SendGrid SMTP SMTP Settings (Server, Port & Setup)

To send through SendGrid SMTP, use these SMTP settings.

SendGrid SMTP SMTP settings

• Server: smtp.sendgrid.net
• Port: 587 or 465
• Auth: the literal username 'apikey' plus your API key

Deliverability still matters

Correct SMTP settings get mail accepted, but SPF, DKIM, DMARC and a clean sending reputation decide whether it lands in the inbox.

How Rainmail helps

Rainmail sends from your own domain on a dedicated, isolated IP with SPF, DKIM, DMARC, reverse-DNS and managed warm-up handled for you, a REST API, and an AI watching deliverability — and it welcomes senders SES, SendGrid and Mailchimp reject, from $8. Run the free checker or see plans.