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email deliverability

A collection of our articles on email deliverability. We also have several tools to help you test your deliverability like our Inbox, Spam, or Promotions tool.

July 9, 2017

How we analyze spam and email deliverability issues

We analyze spam and email deliverability issues by sending your campaign to a seed list of ten different secret email addresses we maintain.

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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 …

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March 12, 2017

Look at all the big brand emails in my Gmail Promotions folder

With GMass you can trust your emails to end up in the Primary Inbox and not in the Spam, Social Media, or Promotions folder. Try our email extension today!

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January 12, 2017

Look where the MailChimp Annual Report landed

Every year I look forward to receiving MailChimp’s Annual Report. It’s funny, pretty, and full of interesting statistics. It also …

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December 15, 2016

How do Spam Filters Work?

Understanding how spam filters work can help you avoid having your email messages blocked. Following the rules will help you run successful campaigns.

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November 22, 2016

How to resend your Gmail mail merge campaign to blocked email addresses

If you sent a mail merge campaign with GMass and found that you experienced some blocking, you may want to …

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August 19, 2016

What is a tracking domain and how does it improve email deliverability?

Setting a custom tracking domain on your outreach emails: improves the branding of your links increases your click-through rate, and …

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August 12, 2016

Spammers, GMass, and why your legitimate emails are ending up in Spam or being flagged as scam

We’ve had several users in the last few days report that emails they are sending with GMass to their own …

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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 …

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June 2, 2016

Emails getting blocked? Take this one step to eliminate delivery issues.

Overview GMass is a unique service in the email marketing space because it’s built on top of Gmail. That means, …

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May 31, 2016

The default tracking domain for Google Apps users was listed as “deceptive” by Google over the weekend

The default tracking domain that GMass uses for open-tracking, click-tracking, and the unsubscribe link for Google Apps users, gm.ag, was …

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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 …

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