We had instances where after copy-pasting the schedule block, the dev forgets to change the schedule key,
This would break some of the scheduled jobs without explicit errors.
this PR add a spec that will prevent it from happening
This change allows the user to configure both IMAP and SMTP for an email inbox. IMAP enables the user to see emails in Chatwoot. And user can use SMTP to reply to an email conversation.
Users can use the default settings to send and receive emails for email inboxes if both IMAP and SMTP are disabled.
Fixes#2520
