Zip Component, Email Component, Encryption Component ActiveX Control for Zip Compression .NET Components for ASP.NET
ActiveX and .NET Components for Zip Compression, Encryption, Email, XML, S/MIME, HTML Email, Character Encoding, Digital Certificates, FTP, and more ASP Email ActiveX Component

Chilkat Software Blog Posts

Most Recent Chilkat Tech Notes
(click here for the most recent blog posts)

May 15, 2008

PHP Blowfish Encryption

May 9, 2008

Understanding PHP AES Encryption

April 28, 2008

Deleting Email via POP3 on Novell Groupwise

C++ HTTP Library - AddFileForUpload

April 25, 2008

MFC CString <--> CkString

April 24, 2008

HTML-to-Text Unlock Code?

552 4.3.1 Session size exceeds fixed maximum session size

VPN Defender Blocks HTTP Requests

April 23, 2008

How FTP Restart Works

CRC Calculation for a File

Bounce email processing question: CopyMail vs. GetAllHeaders?

Upload the data using WS_FTP Pro using the "Use unencrypted Command channel" option?

April 17, 2008

Conditional Deployment: x64 vs win32

April 15, 2008

WriteExe file size?

OLE Error code 0×80020006: unknown name.

April 7, 2008

Unresolved External: CkString::getUnicode

March 28, 2008

Shift_JIS File –> String –> SQL Server DB –> String –> Shift_JIS File

FTP NumFilesAndDirs Hanging?

March 27, 2008

Complete C# ASP.NET HTTP Upload Example

Saving Email with Embedded Images to File or Database

March 26, 2008

Using ActiveX in PHP

Convert XFDL base64-gzip to XML string

_bstr_t and Converting to Unicode (C++)

March 25, 2008

Connecting to the Inovis EDI VAN with FTP/SSL

March 24, 2008

C++ Source for Online Spam-Assassin Score Tester

8-Bit MIME in C++

March 19, 2008

Loading an Email Object from a Byte Array

March 17, 2008

Chilkat Java for x64 (64-bit Windows Platform)

Date ArgumentOutOfRangeException

Using the Chilkat .NET Assembly in a Windows Service

SSIS Script using Chilkat .NET 2.0 Assembly (ChilkatDotNet2.dll)

Creating ActiveX in an Excel Macro

March 13, 2008

How to Upload Files to Tumbleweed’s SecureTransport FTPS Server

FTP Last-Modified Times Inconsistent between GetXmlDirListing and GetLastModifiedTimeByName

IMAP NTLM Login with Default Credentials

VB.NET to Extract Files from MIME

Assembly’s manifest definition does not match the assembly reference

WSAECONNABORTED An established connection was aborted by the software in your host machine.

March 5, 2008

VB.NET Socket Server as a Windows Service

March 3, 2008

Can I Send Email through Outlook?

February 28, 2008

Zip CRC Calculation

FTP Text Files on z/OS Servers (MVS Operating Systems)

Chilkat Crypt2 PKI Encryption vs. Chilkat RSA Encryption

C# to Display IMAP Folders in TreeView

Loading .NET Assemblies from a Windows Service: System.IO.FileNotFoundException

February 25, 2008

Chilkat SMTPQ Windows Service for Sending Email

Encrypt here, Decrypt there…

Progress Monitoring in ASP.NET

February 19, 2008

Display HTML Email in IFrame (or Frame)

ASP to Display HTML Email

February 18, 2008

C# - Load Assembly from Specific Directory Path

February 15, 2008

Using IMAP PeekMode to prevent messages from being marked SEEN

"530 access denied" vs "530 login incorrect"

February 14, 2008

Java System.loadLibrary - Loading a Native DLL at Runtime

February 13, 2008

MX Lookup

Email Status Flags: POP3 vs. IMAP

February 12, 2008

C# to Send Big5 Email

error C2061: syntax error : identifier ‘SYSTEMTIME’

Chilkat Visual Studio 2008 / VC++ 9.0 Build Ready

error C2061: syntax error : identifier ‘_TCHAR’

