I'm trying to find an online service that can print and mail semi-customized postcards as part of a direct-mail marketing campaign.<p>This is all within the United States.<p>I have a database of several thousand recipients. I also have a program to automatically generate globally unique coupon codes.<p>Can anyone recommend a webservice, preferably with an API, that I could use to automate the printing and mailing of these postcards?<p>Thank you!
Postful is one I've used in the past. Does have API:<p><a href="http://www.postful.com/help/integration" rel="nofollow">http://www.postful.com/help/integration</a><p>And, PostalMethods is one I've been meaning to try -- again with API:<p><a href="http://www.postalmethods.com/" rel="nofollow">http://www.postalmethods.com/</a>