Mass Mailing to all users gets this error:
Can't call method "insert_id" on an undefined value at GMail::Messages::insert_user line 1735.
The message is not sent and is inserted as undeliverables.
How to fix this?
Anup
Can't call method "insert_id" on an undefined value at GMail::Messages::insert_user line 1735.
The message is not sent and is inserted as undeliverables.
How to fix this?
Anup