February 11, 2008

Processing a Large POP3 Mailbox

Prevent VB.NET User-Interface from Freezing

February 10, 2008


February 7, 2008

Amazon AIM: Uploading Inventory Management Files

Check an Email’s Spam Assassin Score

February 6, 2008

XMLHttpRequest Examples using Chilkat HTTP

How to use HTTPS to submit a Credit Card Transaction to PayPal using NVP

FTP Examples: Implicit TLS v1.0 (SSL v3.1) on Port 990

Creating a Self-Signed X.509 Certificate in C#

AcquireCredentialsHandle: SEC_E_NO_CREDENTIALS when using Client-Side SSL Certificate

C# IMAP Progress Monitoring

February 5, 2008

Gmail SMTP on Port 587 (STARTTLS)

GMail SMTP on Port 465 (SSL)

How to Register an ActiveX DLL on Vista with regsvr32

C++ Source to Validate Heaps and Calculate Heap Size

January 30, 2008

Display HTML Email in C# and VB.NET

The call to Server.CreateObject failed while checking permissions. Access is denied to this object.

Server object, ASP 0177 (0×8007007E)

Server object, ASP 0177 (0×800401F3) Invalid class string

XML Content vs Children

Email Importance / Priority

January 25, 2008

New Example: Select a Specific Certificate from Current User or Local Machine Cert Stores for Encrypted Email

New Example: Using a .cer File to Send Encrypted Email.

January 24, 2008

Zip SetCompressionLevel seems to have no effect?

POP3 TransferMail / CopyMail does not see new email?

Downloading an FTP file that hasn’t finished uploading?

Sending Encrypted "Forgot-Password" Email?

January 23, 2008

ActiveX Deployment: ChilkatCert.dll and ChilkatUtil.dll?

January 22, 2008

Charset (Character Encodings) Supported by Chilkat Components

January 18, 2008

FTP Resume / Restart — 550 - The process cannot access the file because it is being used by another process.

January 17, 2008

Sending Email and Saving a Copy in an IMAP "Sent" Mailbox

PHP 256-bit AES Encryption is Non-Standard

Matching .NET Framework 256-bit AES CBC Encryption with ActiveX

PHP 128-bit AES CBC Encryption to Match Chilkat ActiveX Encryption

Matching PHP 5.2.5 AES Encryption with ActiveX AES Encryption

Email Component Tested with Outlook 2003 / 2007?

January 16, 2008

The MailMan.Filter POP3 property

Windows Filesystem Case Sensitivity — Windows *can* be case sensitive

January 15, 2008

Non-US-ASCII Characters in Filenames within a Zip Archive

Embedding Flash in Email

C++ Incremental Linking Increases EXE Size

January 10, 2008

Why BCC email addresses do not appear in the email header.

January 9, 2008

Microsoft .NET Framework 3.5 Compatibility

SMTP: 452 4.3.1 Out of memory

FTP: 550 Read access denied

January 4, 2008

POP3 Sessions

Attached Email Messages


December 28, 2007

How to Add Cookies to an HTTP Request

Replace Sender Header Field?

POP3 to SMTP Forwarder

December 27, 2007

SHA-1 Hash Examples in C#, ASP, SQL Server, C++, Delphi, FoxPro, Java, Perl, Ruby, Python, VB.NET, VB6, VBScript

.pfx = .p12

Using a Client-Side Certificate with an IMAP SSL Connection

December 26, 2007

DeleteBundle cannot delete all the emails?

Display Russian Text in VB6

December 21, 2007

Send Japanese Email in VB.NET

December 18, 2007

Using Chilkat FTP2 in Client-Side Javascript

FTP Error: No socket exists for sending (2)

FTP from Client to Server and ASP/ASP.NET Architecture

Embedding .zip in a DLL


Sending Email to 30,000 Clients

Saving Base64 Encoded Email Attachment to Byte Array or Filesystem

December 17, 2007

Server.CreateObject Failed

SetCompressionLevel w/ Self-Extracting EXE

SMTP 553-Relaying Denied

Retrieve only the new text from the body, not the whole history…

AutoGenMessageId - Generates unique Message IDs

December 14, 2007

IMAP: How to Copy Email from One Mailbox to Another

Encryption Algorithm Cheat Sheet

December 13, 2007

Chilkat FTP2 implements MODE Z

Email Messages Marked as Read

December 11, 2007

How to Get the Size of a Large File (> 4 GB) on an FTP Server (64-bit integer)

December 10, 2007

HTTP 500 - Server Too Busy

ASP.NET DLL Size — Does size matter?

