How to improve the forms

In one of the earlier tests I concluded that 6 of the 10 test websites do have a contact form. Let's see how good these forms are. I think the following questions are relevant:

1. Is it a secure form;
2. How much information is necessary;
3. What is the response to an error.

Let's see how secure the forms are:

1. helenahoeve.nl Not secure
2. philips.nl Not secure
3. postbus51.nl Secure
4. vrom.nl Not secure, note: vrom.nl redirects the user to the postbus51.nl forms
5. wehkamp.nl Secure
6. wnf.nl Secure

Not bad, 3 out of 6 forms are secure. The ranking is:

1. postbus51.nl, wehkamp.nl, wnf.nl
2. helenahoeve.nl, philips.nl, vrom.nl

Okay, how much information is necessary:

1. helenahoeve.nl 4, fields, 4 of them are required
2. philips.nl 18 fields, 5 of them are required
3. postbus51.nl 11 fields, 8 of them are required
4. vrom.nl 4 fields, 3 of them are required
5. wehkamp.nl 11 logical fields, none of them indicated as required (however 3 fields seems to be required)
6. wnf.nl 16 logical fields, 8 of them are required

Ranking these websites based on the number of fields, give this overview:

So far, so good, what is the response on an error (e.g. e-mail address is a@b,c with a comma instead of a dot).

1. helenahoeve.nl Error message that the e-mail address is not valid. You have to go back to the form to correct it.
2. philips.nl Error message that the e-mail address is not valid. You are able to correct it directly.
3. postbus51.nl Error message that the e-mail address is not valid. You are able to correct it directly.
4. vrom.nl Error message that the e-mail address is not valid at the moment you make the mistake. You are able to correct it directly.
5. wehkamp.nl Error message that the e-mail address is not valid. You are able to correct it directly.
6. wnf.nl Error message that the e-mail address is not valid. You have to click on the OK button before you are able to correct it.

Ranking the forms gives this list:

1. vrom.nl
2. philips.nl, postbus51.nl, wehkamp.nl
3. helenahoeve.nl, wnf.nl

Great, there are a few things I could improve:

1. Make the forms secure;
2. Detect the error as soon as possible;
3. Let the user correct the error directly.