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Email Mailers and Sending Services in Icegram Express

Connect Icegram Express to dedicated email sending services and SMTP servers for reliable, high-deliverability email transmission.

A mailer handles the actual delivery of emails from your website to your subscribers’ inboxes. By default, WordPress sends emails using its internal wp_mail() function (PHP mail), which is unauthenticated, prone to landing in spam folders, and frequently restricted by web hosts.

Connecting Icegram Express to a dedicated Email Sending Service (ESS) or SMTP provider ensures fast delivery, proper authentication (SPF, DKIM, and DMARC), and reliable deliverability.

Supported Mailers and Integrations

Icegram Express includes native integrations for leading email infrastructure providers:

  • Microsoft Outlook: Connect to Microsoft 365 or Outlook via Microsoft Graph API. Available in Max plan.
  • Amazon SES: High-volume, extremely cost-effective cloud email service.
  • SendGrid: Popular API-based transactional and marketing email delivery.
  • Mailgun: Developer-friendly email API with strong deliverability.
  • Postmark: High-speed delivery with exceptional reputation monitoring.
  • MailerSend: Clean, modern transactional email API by MailerLite.
  • Mailjet: European-based email service provider with robust deliverability.
  • Sendinblue (Brevo): Full-featured transactional email service.
  • SparkPost: Enterprise email delivery engine.
  • Gmail API: Connect directly to Google Workspace or personal Gmail.
  • Custom SMTP: Connect any standard SMTP server or transactional relay.

How to Configure Custom SMTP

You can connect any custom mail server or transactional relay using SMTP credentials provided by your hosting company or email service.

  1. Navigate to Icegram Express → Settings → Email Sending.

  2. Scroll to the Mailers section and select the SMTP card.

    Select the SMTP mailer card in Icegram Express

    Selecting the SMTP Mailer in Icegram Express

  3. Enter your SMTP connection details:

    • SMTP Host: (e.g., smtp.example.com or smtp.sendgrid.net)
    • Port: Standard ports are 587 (TLS) or 465 (SSL)
    • Encryption: Select TLS or SSL
    • Authentication: Enable if your host requires credentials
    • Username & Password: Enter your mailbox or API key credentials

  4. Click Save Settings.

  5. Send a test email using the Send Test Email tool to verify that the connection works properly.