Anyone who’s had an e-mail account for any length of time likely faces ever-increasing inbox volumes.

And trying to keep those groaning inboxes in check can be a never-ending task.  Now a recent report gives us clues as to what e-mails are being purged most frequently by recipients.

It’s been released by Unroll.Me, a service that scans users’ e-mail accounts for all of the lists to which they are subscribed — knowingly or not.  It then gives people the opportunity to unsubscribe, or to consolidate groups of e-mails into a single regular update.

It turns out, many people are unwittingly “subscribed” to receive e-mails from vendors based on something as benign as making a single online purchase.  So Unroll.Me finds a substantial incidence of people taking unsubscribe actions when given the chance.

Unroll.Me’s report claims that it prevented more than 1 billion e-mails, offers and updates from reaching inboxes last year via its service.

Of particular interest than the overall volume is the list of e-marketers that have been dissed the most by customers.

Leading the list is 1-800-Flowers.  A whopping ~53% of Unroll.Me users had those e-mails stopped during 2013.

[A personal note about 1-800-Flowers:  Over the past five years, our family has used this service to order flowers twice a year (Christmas and birthday) to exactly one person.  For those twice-a-year transactions, I estimate conservatively that we receive more than 200 e-mail solicitations each year — most with breathless offers promising deep discounts on orders.  Do those offers make us more inclined to purchase from them?  Hardly.]

According ton Unroll.Me, other e-marketers that experienced high unsubscribe rates in 2013 include:

• Ticketweb:  ~48% unsubscribe rate
• ProFlowers:  ~45%
• Expedia:  ~45%
• Active.com:  ~45%
• Oriental Trading: ~44%

At the other end of the scale are companies and services that remain subscribed to by two-thirds or more of those who received their e-mails.

This “Star Gallery” is made up of Facebook, Google+, Twitter and LinkedIn.  What these e-mailers share in common is that they are social platforms, with engagement and interest levels higher because of the topics involved (friends, acquaintances, contacts and shared interests).

In other words, it’s the people they know, not the things companies want to sell them.

Now, back to the purging …