Why smtp authentication

Instructions for enabling SMTP authentication will vary depending on the email client being used. We have provided the steps below for a few popular email clients.

For further assistance, you may contact our Chat Support or Phone Support via You may also refer to our Knowledge Base articles to help answer common questions and guide you through various setup, configuration, and troubleshooting steps. Click the Users option from the menu to the left, then choose Active users.

Select the user, and in the menu that pops out to the side, click the Mail tab. For more on the differences between these ports, please check out our previous discussion. As of Q4 of , Twilio SendGrid has enforced two-factor authentication for all accounts. This is far more secure than a username and password for your requests, not only because of the length of the alphanumeric string but also because you can restrict API permissions and remove scopes at any time.

This feature ensures only you and your team from known specified IP addresses can access the account. For more information on this feature, please see our documentation. Leveraging a secure SMTP server ensures the protection of your email infrastructure against spam and spoofing attacks.

Security, flexibility, and seamless integration are all factors to consider for your next SMTP provider. For more information on SMTP servers, check out the following resources:. Partner with the email service trusted by developers and marketers for time-savings, scalability, and delivery expertise.

What is SMTP authentication? What happens without SMTP authentication? Two-factor authentication As of Q4 of , Twilio SendGrid has enforced two-factor authentication for all accounts. Sign up to get our latest blog posts in your inbox.

Click this option if you wish to exempt messages from the Authentication is always required when mail is from local accounts option when they come from one of your domain mail servers.

Check this box if you wish to exempt the local account from the SMTP authentication requirement when the message is from a whitelisted IP address or host. Authentication credentials must match those of the email sender. Use this option if you wish to require a sender to use only his own credentials for authentication. So, for example, frank example. If he attempted to authenticate using frank02 example.