GroundmailDocs
Markdown

PrestaShop email with Groundmail

Send PrestaShop store email through Groundmail by entering the Groundmail SMTP relay in PrestaShop's email settings. Order confirmations, order status and shipping updates, account emails and contact form messages then go out from your own domain. These steps cover PrestaShop 8 and 9.

Updated Nov 14, 20263 min read

Prerequisites

  • A Groundmail account with a verified sending domain.
  • An SMTP credential: in the Groundmail dashboard, open SMTP and choose Create SMTP credential. The password (gmsmtp_…) is shown once, so copy it. See SMTP relay.
  • Admin access to the PrestaShop back office.

Everything the store sends through the relay goes out as transactional email, so use it for order, account and notification email. Send opt-in newsletters through the API with category: "newsletter" once your account is approved, and never send cold email.

Set the SMTP parameters

  1. In the back office, go to Advanced Parameters, then E-mail.
  2. Choose Set my own SMTP parameters (for advanced users ONLY) and save.
  3. In the SMTP section that appears, fill in:
PrestaShop field Value
Email domain name Your verified domain, for example yourdomain.com
SMTP server smtp.groundmail.dev
SMTP username groundmail
SMTP password Your SMTP credential (gmsmtp_…)
Encryption See below
Port 587
  1. Click Save.

Encryption by version:

  • PrestaShop 8 and 9.2 and later: choose TLS. On port 587 that upgrades the connection with STARTTLS, which is what the relay expects. Don't choose SSL or port 465.
  • PrestaShop 9.0 and 9.1: choose None. In these versions TLS means a TLS connection from the first byte, which fails on port 587. With None, PrestaShop still upgrades the connection with STARTTLS because the relay offers it.

Match the sender

Go to Shop Parameters, then Contact, open the Stores tab, and set Shop email under contact details to an address on your verified domain, such as orders@yourdomain.com. PrestaShop sends store emails from it.

Test it

Groundmail's simulator addresses work over SMTP and never reach a real inbox. On the Advanced Parameters, E-mail page, under Test your email configuration, enter this in Send a test email to and click Send a test email:

delivered@simulator.groundmail.dev

PrestaShop shows whether the send succeeded. Then confirm in Groundmail: open Emails in the dashboard, or run:

Terminal
curl "https://api.groundmail.dev/emails?limit=5" \
  -H "Authorization: Bearer $GROUNDMAIL_API_KEY"

The email appears with the status delivered and "test": true. Use bounce@simulator.groundmail.dev to see a hard bounce. The full list is in Testing. To test a real order email, place a test order with a customer account that uses the simulator address.

Troubleshooting

The test fails with a connection or TLS error on PrestaShop 9.0 or 9.1. Set Encryption to None and keep port 587, as described above.

Authentication failed. The username must be exactly groundmail, and the password must be the SMTP credential (gmsmtp_…), not an API key (gm_…).

Connection timed out or refused. Check the server is smtp.groundmail.dev and the port is 587. If your host blocks outbound port 587, use 2525 with the same settings.

The message is rejected because of the From address. The shop email must use a verified domain on your account. Until then you can only send from the sandbox sender, and only to your own account email.

A recipient never receives the email. The address may be on your suppression list, usually after a hard bounce. See Suppressions, and create a webhook for email.bounced to get notified.

Sends are deferred. A new account has a daily ramp-up limit, and the Free plan has a daily limit. The relay replies with a temporary error and a retry time. See Sending limits.

Was this page helpful?