Skipping a sub-directory in DownloadTree

POP3 Session and UIDLs

December 7, 2007


December 6, 2007

Setting the IMAP Separator Char in VB.NET and C#

December 5, 2007

URL Encoding in Visual Basic 6.0

Hashing Strings: Matching VB6 Results with .NET (C# / VB.NET) Results

December 4, 2007

(from PFX) How to Extract Public/Private Keys and Certs into String Variables

FTP: ReadTimeout and IdleTimeoutMs on Connect

Handling characters in filenames in Zip archives that are illegal in DOS/Windows

425 Can’t open data connection.

Extracting last email body and not all previous replies/forwards/etc.

ASN1 bad tag value met.

November 30, 2007

Licensing Infrastructure — There is none.

MFC Compile Errors - FILETIME, SYSTEMTIME, wchar_t not defined?

FTP2.NumFilesAndDirs — Special considerations

Hello World ActiveX

Windows Vista Pitfall #320138 — FTP w/out Permission - WSAENETDOWN

Installing ActiveX Components in Delphi RAD 2007

November 29, 2007

Generate RSA Key Pair and Export to PEM

How to Deploy ActiveX with your Application

November 28, 2007

Unzip from an AES Encrypted Zip into a String Variable

Creating p7s Detached Signature using HSM / SmartCard

Zip C++ Progress Monitoring Example

November 27, 2007

Binary Data in Delphi

Running out of Ports for FTP Data Transfers

SocketError: WSAECONNABORTED when Sending Email (SMTP)

November 26, 2007

ASP Pitfall: On Error Resume Next

NULL Characters in Encrypted Data?

November 21, 2007

java.lang.UnsatisfiedLinkError: no chilkat in java.library.path

November 20, 2007

FTP Events (for Chilkat FTP2 Component)

Writing LastErrorText to ASP Response

SMTP: An existing connection was forcibly closed by the remote host.

C++ Link Errors

Unsupported Compression Method

Email Attachments vs. Embedded Images (Related Items)

IMAP UID Ranges in Search Method

November 19, 2007

Reminder: Thursday, Nov 22 is a holiday in the USA

C# / VB.NET to Embed Binary Image in XML w/ Compression, Encryption

Checking multiple POP3 accounts simultaneously?

Perl can’t locate loadable object for module chilkat in @INC

regsvr32 on Vista

November 16, 2007

SMTP and POP3 Email Events

550 5.7.1 Unable to relay

November 15, 2007

Clarification on AddTo, AddCC, AddBcc, AddMultipleTo, AddMultipleCC, AddMultipleBcc

VerifyRecipients - Verify SMTP Email Addresses

Using undisclosed recipients / Send Failed

November 14, 2007

WSAEWOULDBLOCK when trying to establish FTP2 Data Connection in Passive Mode with SSL/TLS

VerifySmtpLogin reports success with any login/password?

Attaching a Message (.eml file) to an Email (content-type = message/rfc822)

November 13, 2007

Deleting Email Older than N Days from POP3 Mailbox

Hashing: Can I go backwards to restore the original data?

How do I FTP download to a specific local directory?

504 Invalid PORT address

sockError: 10053, WSAECONNABORTED An established connection was aborted by the software in your host machine

POP3 - Reading Email that Arrived after the Session Started

Verify the Exact MIME Passed to an SMTP Server

November 12, 2007

ASP: The object does not support this property or method

November 9, 2007

Progress Monitoring in VB6 without Freezing the User Interface

Matching Encryption Results w/ cryptix.jce.provider.key.RawSecretKey

November 8, 2007

Chilkat RAR / UnRAR Freeware — Pre-Release Available

November 7, 2007

New HTTPS Example: Post to

November 6, 2007

FTP Bandwidth Throttling

November 5, 2007

Amazon Inventory Management System (AIMS) Web-Services Example

November 2, 2007

MHT Javascript Limitation

HotMail POP3 Access

November 1, 2007

Convert utf-8 to ANSI (Windows-1252) and back in Visual C++ 6.0 (and 7.0, 8.0)

Convert .key File to .pvk Private Key File

How to Check if Digital Certificate Expired

Virtualization - Applied to Web Hosting

October 30, 2007

FTP XCRC for C#, VB.NET, ASP, Perl, Python, Ruby, Java, Delphi, FoxPro, C++, VB6, etc.

