SMTP server configuration per email address

by swkweb

Rating: 5.0

Downloads: 113

Configure SMTP servers per sender address in Shopware. Use a username and password or OAuth 2.0, add BCC recipients and send emails directly or through the message queue.

Annually €16.66* /month €239.40 * €199.95* /year 16.48% discount In comparison to the regular monthly price

Monthly €19.95* /month Cancelable monthly

Compatible with:

6.4.0.0 - 6.7.16.0

Includes:

Free trial month

The subscription starts with a free trial month during which it can be canceled at any time.

All updates

During the subscription all released updates are included for free

Support from the Extension Partner

In case you have any questions or problems with your extension you can always ask the Extension Partner for help during the subscription.

Description

Highlights

Select the SMTP server automatically based on the sender address.
Use different SMTP configurations with the same or different mail providers for each sender address.
Use with direct delivery and Shopware's message queue.
Authenticate with a username and password or OAuth 2.0.

Features

Manage SMTP configurations in the Shopware Administration.
Set the host, port, SMTPS and TLS peer verification per sender address.
Store a username and password for each SMTP configuration.
Use OAuth 2.0 with the client credentials flow and SMTP authentication via XOAUTH2.
Obtain and cache OAuth access tokens automatically.

Add optional BCC recipients to each SMTP configuration.
Use Shopware's default mail transport for senders without a matching configuration.

Show more Show less

About the Extension

Choose the SMTP server for each sender address

Send your shop's emails through the SMTP server configured for the sender address. The extension lets you manage multiple SMTP configurations in the Shopware Administration and automatically selects the matching one when an email is sent.

Using an SMTP service that is correctly configured for the sender domain can reduce the risk of emails being rejected or marked as spam. Configure the associated SPF, DKIM and DMARC settings with your provider.

For example, one sales channel can send from shop@example.com, while another uses service@example.org. Configure SMTP settings for each sender address, using different credentials with the same provider or different providers.

Assign servers by sender address

The extension uses the email's sender address to select the SMTP configuration. This works across sales channels: emails with the same sender address use the same configuration, regardless of which sales channel they belong to.

To use different SMTP servers for two sales channels, give them different sender addresses and create a configuration for each address. If no configuration matches, the email is sent through Shopware's default mail transport.

Support for username/password authentication and OAuth 2.0

The extension supports both username/password authentication and OAuth 2.0. You can choose the method for each SMTP configuration to match your provider's requirements.

OAuth 2.0 uses the client credentials flow. The extension obtains access tokens automatically and reuses them until shortly before they expire. Your provider must support this flow and SMTP authentication via XOAUTH2. The installation manual explains the required credentials and setup steps.

Configure the connection and additional recipients

Set the host, port and SMTPS option separately for each sender address.

If required, add BCC addresses to a configuration, for example to receive copies of emails sent from that address. The original recipients are retained.

Support for synchronous and asynchronous email delivery

The extension supports both synchronous direct delivery and asynchronous delivery through Shopware's message queue. You can keep your existing delivery method. In both cases, the matching SMTP configuration is selected automatically based on the sender address.

Choose the SMTP server for each sender address

Assign servers by sender address

Support for username/password authentication and OAuth 2.0

The extension supports both username/password authentication and OAuth 2.0. You can choose the method for each SMTP configuration to match your provider's requirements.

Configure the connection and additional recipients

Set the host, port and SMTPS option separately for each sender address.

If required, add BCC addresses to a configuration, for example to receive copies of emails sent from that address. The original recipients are retained.

Support for synchronous and asynchronous email delivery

This extension is highlighted as part of the Premium Partner Program and can therefore be displayed with priority in the store.

Details

Available: English, German, Swiss German
Latest update: 2 November 2026
Publication date: 20 September 2022
Version: 4.0.1
Category: Administration

Resources

Reviews (1)

Average rating

5.0

Based on 1 reviews

5.0 Functionality

5.0 Usability

5.0 Documentation

5.0 Support

Write a review

If you downloaded this extension you can write a review in the Shopware Account.

Write a review

Sort by

Empfehlenswertes Plugin für flexible E-Mail-Konfiguration in Shopware

5.0

by WeKoTrade GmbH

23 April 2025 10:36

Dieses Plugin ist ein Muss für jeden Shopware-Shop! Es ist echt super, dass man den SMTP-Server pro E-Mail-Adresse individuell konfigurieren kann. Dadurch läuft die Kommunikation viel besser. Die Installation ist ein Kinderspiel, die Benutzung total intuitiv und das Ding läuft immer zuverlässig. Besonders praktisch finde ich, dass ich nun für verschiedene E-Mail-Adressen unterschiedliche Servereinstellungen nutzen kann. Das macht die E-Mail-Integration viel flexibler. Wenn dir professionelle E-Mail-Kommunikation wichtig ist, kann ich dir das nur empfehlen!

5.0 Functionality

5.0 Usability

5.0 Documentation

5.0 Support

About the Extension Partner

swkweb

See all extensions

Partner Status

Shopware
Premium Extension Partner

Details

Ø-Rating: 5

Average rating of 5 out of 5 stars
Partner since: 2015
Extensions: 46

Support

Based in: Germany
Speaks: German, English

Installation and setup

Install and activate the extension under "Extensions -> My extensions".
Open "Settings -> Extensions -> Additional SMTP servers".
Click "Add new SMTP server".
Enter the sender address and connection details, then choose the authentication method as described below.
Save the configuration and trigger an email that uses this sender address.

