Version? This was supposed to be fixed in 1.5.10.
https://ww.wp.xz.cn/plugins/postman-smtp/changelog/
1.5.10 – 2015-03-29
Fix for Fatal error: Cannot redeclare class PEAR_Common in C:\PHP5\PEAR\PEAR\Common.php – similar to this error in WP Minify
Version of Postman 1.5.10 and version of Postman Gmail API Extension is 1.0.0
Ah. That makes sense. I didn’t release the same fix to the Gmail API Extension yet.
Thank-you for the bug report!
In the meantime, the Postman Gmail Extension v1.0.1 beta should solve your issue.
it installed fine but when I click on the link to obtain google auth I get:
401. That’s an error.
Error: invalid_client
The OAuth client was not found.
Request Details
scope=https://mail.google.com/
response_type=code
access_type=offline
redirect_uri=http://lifeskillsnw.org/wp-admin/options-general.php?page=postman
login_hint=Robwakeleygmail.com
approval_prompt=force
state=cf5530d9e441e0d78574353214373569
client_id=robwakeleygmail.com
That’s all we know.
never mind I figured out the process for getting OAuth information set up in Google and now it works.