October 29, 2007

Byte Array Declaration with Initializers in Python, Perl, Ruby, Java, C#, VB.NET, etc.

Received Header Indicates an Unknown Host

October 26, 2007

Events not Firing for Asynchronous FTP (Background Upload/Downloads)

October 25, 2007

Port Range for Passive FTP? Remote Access API Example

Zipping a Single File: AppendOneFileOrDir and PathPrefix

POP3 Session Log - Using the Pop3SessionLog property

October 24, 2007

Check for NULL, null, Nothing, nil, None

Send Email with 8bit Content-Transfer-Encoding

October 23, 2007

FTP PutTree - MKD Cannot create a file when that file already exists.

October 22, 2007

HMAC MD5 in VB6, ASP, Java, Perl, Python, Ruby, Delphi, FoxPro, C#, VB.NET, VBScript, C++, SQL Server

Compare Chilkat 3DES Results with .NET Triple-DES Results

Compare Chilkat DES Encryption Results with .NET Results

3DES (Triple-DES) in C#

56-bit DES Encryption in C# (Using .NET Framework, not Chilkat)

October 20, 2007

Using ARC4 Stream Encryption as a PRNG (Pseudo-Random Number Generator)

New Chilkat Crypt Feature: FirstChunk/LastChunk properties

October 19, 2007

How to Read a utf-8 File into a VB.NET String

Sending Email without a Mail Server (so-to-speak)

SSL with Client Certificate: The SetSslClientCert method

ASP.NET Current Working Directory is C:\WINDOWS\system32

HTTPS Upload Examples (HTTP Upload over SSL)

Invalid Token error when trying to connect with SSL (SMTP, POP3, IMAP, FTP, HTTP)

October 18, 2007

C# to convert from utf-8 bytes to string and back.

Invalid status code in AUTH TLS response (334)

October 17, 2007

ARC4 Stream Cipher Example Programs

Chilkat adding support for 3DES, DES, RC2, and ARC4

October 15, 2007

Efficient Append to Existing Zip

SMTP SSL Clarification

October 8, 2007

IIS 6.0 HTTP Post Size Limitation

October 5, 2007

Read Receipt vs. Delivery Receipt when Sending Email

A trappable error (C0000005) occurred in an external object. The script cannot continue running.

October 4, 2007

FTP2 ConnectFailReason property

Creating a Writeable ASP Directory for IIS 5.1 on Windows XP

Install PFX for use by ASP / ASP.NET

October 2, 2007

Using Chilkat in ASP.NET using Only a Text Editor (w/out Visual Studio)

September 26, 2007

Using Delphi "As" for Type-Casting with Chilkat ActiveX Components

September 25, 2007

C# SMTP Send in Background Thread with Progress Monitoring and Abort

ActiveX support for Vista, x64?

Invalid token (80090308) when connecting to FTP server

Script Injection Attacks : A potentially dangerous Request.Form value was detected from the client

September 24, 2007

FTP Upload/Download in C# Background Threads with Progress Monitoring and Abort

September 23, 2007

Experimentation with .NET Garbage Collection

WSAECONNABORTED - An understandable explanation.

September 19, 2007

What is the Charset in FTP2’s PutFileFromTextData Method?

September 18, 2007

AES Zip Encryption and 7-Zip

September 17, 2007

Automatically Determine FTP Proxy Method

September 14, 2007

Synchronize Local Filesystem Directory Tree with FTP Server

ExeNoInterface doesn’t work? (My self-extracting EXE still displays a dialog..)

