Many users are concerned about the privacy of their email marketing lists and whether GMass stores their email addresses and the contents of email messages, and whether any of this data is shared with third parties. The information below is meant to address these concerns.

Overview of how GMass works

GMass works by transferring data to and from your Gmail account. Most of this data transfer occurs via numeric identifiers specific to Gmail and the Gmail API. In some cases, email addresses are transferred from the GMass server back to the Gmail interface, but in a secure manner over SSL. Gmail does not allow a third party integration like GMass to connect to account data without the use of SSL.

How are your email lists used?

In order to track opens, clicks, and provide unsubscribe functionality via the GMass unsubscribe link, our database does store the email addresses to which you are sending email. This data is stored in a database, secured by two layers of firewalls, and is never shared with any third parties. GMass is similar in this regard to well-known email marketing systems like MailChimp, where storage of email addresses is required to provide standard email marketing features.

Does GMass store the content of your email message?

No. Unlike a traditional email marketing service like MailChimp, the GMass database does not store the contents of your email marketing campaigns, except for the From Address used for each campaign.

We store the From Address because in Gmail, multiple From Addresses can be authorized for use in a single Gmail account, and by storing the From Address, we are better able to support users by being able to look up their GMass account when they tell us they sent a campaign “from” a certain address.

We do not store the content (Subject / Message) of email campaigns, but the content does pass through our server ephemerally. This is required in order to add the mechanisms to an email message that allows GMass to track opens and clicks on individual email messages. This process happens in microseconds and the content of an email message does not live on our server beyond that.

Does GMass share any of your email list information with third parties?

No. GMass is a tech product built by developers who are email marketing enthusiasts. The company behind GMass, Wordzen, Inc., is a software company in the business of creating Gmail plugins and not in the business of selling or renting data.

Effective date: September  1, 2015

Please note that your use of and access to our services (defined below) are subject to the following terms; if you do not agree to all of the following, you may not use or access the services in any manner.

These Terms of Use (the “Terms”) are a binding contract between you and Wordzen, Inc. (“Wordzen” “we” and “us”). If you have any questions, comments, or concerns regarding these terms or the Services, please contact us at

You must agree to and accept all of the Terms, or you don’t have the right to use the Services. Your using the Services in any way means that you agree to all of these Terms, and these Terms will remain in effect while you use the Services. These Terms include the provisions in this document, as well as those in the Privacy Policy.

Will these Terms ever change?

We are constantly improving our Services, so these Terms may need to change along with the Services. We reserve the right to change the Terms at any time, but if we do, we will bring it to your attention by placing a notice on the GMass website, and/or by sending you an email, and/or by some other means.

If you don’t agree with the new Terms, you are free to reject them; unfortunately, that means you will no longer be able to use the Services. If you use the Services in any way after a change to the Terms is effective, that means you agree to all of the changes.

General Philosophy

We strive to make GMass as easy-to-use as possible and as ethical a business operation as possible. The terms will ensure a good experience for you, our user, and us, the creators of GMass. You must agree to these terms before using GMass.

GMass button versus Send button

GMass and its parent company, Wordzen, Inc. cannot be held responsible if you accidentally click the Gmail Send button instead of the GMass button. Clicking the Gmail Send button while working on an email campaign may send an email, exposing your email list to everyone in the To field. GMass and its parent company, Wordzen, Inc. also cannot be held responsible if you have other Chrome extensions installed that interfere with the function of the GMass buttons. For example, if you have a Chrome extension installed that overrides the GMass code and actually triggers the Gmail Send button click when the GMass button is clicked, we cannot be held responsible.

Sending Limits

The GMass software will attempt to send your email campaign to your email recipients, but we cannot guarantee that your emails will be delivered. Because we rely on Google’s infrastructure from sending, you agree that we cannot be held responsible if your particular Gmail or G Suite account has reached its capacity, as determined by Google. We publish guidelines, based on Google’s guidelines, of an account’s maximum sending capacity, but they are just guidelines, and not hard rules.

Gmail and  G Suite account suspensions or closures

GMass and its parent company, Wordzen, Inc., cannot be held responsible if Google suspends or terminates your Google or Gmail account because of GMass use. Ultimately, you are responsible for the email activity inside your Gmail account. You understand and agree that GMass is designed to automate the sending of mass emails through your Google account, and it is your responsibility to adhere to Google’s own terms and conditions. GMass has no ability to reinstate a Google account should Google decide to suspend or terminate it.


You understand that if you subscribe to a paid GMass account using a credit card or PayPal account, you will be charged a monthly or annual fee, based on the plan you choose, until you cancel your subscription. This does not apply to Bitcoin-based subscriptions.

