Here in the unsubscribes and bounces archives you'll find the blog posts we've written about the unsubscribe process and bounce handling.
You may also be interested in our pages on GMass's unsubscribe management and bounce management features — see how GMass takes the burden off your hands and makes sure you only send to working email addresses belonging to people who want your emails.

May 22, 2018
How to unsubscribe a domain
You can now unsubscribe an entire domain from your Gmail mail merge campaigns sent with GMass. Unsubscribing a domain is …
Continue Reading
November 23, 2017
Gmail’s 69585 bounces and what they mean
A Gmail 69585 bounce is a type of block indicating that Google preemptively filtered your email before it ever reached the recipient's server.
Continue Reading
May 3, 2017
Advanced Bounce Handling
You now have more control over your account’s bounce list and how bounces are handled for your account. GMass’s reply …
Continue Reading
September 9, 2016
New Gmail Mail Merge Feature: Manually Import or Remove Unsubscribe Addresses
If you’ve been using GMass for your mail merge campaigns in Gmail, you can now easily add email addresses to …
Continue Reading
July 14, 2016
Yahoo bouncing emails sent by select GMass users
Several users have reported that in the last few days, sending to yahoo.com email addresses, and email addresses hosted by …
Continue Reading
June 13, 2016
Did your Google account get suspended or did Gmail bounce your emails?
With a recent increase in GMass’s popularity has come an increased number of reports of Google accounts getting suspended after …
Continue Reading
May 14, 2016
How to handle this strange Gmail bounce: “read error: generic::failed_precondition”
Several users have recently reported seeing bounce backs from Gmail that look like this: Delivery to the following recipient failed …
Continue Reading
April 20, 2016
New Feature: Globally Shared Unsubscribes and Bounces for Multi-User Google Workspace Organizations
Today we launched a new feature that allows Google Workspace (formerly called G Suite and Google Apps) users of a …
Continue Reading
January 2, 2016
A hack to pull your bounces from your Gmail account
GMass offers a hack that will allow you to skip sending emails to reoccurring bounced addresses. Click here to start optimizing your email delivery today!
Continue Reading
October 6, 2015
Add an Unsubscribe Link
You now have the option to insert an Unsubscribe link into your email marketing campaigns with GMass. Adding an unsubscribe …
Continue Reading