I have created one task list.In that list Status,Assigned To, Task column is there.one month time period will be given for every task from created date.If the status column is not changed as completed within one month , the assigned to person should get the mail with the task name and "your task is not completed". How to create workflow for that using sharepoint designer.I am using sharepoint designer 2010,sharepoint 2016 onpremise.
1.First we need to add a variable (end date):
2.Then set the variable value as Start date +30 days, when Today=end date and the status is not equal to "Completed", it will send mail to people assigned to. (Add a step: send a mail, then select people > Workflow lookup for a user > set the value in pop-up window as the screenshot shows:
3.As to the email content, you could use "[%Current Item:Task Name%]has not been completed." as it is shown in the screenshot.