# Email

An email message is composed of header information and a body. The body can be designed directly in Batch or uploaded as a pre-built HTML template.

All fields support [personalization](https://doc.batch.com/getting-started/features/customer-engagement-platform/message/personalization), except the sender address, which must be selected from predefined options configured in **Settings**.

<figure><img src="https://1464139620-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FUIK868wiiK9XOVyETGZS%2Fuploads%2FcmiQEn5DlG1RECur5rkr%2Fimage.png?alt=media&#x26;token=30d44184-a13d-4d79-8f8d-bb4b2ca42ec5" alt="email composer"><figcaption></figcaption></figure>

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### Header Information

#### Email sender

The sender name and address are displayed as the source of the message. Senders are categorized by orchestration type (marketing or transactional) and must be configured in **Settings** before use. Learn how to configure email senders in [#email-senders](https://doc.batch.com/getting-started/features/settings/channels#email-senders "mention").

#### Reply-To *(optional)*

By default, replies are directed to the sender address. You can override this by specifying a custom reply-to address.

#### Subject line

The subject is the first element recipients see in their inbox. Personalization is supported and recommended to improve open rates.

#### Preheader *(optional)*

The preheader is the short text displayed next to the subject line in most email clients. By default, it is taken from the beginning of the email body. You can override it with custom text for better control over the preview.

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### Email body

The email body can be created in two ways:

#### 1. Email Composer

Batch's **Email Composer**, powered by Stripo, lets you design emails visually from scratch or from existing templates and modules.

Useful resources:

* [Email guides](https://doc.batch.com/guides-and-best-practices/message/email)
* [Stripo Education Portal](https://stripo.email/education/)

**Timer Block**

The Timer Block is an optional feature that can be enabled on demand — contact your Customer Success Manager to activate it.

{% hint style="warning" %}
**Replication behavior:** When an email is replicated (via orchestration replication, A/B test, or multi-language variants), timer blocks are **synchronized** across all copies. Any change made to one timer block will apply to all others. If you need each variant to have an independent countdown, **duplicate the timer block** within each copy to break the synchronization and ensure they are distinct.
{% endhint %}

#### 2. Upload HTML template

If you have a pre-designed email template, you can upload it directly as HTML.

See: [How to upload your email templates?](https://doc.batch.com/guides-and-best-practices/message/email/templates-and-modules-management/how-to-upload-your-email-templates)

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### Preview

Use the **Desktop** and **Mobile** preview modes to verify how your email renders across different screen sizes before sending.

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### Send a test

You can send a test email at any stage of composition. A few things to note:

* The subject line is prefixed with **\[TEST]** for easy identification.
* The **list-unsubscribe header** is not included in test emails.
* Other behaviors are consistent with test messages across all channels. See [#send-a-test](https://doc.batch.com/getting-started/features/customer-engagement-platform/overview#send-a-test "mention") for details.

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### Opt-in management

#### Unsubscribe link

An unsubscribe link is **required** in all marketing emails. When a recipient clicks it:

* They are unsubscribed from your marketing emails.
* They are redirected to a confirmation landing page. See how to proceed in [Choosing a confirmation landing page](https://doc.batch.com/guides-and-best-practices/message/email/link-and-tracking-settings/how-to-add-an-unsubscribe-link-to-your-email-template#h_2c551c2d00).

Learn how to add an unsubscribe link: [How to add an unsubscribe link to your email template?](https://doc.batch.com/guides-and-best-practices/message/email/link-and-tracking-settings/how-to-add-an-unsubscribe-link-to-your-email-template)

#### Suppression Rules

Batch automatically maintains a suppression list based on the following rules:

| Event                      | Outcome                                                                                          |
| -------------------------- | ------------------------------------------------------------------------------------------------ |
| Hard bounce                | Address added to suppression list for **all** emails (marketing & transactional)                 |
| 5 consecutive soft bounces | Address added to suppression list for **marketing** emails only                                  |
| Spam complaint             | Recipient marked as **unsubscribed** (marketing); address is *not* added to the suppression list |

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### Email Deliverability

Batch provides detailed resources on deliverability, sender reputation, and IP warm-up strategies. See [Email Deliverability](https://doc.batch.com/guides-and-best-practices/email-deliverability).