Set the sender address

Under "Sender address", enter the email address for which this SMTP configuration should be used. Use the address that appears in the outgoing email's From field. Enter the email address without a display name.

You can configure the shop owner's email address per sales channel under "Settings -> Shop -> Basic information". If no sender address is explicitly supplied for an email, Shopware uses this address, or the sender address under "Settings -> System -> Mailer" if the shop owner's address is empty.

You can set a different sender address for individual flow actions. Open the relevant flow in the Flow Builder and edit the "Send email" action. Under "Sender", select "Custom" and enter the desired address under "Custom sender address". Save the action and the flow.

For that email, this address takes precedence over the shop owner's email address. Create an SMTP configuration in the extension with the same sender address so these emails also use the matching SMTP account. This lets you use different SMTP configurations for different flow actions within the same sales channel.

The extension does not assign SMTP servers directly to sales channels. To use different servers for different sales channels, configure different sender addresses and create one SMTP configuration for each. Sales channels with the same sender address share the same configuration.

Each sender address can have only one configuration. Saving a second configuration with the same address fails. If no configuration matches the sender, Shopware's default mail transport is used. A connection or authentication error on a matching server does not cause a fallback to the default transport.

Configure the connection

In "Basic settings", enter the connection details supplied by your mail provider:

Host: The SMTP server's hostname.
Port: The port required by the provider. Enter it explicitly if the provider specifies one.
SMTPS: Enable this for a connection encrypted from the start, usually on port 465. Disable it for SMTP, such as a provider's STARTTLS connection on port 587. STARTTLS is negotiated automatically when supported by the server.

New configurations have SMTPS enabled. If the port is left empty, port 465 is used with SMTPS and port 25 without it. The displayed port is only a placeholder, not a saved value. For STARTTLS on port 587, enter the port explicitly.

Configure authentication

Under "Authentication method", choose one of these options.

Username and password

Enter the credentials supplied by your SMTP provider. The username may differ from the sender address. The account must be authorised to send emails from that address.

OAuth 2.0

Enter the following values from your provider's application configuration:

URL: The token endpoint, not an authorisation or sign-in URL.
Scope: The scope required for SMTP access.
Client ID: The application's client ID.
Client secret: The application's client secret.

The extension requests tokens using the client_credentials grant and sends the client ID and secret using HTTP Basic authentication. It then authenticates to SMTP via XOAUTH2, using the configured sender address as the username.

Your provider must support this combination and grant the application access to the sender's mailbox. The token endpoint's response must contain access_token and the lifetime expires_in as an integer in seconds. Otherwise, sending fails. Flows that require an interactive sign-in, authorisation code or refresh token are not supported. Access tokens are cached and requested again when needed, shortly before expiry.

Configure advanced settings

Leave "Enable TLS peer verification" enabled for normal operation. This verifies the SMTP server's TLS certificate. The option to disable verification is intended for development environments.

Under "BCC recipients", you can optionally add addresses that should receive BCC copies of emails sent through this configuration. The original recipients are retained. Leave the field empty if no copies are needed.

Shopware email settings

The settings under "Settings -> System -> Mailer" also apply to emails sent through a configuration of the extension:

Disable email delivery: If delivery is disabled, including in staging mode, no emails are sent, including those that would use the extension.
Delivery address: An address entered there additionally receives a BCC copy of all emails, including those sent through the extension.

Attachments such as documents from flow actions are sent just as with the default mail transport.

Check delivery

Trigger a Shopware email with the configured sender address and check that it arrives. Repeat this for each sender address and check any configured BCC recipients. Saving a configuration does not send a test email or verify the connection.

If Shopware sends emails asynchronously, make sure its message queue consumers are running. The extension selects the SMTP configuration when the queued email is processed. Also check an email from an address without a matching configuration to verify the default mail transport.

If the wrong server is used, check the actual From address of the email. An address explicitly supplied by a flow or another extension can differ from the shop owner's email address.

Where can I set the sender address for each sales channel?

You can set the shop owner's email address per sales channel under "Settings -> Shop -> Basic information". If it is empty, Shopware uses the sender address under "Settings -> System -> Mailer". A sender address explicitly supplied for an individual email takes precedence. The extension therefore always selects the server based on the email's actual sender address.

How do I use different SMTP servers for different sales channels?

Configure different sender addresses for the sales channels and create one configuration per address under "Settings -> Extensions -> Additional SMTP servers". The extension selects the server based on the sender address, not the sales channel. Sales channels with the same sender address use the same SMTP configuration.

What happens if no SMTP configuration matches the sender address?

The email is sent through Shopware's default mail transport. This lets you create custom SMTP configurations for selected senders only. If a configuration matches, that server is used. A connection or authentication error does not cause a fallback to the default mail transport.

What are the requirements for OAuth 2.0?

Your provider must support the client credentials flow with HTTP Basic authentication at the token endpoint and SMTP authentication via XOAUTH2. The application needs access to the mailbox of the configured sender address. The token endpoint must return `access_token` and `expires_in` as an integer in seconds. Enter the token URL, scope, client ID and client secret. Flows that require an interactive sign-in, authorisation code or refresh token are not supported. The URL must point to the token endpoint, not a sign-in page.

Does the extension work with asynchronous email delivery?

Yes. The extension supports direct delivery and delivery through Shopware's message queue. For asynchronous delivery, the SMTP configuration is selected when the message is processed. The message queue consumers must be running.