> For the complete documentation index, see [llms.txt](https://docs.authgear.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.authgear.com/customization/custom-email-provider.md).
# Custom Email Provider
Optimize for email deliverability by using your own SMTP server to send Authgear Emails (such as forgot password, verifications) in your own domains.
To send Authgear emails to end-users with your own domain, e.g. `support@myapp.com`. You will need to configure the external SMTP provider.
Authgear currently supports **SendGrid** and other custom SMTP Providers.
## Send from an email address under your domain
The sender address can be configured by changing the value of the`email.default.sender` key in the localization JSON. Go to **Portal** > **Branding** > **Custom Text** and add/change the value of `email.default.sender` to your own email address, for example `no-replay@myapp.com`, and **Save** the settings. The value can be set separately for each locale.
## Sender domain authentication
Before adding the email service provider to Authgear, make sure the sender domain is verified and authenticated on the email service. For example, your domain `myapp.com` should be configured in your SendGrid account so Authgear can use the account to send emails with `no-reply@myapp.com`.
Follow the instructions from the email service provider for setting up your domain:
* [How to set up domain authentication on SendGrid](https://docs.sendgrid.com/ui/account-and-settings/how-to-set-up-domain-authentication)
## Configure the external SMTP provider
The external SMTP provider can be set up in **Portal** > **Advanced** > **Custom Email Provider**. Enable the **Use my own provider** toggle to see the fields.
### Use SendGrid as external SMTP provider
1. Log in to your SendGrid account
2. Create API Key in **Settings** > **API Keys**
3. Set the **API Key Name** for your reference the choose **Restricted Access** under **API Key Permissions**
4. Under **Access Details,** expand **Mail Send** and give **Full Access** to the **Mail Send** permission
5. Click **Create & View.** Copy the API key created and save it somewhere safe
6. In Authgear **Portal**, navigate to **Custom Email Provider**
7. Enable **Use my own provider**.
8. Choose **SendGrid** and paste the API key you copied, and **Save**
9. You can send a test email to check the configuration
### Using other SMTP Providers
Other SMTP providers can be set manually by providing the **Host**, **Port**, **Username**, and **Password**. They can be obtained from the documentation or instructions from your email service provider.
---
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