* Are you spamming if you mail to your existing customers?
The better question to ask is, what reason do you have to believe that your existing customers have any reasonable expectation they will receive any email from you as a result of their buying a product or service from you?
Looking at the specific site, the sign up form specifically requires that a customer provide her email address.
The sign up form gives no explaination as to why the site owner requires the customer's email address.
However, the site does have a statement in the How does it work section explaining that 5 days before the posting period expires you will send out a renewal notice.
The only statement the site owner makes about what the site owner will do with the customer's email address is that:
"I
nformation you send to us will never be shared. We respect your privacy."
Based on this, can it be reasonably presumed that a customer will receive marketing email of any kind from the site owner?
I would suggest the short answer is No.
Why? I appreciate many marketers believe that when a customer purchases a product or service from them and provides an email address, this gives the marketer implied consent to send the customer marketing email to that email address.
However, this is "opt-out" marketing.
How come? Because the marketer gives the customer no choice. The site compels the customer to provide her email address during the sale process.
The customer has to opt-out from receiving further marketing email from the site owner.
In short, you don't have "affirmative" or "express" consent to send your customers marketing e-mail. And a thank you email will ultimately wind up with a pitch for customer's to use the site again and so be a commercial email.
What can be done?
* Existing customers
Send an email to existing customers asking permission to send further marketing emails. (Ensure that the process is closed loop opt-in.)
* New customers
Add a pre-ticked check box with a disclosure statement above the click button on the up-load page. In the statement tell customers something like "Yes, I agree to receive the site's e-zine [insert brief promo] along with marketing emails. Please send me an email so that I can confirm my request."
Use a closed loop subscription process to verify the subscription request.
If someone unclicks the 'pre-ticked check box' do not send them a confirmation email.
As an alternative, after the person clicks the "confirm uploads and checkout button" the person is taken to the merchant processor to pay.
When the person completes the payment process, take the customer to another page on your site giving the customer the option of subscribing to your site's e-zine.
Also, create a subscription panel allowing people to subscribe to your site's e-zine on every page.
Use a closed loop subscription process.
* Privacy Policy
Publish a site privacy policy and stick to it.
Finding a service provider.
You can use a server side solution, or a web based solution.
If you don't want to send email from your own server and are looking for a provider that will handle both your transactional emails and your commercial email, including giving you the option of posting collected data, providing you are prepared to only use confirmed (aka double) opt-in through a secure closed loop subscription process, I would suggest
http://www.bighip.com.
(I acknowledge a bias. I use that firm's service for one of my e-zines and am happy with the service.)
Some have suggested AWeber. Good service, but I believe AWeber will require that you use their panel to collect data, which may be a hassle given how your site is set up. However, I am not sure, so you may want to check them
http://glube.aweber.com.
(That is an affiliate link.)
Trusting these comments are of some value.
John