Enablement of TFA/Multifactor Authentication in source mailbox account. Generate an application specific password and use the same in Freshsales IMAP configuration (password field) by editing it. The generation of an application specific password can be obtained by contacting your respective email Provider.
In a smart sequence, the sequence would run only every 2 days as per the configuration. After the first run 1000 emails were sent and now on the next run the sequence will execute the second step. Once all the 4 steps get executed, the remaining emails from step 1 will be sent and in further runs, the remaining emails of all the steps will be sent.
Out of the 500 leads, only 440 leads were unique and the remaining 60 leads were duplicate entries. In the sales sequence, if “exclude duplicate leads from the campaign” option is checked, then duplicate entries will be skipped.