Canceling a subscription

You understand and agree that in order to cancel a paid GMass subscription, you must follow the instructions outlined here. The following are not acceptable methods of canceling a paid GMass subscription:

1. Emailing a GMass staff member requesting cancellation
2. Emailing the support address requesting cancellation
3. Tweeting to a GMass staff member requesting cancellation
Your subscription will not be cancelled until these instructions are followed: X


Sometimes, a subscribed user will choose to issue a chargeback via their credit card company in order to effect a cancellation. As a small business, we are sensitive to chargebacks and the costs we incur because of them, and as a result, we take the following action when a chargeback is issued against our merchant account:

1. We investigate the incident to determine if we are at fault.
2. If we find that we are not at fault, we submit evidence to the credit card company to defend our charges.
3. We automatically cancel the subscription associated with the chargeback.
4. We institute either a lifetime ban on that particular Google account, or a reinstatement fee on the account should the account decide to re-subscribe to GMass in the future.


GMass is a low-cost email service with limited support staff. Most answers to support questions can be found by searching our blog, located at You may contact our support team by sending an email to Here are some guidelines for getting support. Note that we do NOT answer all support requests. Emailing GMass staff directly may result in your request being ignored or delayed.

Confidentiality and Feedback

You acknowledge that, in the course of your relationship with Wordzen and in using the Services, you may obtain information relating to the Services and/or Wordzen (“Proprietary Information”). Such Proprietary Information shall belong solely to Wordzen and includes, but is not limited to, the features and mode of operation of the Services, trade secrets, know-how, inventions (whether or not patentable), techniques, processes, programs, ideas, algorithms, schematics, testing procedures, software design and architecture, computer code, internal documentation, design and function specifications, product requirements, problem reports, analysis and performance information, benchmarks, software documents, and other technical, business, product, marketing and financial information, plans and data. In regard to this Proprietary Information:

(a) You shall not use (except as expressly authorized by this Agreement) or disclose Proprietary Information without the prior written consent of Wordzen unless such Proprietary Information becomes generally publicly available without your breach of this Agreement.

(b) You agree to take reasonable measures to maintain the Proprietary Information and Services in confidence.

You may, at your discretion, provide feedback to Wordzen with respect to your testing of the Services (“Feedback”). Feedback may include, without limitation, errors or difficulties discovered in the Services and the characteristic conditions and symptoms of the errors and difficulties. Wordzen shall own all right, title, and interest in the Feedback and you shall and hereby do make all assignments necessary to accomplish the same.

What about my privacy?

GMass takes the privacy of its users very seriously. For the current GMass Privacy Policy, please click here.

The Children’s Online Privacy Protection Act (“COPPA”) requires that online service providers obtain parental consent before they knowingly collect personally identifiable information online from children who are under 13. We do not knowingly collect or solicit personally identifiable information from children under 13; if you are a child under 13, please do not attempt to register for the Services or send any personal information about yourself to us. If we learn we have collected personal information from a child under 13, we will delete that information as quickly as possible. If you believe that a child under 13 may have provided us personal information, please contact us at

Warranty Disclaimer

Neither Wordzen nor its licensors or suppliers makes any representations or warranties concerning any content contained in or accessed through the Services, and we will not be responsible or liable for the accuracy, copyright compliance, legality, or decency of material contained in or accessed through the Services. We (and our licensors and suppliers) make no representations or warranties regarding suggestions or recommendations of services or products offered or purchased through the Services. THE SERVICES AND CONTENT ARE PROVIDED BY WORDZEN (AND ITS LICENSORS AND SUPPLIERS) ON AN “AS-IS” BASIS, WITHOUT WARRANTIES OR ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING, WITHOUT LIMITATION, IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, NON-INFRINGEMENT, OR THAT USE OF THE SERVICES WILL BE UNINTERRUPTED OR ERROR-FREE. SOME STATES DO NOT ALLOW LIMITATIONS ON HOW LONG AN IMPLIED WARRANTY LASTS, SO THE ABOVE LIMITATIONS MAY NOT APPLY TO YOU.

Limitation of Liability



You may not assign, delegate or transfer these Terms or your rights or obligations hereunder, or your Services account, in any way (by operation of law or otherwise) without Wordzen’s prior written consent. We may transfer, assign, or delegate these Terms and our rights and obligations without consent.

Choice of Law; Arbitration

These Terms are governed by and will be construed under the laws of the State of Illinois, without regard to the conflicts of laws provisions thereof. Any dispute arising from or relating to the subject matter of these Terms, that is not solved via the dispute mechanisms above, shall be finally settled in Chicago, Illinois, in English, in accordance with the Streamlined Arbitration Rules and Procedures of Judicial Arbitration and Mediation Services, Inc. (“JAMS”) then in effect, by one commercial arbitrator with substantial experience in resolving intellectual property and commercial contract disputes, who shall be selected from the appropriate list of JAMS arbitrators in accordance with such Rules. Judgment upon the award rendered by such arbitrator may be entered in any court of competent jurisdiction. Notwithstanding the foregoing obligation to arbitrate disputes, each party shall have the right to pursue injunctive or other equitable relief at any time, from any court of competent jurisdiction. For all purposes of this Agreement, the parties consent to exclusive jurisdiction and venue in the state or federal courts located in Chicago, Illinois. Any arbitration under these Terms will take place on an individual basis: class arbitrations and class actions are not permitted. YOU UNDERSTAND AND AGREE THAT BY ENTERING INTO THESE TERMS, YOU AND WORDZEN ARE EACH WAIVING THE RIGHT TO TRIAL BY JURY OR TO PARTICIPATE IN A CLASS ACTION.