IIS 6.0 Max Content-Length Metabase Property

September 13, 2007

Building .NET Application for both 32-bit and 64-bit Platforms

September 11, 2007

HTTP Chunked Responses, Resume HTTP Downloads, and IIS 4GB Limitations

September 7, 2007

FTP NumFilesAndDirs sometimes freezes my VB6 app?

ClickOnce Deployment with Chilkat .NET Assembly

September 6, 2007

ASP Code to get the Complete MIME for an HTTP Header + Body

Out of Memory Error when trying to encrypt a large file

Chilkat Bundle Licensing Details

FTP Detect Restart Ability

September 5, 2007

MSXML2.DOMDocument converts to CRLF line endings — careful when hashing!

Remote host said: 554 Mail appears to be unsolicited

September 4, 2007

SendEmail: WSAEWOULDBLOCK The socket would block.

How to find the CSP (Cryptographic Service Providers) Currently Installed on a Computer

August 31, 2007

C# - Write Zip with Progress Monitoring and Abort Capability

August 30, 2007

ASP.NET: System.InvalidOperationException: Mutex could not be created.

August 29, 2007

How to Pipe CGI Output to ASP

Using Chilkat .NET Assembly in SSIS

Why Can’t I Change the FTP Remote Directory to C:\Temp?

August 27, 2007

Active vs. Passive FTP

August 23, 2007

Stream Binary File to ASP Response

Stream Binary .ZIP to ASP Response

August 16, 2007

Skype Outage

August 15, 2007

How to run ChilkatDotNet2.dll in ASP.NET 2.0 w/ Medium Trust

August 14, 2007

ASP.NET Shared Web Hosting Provider Supporting Chilkat

August 9, 2007

How to Discover FTP Settings that Work via DetermineSettings

ISP Blocks after Sending N Consecutive Emails

August 7, 2007

Adding a .mht File to an Email as a File Attachment

Getting date parts from Email Date Header Field in Ruby

August 6, 2007

IMAP Mailbox (sub-folder) Hierarchy Separator Character

XML: How store a node and all its children to a string memory buffer

August 2, 2007

Reading "Unread" POP3 Email

FTP Download from VAX/VMS Servers

FTP Site "mapin" Command

August 1, 2007

Controllling the Content-Transfer-Encoding of the Email Body

Mapping System.Text.Encoding to Email.Charset

New Example: Open and Unzip an AES Encrypted Zip

Choosing the Correct Chilkat .lib in Visual C++ 8.0

Re-encoding HTML Entities in C#

Writing utf-8 File with and without Preamble in C#

July 31, 2007

FTP Resume/Restart Upload and Download Functionality added to Pre-Release

July 30, 2007

New POP3 Session Management Features

New Self-Extracting EXE Functionality available in Pre-Release

July 28, 2007

FTP SSL vs non-SSL Performance Comparison

July 27, 2007

FTP Progress Monitoring with FileZilla Server (and others)

About Read Timeouts — is is really an idle timeout.

July 26, 2007

Diagnosing SMTP Failures including WSAEWouldBlock

July 24, 2007

ASP.NET 2.0 - Could not load file or assembly: win32 vs x64 DLL

ASP.NET 2.0 - Could not load file or assembly: Medium Trust issue.

ASP.NET 2.0 - Could not load file or assembly: DLL is wrong version

ASP.NET 2.0 - Could not load file or assembly: DLL not in bin directory

July 23, 2007

Using CkStringArray in Delphi

July 19, 2007

Auto-Linking URLs in C# and VB.NET

Using HTTP Proxy with Chilkat MHT

Issue with Checkpoint Firewall and FTP

July 18, 2007

error C2061: syntax error : identifier ‘SYSTEMTIME’

July 17, 2007

Validating an Email Address - Unfortunately, Nothing is Perfect

July 16, 2007

RSA Encryption not intended for Bulk Data Encryption

July 13, 2007

Parsing Received Email Header Fields in VB6

July 12, 2007

Using Chilkat .NET in Managed C++

New FTP2 SSL Certificate Functionality

Re-Importing an ActiveX in Delphi

POP3 - Create Folders and Move Email from Inbox to Other Folder?

