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GMass Terms of Use and Anti-Spam Policy

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 GMass, Inc. (“GMass” “we” and “us”). If you have any questions, comments, or concerns regarding these terms or the Services, please contact us at support@gmass.zendesk.com.

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.

Anti-Spam Policy

You may not use GMass to send spam. Spam, by definition, is unsolicited email sent in bulk. There are several lines of defense in place in order to protect GMass from spammers. First, GMass personnel monitor outbound email flow 24 hours a day. Campaigns matching obvious spam and scam heuristics are terminated along with their associated accounts. Secondly, if you’re sending natively through Gmail, Google’s algorithms will likely catch you and terminate or suspect your Gmail or G Suite account. Thirdly, if you’re sending via a third party SMTP service like SendGrid, each service provider has their own mechanisms of watching for spam and terminating spammers.

GMass button versus Send button

GMass and its parent company, GMass, 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, GMass, 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, GMass, 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 http://www.gmass.co/blog. You may contact our support team by sending an email to support@gmass.zendesk.com. 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.

Tracking Domains

In order to use the GMass-provided tracking domain for paying users, ec2-52-26-194-35.us-west-2.compute.amazonaws.com, you must not send unsolicited email.

Confidentiality and Feedback

You acknowledge that, in the course of your relationship with GMass, Inc. and in using the Services, you may obtain information relating to the Services and/or GMass (“Proprietary Information”). Such Proprietary Information shall belong solely to GMass 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 GMass 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 GMass 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. GMass 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 support@gmass.zendesk.com.

Warranty Disclaimer

Neither GMass 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 GMass (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 GMass’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 GMass 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 GMass 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 GMass agree that these Terms are the complete and exclusive statement of the mutual understanding between you and GMass, 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 GMass, and you do not have any authority of any kind to bind GMass in any respect whatsoever. You and GMass agree there are no third party beneficiaries intended under these Terms.

    1. Hi Richard,

      Please contact our support team through http://gmass.co/g/support with details on any issue your encountering.

    1. Hi Joanne,

      You can find your subscription type by opening a new compose and clicking on the GMass Settings button (the little triangle beside the GMass button). In the popup, you’ll see your subscription plan type in the bottom right hand corner.

      Unfortunately, we can’t directly transfer subscriptions from a CC to Paypal, Please contact our support team at https://www.gmass.co/blog/how-to-get-support-from-the-gmass-team/ so we can assist you directly.

  1. my name is adam I recently received a charge on my debit card that I don’t know

    please call me asap 631-730-3802

    1. Hi Adam,

      Please contact our support team at https://www.gmass.co/blog/how-to-get-support-from-the-gmass-team/ so that we may address this issue directly.

  2. This would be great, if I could actually get on the sight and merge my email accounts. And If it was free.
    I have several accounts that I have to get to in a hurry, but I cant remember account names and passwords. Is there any way to retrieve them with my profile information? Even the phone number has been changed on several of them. Can you help me? M Elena

  3. my account that signed gmass has been blocked i would like to transfer the remaining days to another account

  4. It’s ok for me. I propose to consider PAYONEER as one of the payment methods for paying for using Gmass.


  5. How can I distinguish “Dear Mr …” or “Dear Mrs …” from my google contacts?
    I only see your example with “Dear John”, using the first name, where gender doesn’t matter. :/

    1. Hi Stefan,

      You’ll need to use a Google Sheet with a column for the title for your recipients. For example: if you have a column with the header TITLE where it includes the title for each of your recipients, then you can use {TITLE} {FIRSTNAME} as the personalization. Using just your Gmail contacts limits you to using only 3 categories for your mail merge: First Name, Last Name and Email.

    1. Hi Ken,

      On your end, you can click the spam icon to report it as spam to your email server. This will also prevent any future emails received from that email address from reaching your mailbox (future emails will be sent to your spam folder instead). On our end, we will send a warning to the sender if they are using GMass based on your report and instruct them to provide an option to their intended recipients to opt-out of future mailing.

    1. Hi Donna,

      We have a 15% discount applied to subscriptions on a .edu or .org email accounts for non-profits and educational institutions which is automatically applied at checkout.

  6. ¿Cuantos correos se pueden enviar diariamente en los distintos niveles?

    ¿es posible probar 2 – 3 meses y cancelar en caso de así decidirlo? ¿que tipo de penalización se aplica en estos casos?

    Se ve interesante su propuesta, gracias

    1. Hi Jesus,

      The sending limit is something that is enforced by Gmail, not by GMass. According to Google, regular G Suite accounts are limited to 2,000. But other factors like the age of the account, content of the Campaign, or reputation of the domain can affect your sending limit.

      There’s some more information about these limits here:
      https://www.gmass.co/blog/how-many-emails-can-you-really-send-with-gmass-and-gmail/ ( https://www.gmass.co/blog/how-many-emails-can-you-really-send-with-gmass-and-gmail/ )  

      You can configure your account with an external SMTP server if you’d like to send unlimited emails without Gmail-imposed sending limits. See: https://www.gmass.co/blog/unlimited-mail-merge-sending-gmail/ ( https://www.gmass.co/blog/unlimited-mail-merge-sending-gmail/ )  

      Regarding your inquiry, yes, since GMass is a monthly subscription, you can go month-to-month and cancel anytime without penalty.

  7. Hi,

    We’re a non-profit organization. We’ve try to pay via paypal but the 15% discount isn’t applied. What can we do to pay with paypal but having the 15% discount??


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