I use this code to collect related emails & send newsletters to my
customers. I don't use it to send Junk mails to others, so I do not know
about the filtering for different mail servers and these kind of usages.
I also use it to extract emails from a complex text file (containing email addresses
and other texts).
Using the code
There are two parts: first gathering and collecting email addresses in database
and the second is sending email.
For extracting emails easily copy the text containing emails & paste in to
the textbox AddBulkEmail.aspx. It will extract and save email addresses to the MailingList.mdb file.
After that, in Default.aspx I send my emails to the addresses.
Before using, set the web.config file. I set 4 variables in web.config:
SMTPServerName is the name of the mail server which you are
SampleEmailAddress is the email address which you send sample
email for testing and checking the content of your email before sending to the
UDLPath is the address of the file which includes the connection
MatchExpression, there is no need to change it, I placed it here
because I thought may be some times I want to change the filtering for
extracting emails; and easily I change the web.config file.
In the main.udl file set your physical path for MailingList.mdb.
(The name of application which I tested in my local machine is
http://localhost/emailer, so you may need to create it in your IIS)
Points of Interest
I think it needs an automated un-subscriber at the end of every mail which I
send to unsubscribe users from my mailing list. I also do not know
is any problem in sending email to unknown people!