How to configure SMTP for reliable bulk delivery

September 17, 2026

Best practices for SMTP providers, rate limits, and authentication.

Choose a reputable SMTP provider, enable TLS, and respect provider rate limits. Authenticate your domain with SPF, DKIM, and DMARC. Warm new IPs gradually and monitor bounces. In BulkEmail, add each SMTP account under providers, test connectivity, then attach the provider when you create a campaign.

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