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Yandex Cloud Postbox
  • Getting started
    • Overview
    • Email event notifications
    • Tracking email openings
    • Click tracking in emails
    • Unsubscribe mechanism
    • Terms and definitions
    • Statistics
    • Limitations on email attachments
    • Quotas and limits
  • Access management
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  • Monitoring metrics
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  • FAQ

In this article:

  • Metrics
  • Viewing statistics
  • Breakdown by provider
  1. Concepts
  2. Statistics

Statistics

Written by
Yandex Cloud
Updated at May 18, 2026
  • Metrics
  • Viewing statistics
  • Breakdown by provider

In Yandex Cloud Postbox, you can view statistics for sent emails, e.g., how many emails were sent, delivered, not delivered, or opened.

MetricsMetrics

Yandex Cloud Postbox offers the following metrics:

Metrica

Description

When increases

Email delivery

Sent

Number of emails Yandex Cloud Postbox accepted for delivery.

Yandex Cloud Postbox accepts an email for delivery.

Delivered

Number of emails successfully delivered to the recipients' mail servers.

Yandex Cloud Postbox gets a confirmation from the recipient's email server that the email was accepted.

Not delivered

Number of emails not delivered to the recipients' mail servers.

Yandex Cloud Postbox gets notified by the recipient's email server that the email cannot be delivered, or that the email is not delivered within a particular time.

Engagement

Openings

Number of emails opened by recipients.

Yandex Cloud Postbox gets notified that the email was opened.

Only emails with open tracking on are counted. The opens is counted for the day the email was opened, not sent. If the recipient opens the same email multiple times, the metric increases by the same number of opens.

Clicks

Number of email clicks.

Yandex Cloud Postbox gets notified about an email click.

Only emails with click tracking on are counted. If the recipient clicks the same link multiple times, the metric increases by the same number of clicks.

Negative feedback

Complaints

Number of complaints about emails

Yandex Cloud Postbox receives an email-related complaint from an internet service provider (ISP).

Unsubscribes

Number of unsubscribe requests.

Yandex Cloud Postbox receives an unsubscribe request from the recipient.

Viewing statisticsViewing statistics

You can view your sent email statistics on the Statistics page in the management console.

Breakdown by providerBreakdown by provider

In your sent email statistics, you can look up data on the main email providers (ISPs):

Provider

Domains

Yandex

yandex.ru, yandex.com, ya.ru, yandex.by, yandex.kz

Google

gmail.com, googlemail.com

Mail.Ru Group

mail.ru, bk.ru, list.ru, inbox.ru, internet.ru

Microsoft

outlook.com, hotmail.com, live.com, msn.com, windowslive.com

Other target domains fall into the Other category.

Breakdown by provider only considers the domain from the recipient's email address.

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Terms and definitions
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Limitations on email attachments
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