<img height="1" width="1" style="display:none" src="https://www.facebook.com/tr?id=1822615684631785&amp;ev=PageView&amp;noscript=1"/>

What the “An Error occurred, but the error response could not be deserialized” error means

If you’ve sent a Gmail mail merge campaign with GMass and were notified that this error was generated while sending to your email addresses:

An Error occurred, but the error response could not be deserialized

you might be perplexed, since the error doesn’t provide any actionable information. This is an error that is generated by the Gmail API when GMass connects to your Gmail account to send your mail merge campaign. While there’s not much information available from Gmail as to the cause of this error, we’ve found that the usual cause is the user of large attachments or inline images.

Gmail states that emails can be up to 25MB in size, and GMass places a further size limit of 12MB per individual email message, but still, Gmail may generate this error even if you are under both of these limits. The solution is to simply reduce the size of your email, either by shrinking your inline images, host your images and refer to them relatively in your HTML code, or by reducing the size of or eliminating attachments.

This Stack Overflow article corroborates our theory about this error.

Email marketing, cold email, and mail merge inside Gmail


Send incredible emails & automations and avoid the spam folder — all in one powerful but easy-to-learn tool


TRY GMASS FOR FREE

Download Chrome extension - 30 second install!
No credit card required
Love what you're reading? Get the latest email strategy and tips & stay in touch.
   


1 Comment

Leave a Reply

Your email address will not be published. Required fields are marked *

Transform your Gmail account into an email marketing powerhouse

GMass is easy to learn and easy to use — but brings unbelievable email power into Gmail

Try GMass for free Then check out the quickstart guide to send your first mail merge email in minutes!

GMass

Share This