If a user is attempting to send an email that has already been sent, they should be aware that if the email already exists in the destination server's database then many mail systems may not deliver the email again. This will depend on the mail system in use and how it handles duplication.
Microsoft Exchange, for example, has a default duplicate database setting of 7 days. This means if an email comes in with the same messageID and the client submit time is within 7 days of the original, it will delete it as a duplicate. Therefore the user who uses Instant Replay feature to resend an email less than 7 days old will not get the message.
If you are using another email application you should investigate to see if you have the option to adjust this value.
Instant Replay Feature is available only for the customers who have subscribed to the Business, Advanced or Professional Packages.
Please Note:
There are potential issues using this feature with Office 365 that are similar to those noted above with Exchange.
How To Resend An Email Via Instant Replay:
First, please ensure your company has Instant Replay enabled.
1- Go to Account Management - Features.
2- Select how old the mail can be to be used for the replay feature and click Save.
Resending an Email:
1- Go to Log Search and search for the email in question to resend.
2- Click the checkbox beside the email.
3- From the Actions drop down menu select Resend and click Apply.