This email component library supports SMTP, POP3, and IMAP Xbase protocols, and utilizes a straightforward API for sending and receiving emails. It can handle attachments encoded in MIME Base64 and quoted-printable formats, and supports SSL/TLS, ISO-8859, and UTF-8 messages, as well as authentication for SMTP and POP3.

The software also provides options to get the number of messages on your email server, header lines from any email on your server without reading the entire email, and deleting any email on the server without downloading the entire email. You can also copy any email on the server without deleting it or even receive any email on your server, including MIME attachments. SEE4XB can download email from your server, automatically decoding MIME attachments and remove incoming attachments' content.
It has dozens of switches to control how email is sent and received, can run up to 32 independent threads concurrently, and supports SMTP (ESMTP) and POP3 authentication. SEE4XB also supports multiple (simultaneous) connections and bulk mail on a distribution list. The software can set a return receipt, add TO, CC, and BCC recipients, and includes multiple Xbase example programs. SEE4XB does not depend on support libraries but only calls to core Windows API functions. As a result, it offers royalty-free distribution with your compiled application.
SEE4XB even offers C source code, free technical support, and updates for one year. Additionally, it has a fully functional evaluation version available, works with all 32-bit versions of Xbase and 32-bit and 64-bit Windows through Windows 11. In conclusion, SEE4XB is an excellent software application that offers numerous features and supports various connections for email communication.
Version 8.6: Increased password buffer to 3072 (3K) to support XOAUTH2 protocol. Added functions seeMakeXOAuth2N, seeEncodeBase64, seeDecodeBase64, seeShortToByte2, seeByteToShort2. Added diagnostics to log file for XOAUTH2 protocol. Added errors codes SEE_AUTH_SHORT, SEE_AUTH_BAD_BEG, and SEE_AUTH_BAD_END.
Version 8.4.1: Added Message-ID header to outgoing email. Added diagnostics to decoding UTF-8 filenames. Fixed problem if SSL config string did not end with LF. Increased OAUTH2 password buffer to 2048 bytes. Added function seeMakeXOAuth2() that creates OAUTH2 password string.