I am running into a problem while sending out emails from the system and the problem is that the email gets delivered to the spam box in gmail/yahoo/hotmail. I am posting here, after doing my bit o...

I have C# form in the site and want to prevent spam bots from filling it. The trick is, that I want to avoid CAPTHA or any other user input to avoid loosing a single registration. Here are some te...

We have a business web application that periodically sends emails as reminders, links to client data, etc. Our company uses Google Apps for our email provider (with our own domain name), and ...

I am operating a website that can send invitation to other people, I encountered a problem that the emails sent from my website are all classified as spam in the major email sevice providers,...

What are some non-captcha methods for blocking spam on my comments?

I have recently been inspired to write spam filters in JavaScript, Greasemonkey-style, for several websites I use that are prone to spam (especially in comments). When considering my options about ...

this is my first question on StackOverflow, but I think that we'll both come to the happy end. :) The problem is: I've got newsletter script written in PHP and when I send those emails to the vario...

PHP's mail() function sends mail fine, but Swiftmailer's Swift_MailTransport doesn't work! This works: mail('[email protected]', 'test '.date('H:i:s'), ''); But this does not: $transport ...

When sending HTML e-mail, I understand that it's a best practice to send a plain text version as well. But my question is: Must you send a plain text version as well? What are the repercussions? ...

There is a growing trend to use port 587 for all client to MTA communications. It's in a standards track RFC: http://www.ietf.org/rfc/rfc2476.txt My question is "Why?". Why have 2 instances of a S...

Hi we have just noticed a bunch of Nigerian spam accounts in our email system. Now, we do have a reCaptcha in the signup form but apparently they circumvent it, manually or otherwise. It seems like...

Our company does work environment surveys, and these surveys are filled in online. All participants are sent a link to their survey in an email (personal code included). Some of our clients have e...

I'm actually working on a PHP project that will feature a user system (Login,Register,Send lost password to email,..) and I think that this may be very vulnerable to Brute-Force attacks and/or Spam...

I provided some of my programs with a feedback function. Unfortunately I forgot to include some sort of spam-protection - so users could send anything they wanted to my server - where every feedbac...

I have been trying to get PEAR::mail to successfully deliver emails to hotmail users without being flagged as SPAM and ending up in the junk folder, i have no problems with yahoo/gmail only with ho...