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SMTP is an Internet standard protocol for electronic mail transmission. It is used by mail servers and other message transfer agents to send and receive mail messages, and has various extensions for authentication, encryption, binary data transfer, and internationalized email addresses.
Learn about the format, names, values, and functions of HTTP header fields, which are strings sent and received by client and server in every HTTP request and response. See examples of standard and non-standard header fields, and how they are used for content negotiation, authentication, compression, and more.
Login is the process of accessing a computer system or program by identifying and authenticating oneself. Learn about different methods of logging in, such as passwords, fingerprints, and social login, and the origin and usage of the term login.
Sign in to your AOL account to access your email and manage your account information.
AOL Mail offers secure and personalized email with features like AOL Mail, news, and weather for free. You can also access your email on the go with an iOS & Android app and get help from experts.
PHP is a general-purpose scripting language geared towards web development, originally created by Rasmus Lerdorf in 1993. The name PHP stands for the recursive acronym PHP: Hypertext Preprocessor, and it is widely used on the web, with 76.2% of all websites using it as of May 2024.
SMTP Authentication is an extension of SMTP that allows a client to log in using any authentication mechanism supported by the server. It is mainly used by submission servers, where authentication is mandatory, and it can be advertised in the EHLO response with a list of supported methods.
HTTPS is HTTP over TLS, a protocol that encrypts and authenticates the communication between a client and a server. HTTPS protects against eavesdropping, tampering, and man-in-the-middle attacks, and is widely used on the Internet.