grouped for analysis. GMass categorizes responses through internal human review: bounces generally indicate an invalid address, while blocks generally indicate a valid address whose message was rejected.

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