How to change or update the credit card for your GMass subscription

If you’ve previously subscribed to a paid GMass plan, at some point you may need to change or update the credit card associated with your account. This is how you do it.

1. Compose a new email in Gmail and set the To field to

2. Type anything you wish for the Subject and Message.

3. Click the main GMass button. Do not click the Gmail Send button.

4. You’ll then get a link at the top of your screen to change your credit card. Click that link. You’ll be taken to a web page with a button to enter your new credit card.

  1. You have stated that my email address cannot be found but I am still being charged. I have attempted to cancel my subscription several times. Please contact me asap.

  2. according to your server I am currently a paid member of gmass however I am still unable to send mass emails to any more then 50 recipients, the main purpose of having gmass to begin with.

  3. I have been charged twice now without authorization and despite my multiple attempts to reach you and cancel. Please advise ASAP.

    1. Hi Brittanae,

      When you subscribed to GMass, you subscribed to a recurring monthly subscription. We’ve responded to your email on the process for canceling your subscription and requesting for a refund. Again they can be found here:

      To cancel your GMass subscription, please see
      You may issue yourself a refund, please see ( )

  4. Hi,

    I was charged last month for two GMass subscriptions that I thought I cancelled last month. For the three emails that I have used GMass on, I tried to cancel again, just in case it didn’t work last month. However, I received the message “Your GMass request failed. Error details: This account is a free account, so there is no subscription to cancel.”

    I’m not sure for which emails I am being charged! Can you please help out? Thanks!

  5. I tried to unsubscribe several times during the last 8 months. My account is continuously charged. I’m afraid that I have to look for a good lawyer, if my polite and impolite requests to unsubscribe fail. If you need the dates of my letters I sent, I can specify them.

    1. Please contact our support team through We have not received any requests for assistance in canceling your subscription to GMass.

      Also note that cancellations are self-service, to cancel your GMass subscription, please see It’s basically a 3 step process: open a new compose, add to the TO field, and finally, click on the GMass button.

  6. Hi. Can you please confirm my paid subscription. I paid yesterday for a one year Gsuite and have not received confirmation. thank you

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