Only users with a premium license can automatically send emails from Lago to their customers. Please contact us to get access to Lago Cloud and Lago Self-Hosted Premium.

With Lago, sending invoices and credit notes to your customers is simple - you can automatically email them as soon as they are created.

Lago will never ask for payment details or personal information.

SMTP setup on Lago Cloud

You don’t have to worry about SMTP settings with Lago, we take care of it, so you can sit back and relax.

SMTP setup on Lago Self-hosted Premium

In order to use the email feature, please configure your environment variables as described here.

Prerequisites for sending emails

To send emails to your customers, you will need to:

  1. Define an organization email in Settings > Organization;
  2. Optionally, add your organization’s logo in Settings > Organization;
  3. Turn on the relevant email scenarios; and
  4. Define the customer’s email address during customer creation/edition.
  5. To send invoices to multiple recipients, define multiple email addresses at the customer level, separated by commas. (e.g.,,

Email scenarios

Lago sends emails to your customers in two scenarios: when an invoice is finalized (i.e. subscription invoices, one-off invoices, invoices related to credit purchases), and when a credit note is issued for a customer.

By default, both scenarios are switched off. To turn these scenarios on/off:

  1. Go to Settings;
  2. Open the Emails tab;
  3. Toggle each scenario on/off; or
  4. Click on a scenario to see the corresponding email; and
  5. Use the toggle in the upper-right corner to switch this scenario on/off.

To avoid sending too many notifications to customers, we have deactivated emails for invoices without fees.

Although invoices with "fees_amount_cents": 0 are not sent to customers by email, they are available in the database and user interface.

Email locale

The content of the email will be based on the organization or customer’s document locale. This means that the email will have the same locale as the invoice sent.

Email sending address

For the cloud version, Lago uses as the sending email address. Any responses from your customers will be directed to the email address you have established for your organization in the organization settings.

Email template

Email template

As mentioned above, some information in the email template can be customized based on the settings of your account, including:

  1. The logo of your organization;
  2. The name of your organization; and
  3. The email address of your organization.