Is it okay to use forms in emails? It’s not the best idea. But what do you say when your client asks you to put one in an email? You can either tell them “no” for reasons which may not make sense to them, or you can back up your defiance with some hard evidence.
The short of it is that email clients consider email forms to be a security risk. While some email clients simply warn you of potential danger, others outright disable the forms. So if your client wants to send out a form, they should know that most of their recipients will never be able to use it. And for those who can, they’ll think twice about submitting data when they see a warning from their email client.
Common email clients share a propensity to distrust forms in email messages. But they differed greatly in how they handled the intruding forms.
Thunderbird recognizes that the form may be malicious but doesn’t strip its functionality. Instead, it warns you of potential danger:
Outlook.com shows the form. However, the form functions in an odd way; and certainly not correctly. If the form is submitted by keying the “return” key, the page is refreshed but no data is sent and the process is not completed. If the form is submitted by clicking the submit button, nothing happens. Outlook 2007 also exhibits some unique behavior in that it custom renders the form. Inputs are replaced with brackets and the submit button is replaced with the button’s value enveloped in brackets. So it’s a plain-text version of what the form would look like, even though the HTML is being displayed.
|Email Client||Form is displayed||Form is functional|
|Yahoo! Mail Classic||Yes||No|
|Penelope (Eudora 8)||Yes||Yes|
|Windows Live Mail||Yes||Yes|
|Lotus Notes 8||Yes||Yes|
Given the sporadic support for forms in emails, we recommend linking to a form on a website rather than embedding it in the email. This is the safest, most reliable solution to pairing an email message with a form. More people will see it and be able to use it, and as a result participation will increase.
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