Frequently Asked Questions
There are several different methods that can be used to send through SendGrid. Take a look at our Integrate with SendGrid page for information on how to connect with SMTP or our Web API.
API Keys allow you to generate an authentication credential that is separate from your username and password. They are independent from one another and are easily disposable. You should create unique API keys for each of your applications or servers so that you can easily revoke them without disrupting other systems if needed. For more information, click here.
Your SMTP username and password is the same username and password you provided when you signed up for SendGrid. We use the same set of credentials as the default for the website access and SMTP authentication. For more information, click here.
Marketing Campaigns is a powerful tool that can easily send beautiful, well-targeted email marketing campaigns. More information about all of the features of Marketing Campaigns can he found here.
Information on how to add an unsubscribe link and create and manage Unsubscribe Groups can be found here.
Information on how to manage your Marketing Campaigns contacts can be found here.
Information on how to remove unusable contacts can be found here.
Answers to many common questions about Marketing Campaigns can be found here.
Whitelabeling is the functionality that shows ISPs that SendGrid has your permission to send emails on your behalf. This permission is given by the act of pointing very specific DNS entries from your domain registrar to SendGrid. To learn more about how and why to whitelabel, see the article listed here.
For troubleshooting of DNS record validation, chek the article listed here.
There are numerous reasons why email providers place messages into the Spam folder. While there is no surefire way to ensure your messages arrive into the inbox of your recipients, there are however industry standards and best practices you can follow to give your emails the best chance of meeting all mail provider and spam filter expectations.
Check out our Deliverability 101 guide to get started with general guidelines on email ettiquite and sending practices.
After reading our Deliverability 101 guide, take a deep dive into advanced email delivery with Sendgrid's Official Email Deliverability Guide.
For troubleshooting tips on this situation, please see the article listed here.
For explantation of bounces, please see the article listed here.
For explantation of drops, please see the article listed here.
For explantation of email throttling and deferral messages, please see the article listed here.