July 11, 2007

HTML Entity Decoding in C# and VB.NET

POP3 Sub-Mailboxes

IP Hostname vs IPv4 dot-decimal notation

Sending Encrypted Email using Chilkat to be Received in Outlook

NTLM current-logged-on-user Authentication

HTTP Upload Proxy support added.

July 10, 2007

Adding a Reference to the Chilkat .NET Assembly

July 9, 2007

Creating Self-Extracting EXE’s for Windows 98/95/ME

July 7, 2007

Sending Email in Visual DataFlex

Using ActiveX in Visual DataFlex 12.0

July 6, 2007

How to Digitally Sign your EXE, DLL, or CAB

Mangling binary data with System.Text.ASCIIEncoding() and Chilkat Zip Compatibility

Chilkat Skype Name and Number

Pre-Release Downloads Available

June 27, 2007

New HTTP ActiveX released with Improved Progress Monitoring

June 25, 2007

Free Secure FTP Test Server

June 21, 2007

Email Bounce Testing

June 19, 2007

New FTP2 Property: Account

FTP-Based EDI Systems Supported by Chilkat FTP2

New Version Released (8.2.2)

June 15, 2007

C# to Convert iso-8859-1 to utf-8

June 14, 2007

Setup a Mailbox to Receive Bounced Emails?

June 13, 2007

HTTP Upload — An Overview

VB.NET HTTP Download with Progress Monitoring and Abort

June 12, 2007

Read Binary File in Ruby

FoxPro Literal String - Embed Quote Character

June 11, 2007

Processing a Large IMAP Mailbox (over 100,000 emails)

Display Web Browser in Visual Basic Program

FTP Proxy using the "USER username@site" Method

Half-Width Katakana now Supported in Receiving iso-2022-jp Email

Authenticode-Signed Assemblies (DLLs) may cause Delays at Application Startup

June 9, 2007

Chilkat Maintains Support for NT4 Compatible ActiveX Components

June 7, 2007

The FTP2.DetermineSettings Method

Issue when an FTP Server is behind a NAT Router

FTP Blockers - TCP/IP Port Filtering and Anti-Virus

Deep Inspection Firewalls and Passive FTP (also known as Stateful Inspection Firewalls)

New Versions Released on 6-June-2007

Tagging an Email?

May 30, 2007

GMail - Behavior Explained

May 25, 2007

Using Chilkat Email (POP3) with Gmail

May 4, 2007

426 Connection closed; transfer aborted.

May 3, 2007

Passing Unicode Strings to Chilkat C++ Methods and Properties

April 22, 2007

x64 Compatible ActiveX Components Released

April 12, 2007

Email not Sent Until Application Closes with Anti-Virus Program Running?

April 9, 2007

IIS / Skype Conflict on Port 80 (Unexpected Error Starting IIS)

Deploying an ActiveX Component or Control with your Application

April 4, 2007

Minimizing SMTP Connections

April 1, 2007

IMAP Exchange Server Login

March 21, 2007

Converting HTML Email Body to Plain Text

March 20, 2007

Chilkat Phone Number Change

March 15, 2007

How to Verify Connectivity with POP3, SMTP, FTP, IMAP, etc.

March 12, 2007

AES Encryption Strength

Installation Requirements for an ActiveX

March 9, 2007

Windows Compressed (Zipped) Folders cannot extract WinZip AES Encrypted Zips

March 7, 2007

The Visual Studio Setup & Deployment Bomb

March 2, 2007

Digitally Signing .NET 1.0/1.1 Assembly DLL causes Hang in Debug Mode

February 28, 2007

0xC0000005: Access Violation. First-Chance Exception

February 21, 2007

VS2005 SP1 — A Disaster

February 14, 2007

Last Platform SDK that will work with VC 6.0

February 12, 2007

This application has failed to start because the application configuration is incorrect.

January 29, 2007

Java AES/ECB/PKCS5Padding to Match Chilkat and NIST Test Vectors

January 24, 2007

x64 Pitfall with Visual Studio 2005

"Chilkat Subscription" is renamed "Chilkat Bundle"

Chilkat DLLs are now Digitally Signed

FTP 521 illegal port command

January 19, 2007

Intellisense in FoxPro with ActiveX Components

January 10, 2007

Creating Chilkat ActiveX Components in Delphi

January 9, 2007

Chilkat FTP2 IdleTimeoutMS bug fixed.

