Users who send bulk mail may receive an automated response from Google after running a Mail Merge campaign. G Merge Plus uses Google MailApp.sendEmail method to send out your emails. As in the above screenshot, the error may include a reference to: https://support.google.com/mail/answer/69585. This proves all the more confusing as the link redirects to a Gmail Support page that doesn't offer much explanation.
Reading through online fora regarding the "69585 bounce" issue, it appears to boil down to filtering out suspicious emails. Emails are subject to security checks by Google's mailing system. Google engineers have been hard at work in proactively screening for emails that may be malicious in nature, spammy, or conduits for phishing scams. Once an email sets off these triggers, Google would stop such email from its track and the sender would end up with the above message.
Here are some pointers to consider and recommended solutions:
- Gmail and by extension, G Merge Plus, is not intended for bulk/mass mail campaigns. Sending out a significant number of similar mails can be easily tagged as suspicious behavior. G Merge Plus was designed to create personalized documents that can be sent out as PDF via the Mail Merge function. It also helps to spread your Mail Merge campaigns across several days or accounts.
- Check your emails (both body and signature) for spammy contents. Although unintentional, your email may include phrases which were historically used by known spammers. As a general rule, avoid the following:
- lots of exclamation marks
- "Must read"
- attention getting
- large and/or gaudy colored text
- text the same color as the background
- tiny text
- (almost) zero height images
- links hidden under text
- images or links with a different URL
- Recipients can easily mark your email as "Not Safe" or spam to avoid seeing your messages. In this regard, include clear instructions for recipients to mark your emails as Safe to avoid being blacklisted and end up with bounced messages.
- Google's algorithms can be quite strict for new accounts. In fact, account tenure is a factor for email sending limits. Generally, G Suite accounts with at least 6 bill cycles with Google are considered tenured and can enjoy sending up to 1,500 daily emails.