We try very hard not to send out updates and edits to posts that have already been sent!  For most publishers most of the time this works well, because we use the initial publication date to determine when a post is mailed, and that typically doesn't change.

If, however, you manually alter the date of the article in your blogging system, or your blogging system changes the publication date after an edit, there is a very low risk that the article might be re-sent, if the date has changed to a later day (because, by default, FeedBlitz only mails out "today's" posts, and so any changes made will have to make the post look like it's new "today").

One way to check what FeedBlitz sees for dates is to use the diagnostics feature.  Go to www.feedblitz.com/f?lists, invoke your feed's popup menu, and choose the Diagnostics | Diagnostics option.  You will see the dates as FeedBlitz interprets them (currently in US eastern time).  That way you can see whether or not any changes you have made has moved a post into "today" , riskinig it being mailed out.

If you see your changes and want to stop it from going out, you have several options:

• Pause the feed until tomorrow using the Actions... section of the popup menu (don't forget to come back and re-enable it);
• Edit the post and move its date back to yesterday or earlier in your blogging platform (then re-check what the feed says in FeedBlitz);
• Upgrade to Turbo On Demand and take manual control over which articles are sent.  You have 2 weeks to cancel the trial if you later want to get back to normal.