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HomeESPsSendGridWhat is StartTLS?

What is StartTLS?

The blog post “What is STARTTLS?” is a beginner’s guide to understanding the basic concepts of email encryption. STARTTLS is a protocol that allows email clients and servers to upgrade an existing insecure connection to a secure one using TLS encryption. The main objective of STARTTLS is to ensure that sensitive information, such as passwords and email contents, is protected from eavesdropping and tampering during transmission. The post explains the benefits of using STARTTLS, including increased security, improved privacy, and enhanced email delivery. The blog also covers common misconceptions about STARTTLS and offers tips for implementing it in an email system. The key takeaway from the post is that STARTTLS is an important aspect of email security, and it is crucial for organizations to implement it to protect sensitive information from potential security threats.


Excerpt from the main article:

Ever wonder how email is securely sent from one server to another? When using Simple Mail Transfer Protocol (SMTP) to send mail, we rely on a combination of StartTLS and Transport Layer Security (TLS) or Secure Sockets Layer (SSL) to encrypt our mail and help it safely land in the inbox.  But what is StartTLS? StartTLS is a protocol command used to inform the email server that the email client wants to upgrade from an insecure connection to a secure one using TLS or SSL. StartTLS is used with SMTP and IMAP, while POP3 uses the slightly different command for encryption


What is StartTLS? – SendGrid was originally published on SendGrid Email Deliverability Blog | SendGrid

Richelo Killian
Richelo Killianhttps://www.inboxjam.com/
Richelo "Rich" Killian has over 30 years of experience in the information technology field, and more than 15 years of experience in email deliverability and marketing.
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