As a reseller, you can help your customers secure their websites with SSL certificates. Plesk makes it easy to provision Let's Encrypt certificates across multiple customer domains.

### Provisioning SSL for a Single Customer Domain

1. Log in to **Plesk**.
2. Go to **Domains**.
3. Find the customer domain.
4. Click **SSL/TLS Certificates**.
5. Click **Install a free basic certificate provided by Let's Encrypt**.
6. Select the options (domain, www, webmail).
7. Click **Get it free**.

### Provisioning SSL for Multiple Domains at Once

1. Go to **Domains**.
2. Select multiple domains using checkboxes.
3. Click **SSL/TLS Certificates** → **Secure domains**.
4. Follow the Let's Encrypt setup wizard.

### Important Notes

- Each domain must be publicly accessible and resolving to the server for certificate issuance.
- Let's Encrypt has rate limits — do not attempt to secure more than 50 domains at once.

### Troubleshooting

**Certificate issuance fails:**

- Verify the domain resolves to the correct server IP.
- Check that port 80 is accessible for HTTP validation.

### Related Guides

- [Enable auto-renewal](/hc/help/en/articles/how-to-enable-ssl-auto-renewal-in-plesk)
- [Check status across domains](/hc/help/en/articles/how-to-check-ssl-status-across-plesk-domains)
- [Issue wildcard certs](/hc/help/en/articles/how-to-issue-wildcard-ssl-certificates-for-plesk-customers)