You will be responsible for paying, withholding, filing, and reporting all taxes, duties, and other governmental assessments associated with your activity in connection with the Services, provided that Wordzen may, in its sole discretion, do any of the foregoing on your behalf or for itself as it sees fit. The failure of either you or us to exercise, in any way, any right herein shall not be deemed a waiver of any further rights hereunder. If any provision of these Terms is found to be unenforceable or invalid, that provision will be limited or eliminated, to the minimum extent necessary, so that these Terms shall otherwise remain in full force and effect and enforceable. You and Wordzen agree that these Terms are the complete and exclusive statement of the mutual understanding between you and Wordzen, and that it supersedes and cancels all previous written and oral agreements, communications and other understandings relating to the subject matter of these Terms. You hereby acknowledge and agree that you are not an employee, agent, partner, or joint venture of Wordzen, and you do not have any authority of any kind to bind Wordzen in any respect whatsoever. You and Wordzen agree there are no third party beneficiaries intended under these Terms.

Over the last month, a small number of users have reported garbled characters appearing in their Gmail mail merge campaigns with GMass. In most cases they reported characters like “” appearing randomly throughout the text of the email that is sent after clicking the GMass button. The issue tended to surface in emails containing non-English characters.

[Example of an email with garbled characters]

I’ve been wanting to get to the bottom of the issue for a while, but I couldn’t because I couldn’t actually reproduce the issue myself…until tonight.

Earlier today, I conducted a screen share session with a user that had experienced the bug and she was able to walk me through the steps to reproduce the bug. After capturing some data, and spending all evening investigating, I finally figured out the cause and solved the problem.

The problem only surfaced if the To field of a Gmail Draft contained an email address that contained a foreign character. The mere presence of a foreign character in a single email address would cause all individual emails sent to all recipients of the campaign to receive a message with garbled characters. Even if a test message was sent to just one test address containing non-foreign characters using the “Send Test Email” feature, that test would also contain garbled characters, because the To field contained an address with foreign characters when the “Send Test Email” button was clicked.

[Example of an email with an address in the To field containing an illegal foreign character]

For the technical types, the issue was related to the way Gmail encodes email messages in certain situations. While the standard encoding for both the HTML and Plain Text MIME parts of a Gmail Draft are encoded as quoted-printable, if an email address in the To field contains a foreign character, then the encoding of both MIME parts becomes “8bit” instead of “quoted-printable”.

[The encoding changes to 8bit, and previously Chinese characters would be garbled]

[Now Chinese characters are handled properly in the 8bit format]

This single anomaly threw off the GMass code that disassembles a message to add open and click tracking and then reassembles it for sending. The reassemby wasn’t able to output all characters in the necessary “8bit” encoding format. 

The fix was to modify how the final message is outputted so that “8bit” encoding is handled properly. This required writing to a memory stream instead of a string. I’m happy to share more details with any interested parties — just get in touch.

You might say that Rich Levy lives by the axiom, “out with the old and in with the new.” A self-professed “functioning entrepreneur with a manageable start-up problem,” Levy has created several successful enterprises ranging from a sausage store to his latest venture, an ingenious digital liaison between restaurants and gastronomes in Chicago:

Levy uses email marketing to light the fire and entice restaurant owners and managers to join his fellowship of foodies. He has tried all major platforms for email marketing and has seen the usual open and click rates of less than ten percent.

A few months ago he started using GMass, a new extension for the Chrome browser that transforms anyone with a Gmail account into an email marketing mastermind.

“I am routinely getting over 60 percent open and 50 percent click rates, then I set the appointments and close deals,” Richard said recently. “It’s very seamless to set up campaigns, launch them, and then track the results,” he added.

Levy believes the extraordinary results he gets using GMass are due to several factors. “I write short, personal notes to people with a one or two-word subject line. GMass personalizes each one and the recipient sees that it’s coming from me at my personal account,” Levy explained. “It’s not spam, it’s a real letter with a meaningful message from me to my customer or prospect.”

GMass is the brainchild of another Chicago entrepreneur, Ajay Goel, who also has a track record of creating successful companies. GMass’s features include tracking, personalization, mail-merge, and scheduling.

A visit to will prompt a visitor to “Add GMass to Chrome” and the prompts take you through installation, setup, and operation.

We’ve just deployed a minor enhancement that lets you easily see the status of an in-progress mail merge campaign. For example, if you’ve scheduled an email campaign to 10,000 people, and GMass has spread the campaign’s sending out over 5 days, and after day 1, you want to check its status, you can now do that just by opening up the campaign from the GMass Scheduled label.

If a campaign has partially sent, you’ll get a yellow status bar after opening the campaign, letting you know how many emails have been sent and when it’s next scheduled to send.

In the example below, the campaign I sent to my Wordzen users is part of a multi-day send, and the first day’s batch have been sent. I simply had to open up the email from my Drafts folder or from the GMass Scheduled label to access this information.

As with all GMass updates, just reload Gmail in Chrome to get the latest version of GMass.