How To Configure SendGrid SMTP

Updated on:

May 12, 2026

By:

Use this interactive demo to learn how to set up SendGrid SMTP with an API key and verified sender identity.

Quick summary

Configuring SendGrid SMTP requires generating an API key with full access and setting up a verified sender identity. Once complete, you can use SendGrid's SMTP relay (smtp.sendgrid.net, port 587) with your API key as the password in any email platform.

Steps

Go to Settings in the left sidebar and select API Keys.
Click the Create API Key button.
Enter a Name for your API key and set the access level to Full Access.
Save your API key immediately — it will not be shown again.
Navigate to Create Sender Identity from the settings guide.
Fill in your sender identity details and click Create.
Enter your SMTP settings wherever you plan to send email: SMTP server smtp.sendgrid.net, username apikey, port 587, and your generated API key as the password.
Check your inbox and verify the sender via the confirmation email.

📌 Why this matters

Configuring SendGrid SMTP correctly is essential for reliably delivering transactional and marketing emails from any application or platform. SendGrid's SMTP relay gives developers and marketers a scalable, trusted email infrastructure without managing their own mail servers. Proper API key setup and sender identity verification ensure emails reach the inbox rather than the spam folder, protecting sender reputation. Whether you're connecting an e-commerce platform, a CRM, or a custom app, SendGrid SMTP provides the deliverability and security controls modern email sending demands.

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