web
You’re offline. This is a read only version of the page.
close
Skip to main content

Announcements

Welcome to the Power Platform Communities
News and Announcements icon
Community site session details

Community site session details

Session Id :
Power Platform Community / Forums / Power Automate / Invalid Bcc header - S...
Power Automate
Answered

Invalid Bcc header - Send email (V2) Gmail

(0) ShareShare
ReportReport
Posted on by lethhanh 8

Hello,

 

In my flow, I need to send an email using Gmail connector and the Bcc list is a string separated by ';'.

Yet the response I kept getting is:

"Invalid Bcc header
clientRequestId: d3133524-f43a-4d69-8945-b5a5a802c8d8"

 

lethhanh_0-1702266140494.png

Is there a limitation in the Bcc field that I miss?

Categories:
Using flows
  • Verified answer
    annajhaveri Profile Picture
    annajhaveri 8,531 Most Valuable Professional on at

    @lethhanh  can you store the bcc values in variable or compose action first and then use variable or output of that compose action in the gmail connector, just to check if the emails are valid email addresses?

  • lethhanh Profile Picture
    lethhanh 8 on at

    Thank you @annajhaveri !

     

    There is one email which ends with a period ("@gmail.com."), and that's why the flow failed.

    And also the gmail connector will not work if the email addresses exceed 100 emails.

     

    Thanks a lot!

Under review

Thank you for your reply! To ensure a great experience for everyone, your content is awaiting approval by our Community Managers. Please check back later.

Helpful resources

News and Announcements

Welcome to the Power Platform Communities

Quick Links

Season of Sharing Community Challenge Winners!

Congratulations to our community stars!

Kudos to our 2025 Community Spotlight Honorees

Expanding mentorship, skilling, and AI innovation

Congratulations to the July Top 10 Community Leaders!

These are the community rock stars!

Leaderboard > Power Automate

#1
David_MA Profile Picture

David_MA 245 Super User 2026 Season 2

#2
11manish Profile Picture

11manish 233 Super User 2026 Season 2

#3
Valantis Profile Picture

Valantis 136 Super User 2026 Season 2

Last 30 days Overall leaderboard

Featured topics

Known issue with browser automation in Power Automate for Desktop on Google Chrome 146 and 147
Share your ideas and struggles with building Power Automate flows!
Survey: Power Automate mobile app
How to Ask for Help with Your Power Automate Workflow
Start and wait for an approval action
Restore a deleted flow
List of actions cheat sheet for Power Automate Desktop
Welcome to the Power Automate forum!

Product updates

Microsoft Power Platform Community release plans