Zip Exe Icons Update

Read/Unread Status of Emails in POP3 Mailbox

January 3, 2007

Certificate Private Key Access from Windows Service or ASP.NET

December 21, 2006

iPowerWeb SMTP Send Mail with POP-before-SMTP Authentication

December 20, 2006

Designing Components for Future Problems

December 19, 2006

AES Encrypt Delphi / Java Interop

December 11, 2006

Sending utf-8 Email in ASP

December 8, 2006

Converting Unicode, utf-8, and more from MS Access, SQL Server, etc. in VB6, ASP, ASP.NET, etc.

IIS SMTP Drop Directory Limitations (Max Size)

How to Resolve an Unresolved External in Visual C++

December 7, 2006

Creating Zip Files on your ASP.NET Server

December 4, 2006

Chilkat Crypt Pitfall

November 28, 2006

How to Manage Digital Certificates for a Computer

November 22, 2006

How to Determine if a Zip is Encrypted or Password-Protected?

November 16, 2006

Chilkat Socket / WinSock / SSL Component

November 15, 2006

How to find a file in a Zip when the filename is known but not the path.

November 14, 2006

IE cannot load utf-8 MHT with utf-8 preamble

"Fool me once…" (Email not Delivered?)

Chilkat support for .NET 3.0

November 6, 2006

Can your .NET email control verify that an email address exists?

November 3, 2006

Classic ASP String Component Freebie

October 31, 2006

ChilkatDotNet.dll is attempting managed execution inside OS Loader lock

Chilkat x64 C++ Libraries

October 30, 2006

Displaying Characters from any Language in ASP

FAQ: Encrypted Email in Outlook, Thunderbird, Outlook Express, etc.

C++ 101: Solving Unresolved Externals in Microsoft Visual C++

October 28, 2006

Encryption Compatibility: Matching Encrypted Output on Different Systems

October 26, 2006

Exchange Server 2007 - MAPI and CDO no longer included.

October 23, 2006

Chilkat Subscription Explained

October 20, 2006

Zip 2.0 Encryption, AES, Blowfish, Twofish, Winzip Compatibility

Encryption Padding

October 16, 2006

Close your Memory Stream before trying to use the data!

October 13, 2006

3rd Party .NET Components in ASP.NET 2.0 Shared Hosting w/Medium Trust

October 12, 2006

ASP.NET 2.0 Trust Levels

September 30, 2006

Chilkat Crypt 4.0.0 Released

September 26, 2006

FTP Data Port Event Callback

September 20, 2006

Question about Free Components

September 18, 2006

Email Journaling

September 14, 2006

Parsing a Delivery Status Notification (DSN) Email

September 7, 2006

C++ Memory Leaks?

August 28, 2006

How to Attach an Email for Forwarding

August 17, 2006

Encryption Component’s Charset Property

August 11, 2006

Chilkat x64 Available for .NET 2.0

August 3, 2006

VB.NET Zip Progress Monitoring Event Callback Examples

August 2, 2006


July 31, 2006

128-Blowfish Encryption Matching Published Test Vectors

July 27, 2006

VB6 Blowfish Encryption to Match Published Test Vectors

Encrypting Strings in VB6

X-Mailer and Message-ID

Saving Sent Email to an XML File

July 19, 2006

Sending HTML Email with Embedded Images to GMail

June 1, 2006

C# FTP Upload/Download with Progress Monitoring

FTP ActiveX Events for Upload

FTP ActiveX VB6 example with progress monitoring events.

FTP Callbacks in C++ for Progress Monitoring

Events, events, events.

May 22, 2006

Send Emails One at a Time, or in a Bundle?

April 30, 2006

Chilkat Unlock Codes

April 12, 2006

FTP File Exists Function?

April 11, 2006

Sending Email without a "From" header field.

