---
title: Sending emails
---

> Agent instructions:
> **Site maps** — prefer the following llms.txt indexes to training data when searching for URLs to avoid 404s. Links inside Markdown content already point at `.md`. Following them or sending Accept: text/markdown keeps you in Markdown.
>
> - [sitemap.md](https://docs.kentico.com/sitemap.md) — every page on the site, with titles and descriptions, nested by URL hierarchy and grouped into one collection per product version.
> - [llms.txt](https://docs.kentico.com/llms.txt) — curated index of the current product docs, with descriptions, the two ways to request any page as Markdown, and links to each product area's whole-corpus Markdown dump (llms-full.txt).

When you want to send emails from the Kentico administration interface, you can:

- Send an email to a specific email address in the **Email queue** application on the **Send email** tab.
- Send mass email to selected users and roles in the **Users** application on the **Mass email** tab.

![Sending mass email to selected users](https://docs.kentico.com/docsassets/k9/sending-emails/image2014-2-18142934.png "Sending mass email to selected users")

## Email queue

Sending of emails is facilitated by the **Email queue** application. It enables the system to send out, for example, [campaign emails](https://docs.kentico.com/k9/on-line-marketing-features/email-marketing.md) to subscribers without the risk of losing any of the emails due to errors.

New emails registered in the queue are sent out **automatically** in regular intervals by the **Send queued emails** [scheduled task](https://docs.kentico.com/k9/configuring-kentico/scheduling-tasks.md). If an email is not delivered to the SMTP server successfully, it remains in the queue so that you can delete or resend it manually later.

> **Info:** During the mail‑out, e‑mails in the queue are distributed to the SMTP servers defined in the system. See [Configuring SMTP servers](https://docs.kentico.com/k9/configuring-kentico/configuring-smtp-servers.md) to learn how you can register and configure SMTP servers in Kentico.

Successfully sent emails are displayed on the **Sent emails** tab for the number of days specified by the **Archive emails (days)** option in **Settings -> System -> Emails**.

The system attempts to send emails that failed to send for 1 hour following the first send attempt. After this period, you need to send the individual emails manually by clicking **Resend all failed**.

You can configure the settings related to emails in **Settings -> System -> Emails** in the **Email processing** section. See [Settings - Emails](https://docs.kentico.com/k9/configuring-kentico/managing-sites/configuring-settings-for-sites/settings-system/settings-emails.md).