SMTP Email Setup for OpenCart

Description

If OpenCart emails about new orders, registration confirmation or password recovery go to spam or do not arrive at all — that is a direct loss of customers. The problem most often is that OpenCart sends mail via PHP mail() by default, and most mail servers reject or mark as spam messages without SPF/DKIM signatures.

We configure SMTP sending for OpenCart and ocStore via a reliable mail service: Gmail, SendGrid, Postmark, Mailgun or own SMTP server. In parallel we configure SPF and DKIM for the domain.

Configuration Scope

• Mail service selection based on email volume and budget
• SMTP configuration in OpenCart admin panel (host, port, login, password)
• Test send and inbox delivery verification (not spam)
• SPF record configuration for domain in DNS
• DKIM configuration via mail service or own server
• Verification via mail-tester.com or equivalent tool

Mail Services

For small stores (up to 500 emails per month) Gmail or Zoho Mail is suitable. For medium and large stores — we recommend SendGrid or Postmark: free tiers up to 100–1000 emails per day, detailed delivery statistics.