April 10, 2006

DSN Notification with Chilkat Mail

April 6, 2006

FTP Proxy with Chilkat FTP2

April 4, 2006

RFC822 Date Strings

March 22, 2006

Windows 2003 Server - Illegal SMTP Relay Server Issue

SMTP Server List

March 21, 2006

GMail POP3 Download Settings

March 16, 2006

Character Encoding Tutorial and Links

VB6 function calls vs. subroutine calls


March 10, 2006

Zip: Inherited Parent Directory Security Settings

March 9, 2006

Display HTML Email in ASP, ASP.NET

February 15, 2006

Chilkat Mail ActiveX Events

FTP2 vs. FTP

February 13, 2006

Adding .MHT files as Email Attachments

February 9, 2006

Relative Paths in Zip Q/A


Certificate Path in Signed Email (or Encrypted Email)

February 3, 2006

Chilkat Releases support for .Z and .gz for .NET, ActiveX, and C++

Chilkat UNIX Compress (.Z) ActiveX Examples (VB6)

Chilkat Gzip ActiveX examples in VB6

Chilkat UNIX Compress (.Z file format) examples

.NET Gzip examples

Gzip (.gz) and Unix compress (.Z) file formats now supported with Chilkat Zip

January 31, 2006

SQL Server SP3 problems

January 30, 2006

Extract text from HTML

January 27, 2006

Receiving Encrypted Email

January 24, 2006

Active vs. Passive FTP Mode

Charset method parameter in FTP Component

January 23, 2006

Copy Certificates from one Certificate Store to another.

December 23, 2005

Mail Bounce Address Question

November 30, 2005

ASP.NET Example to Locate a Digital Certificate w/ Private Key and use it for Signing

ASP.NET Example Code to Import a Certificate with Private Key from a PFX

ASP.NET Sample Listing Certificates available to the ASPNET Process.

Add a Digital Certificate to ASP.NET’s Current User Certificate Store

Using Private Keys from ASP.NET for Signing and Decrypting

November 16, 2005

Saving Email to Database

November 13, 2005

ASP.NET SkipVerification permission

"Keep mail on server" option for Outlook

November 11, 2005

Copying Attachments from one Email Object to Another

Attachments within embedded emails.

November 10, 2005

Creating Nodes with Chilkat XML in C++

November 9, 2005

Using Custom Registry Certificate Store

November 1, 2005

VB6 to Encrypt a Credit Card Number

October 28, 2005

Chilkat XML and the validation question

October 27, 2005

SMTPQ Discussion

Using All-or-None and GetBadEmailAddresses

Create Certificate?

Encryption ActiveX Questions

October 26, 2005

How to Verify that a Sent Email Contains both Plain-Text and HTML Bodies

Handling Invalid Email Addresses when Sending Email

Checking password of Zip file.

Invalid use of New keyword

The call to Server.CreateObject failed while checking permissions. Access is denied to this object.

Subscription Clarification

October 25, 2005

SMTP, firewalls, anti-virus, anti-spyware, etc.

Plain-Text / HTML Alternative Bodies

October 21, 2005

Binary Secret Keys

October 20, 2005

VBScript/ASP example to delete only bounced email

Send Korean Email in C#

C++ Web Crawler using Chilkat Spider C++ Class Library

Chilkat Spider v1.1 Released

Mailbox Listener?

October 19, 2005

Lowercase / Uppercase Conversion in C++

Entity Decoding with Chilkat XML

October 14, 2005

Site FTP Command

Delphi ActiveX Tutorial

VB6 ActiveX Examples

Displaying HTML Email

October 13, 2005

Format of Email Address

October 12, 2005

Detect Bad Email Addresses?

503 Error: authentication not enabled

October 11, 2005

Install phpBB using Chilkat FTP-2

SPA (Secure Password Authentication) for POP3 Now Available

Free supporting class libraries / components

.NET uses True/False, ActiveX uses 1/0

October 10, 2005

Zip ActiveX VB6 Example

October 9, 2005

Mail Component Q/A - Junk Email, Message-ID, Custom Headers

October 7, 2005

Chilkat FTP2 v1.3.0 Released

Delphi and Unicode

VB Strings are Unicode

October 6, 2005

In Visual Basic, Strings are Unicode

Some email clients suck.

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