If i switch from yahoo to godaddy will my business email be disrupted during the transfer?

Yes:





1) If you're using an @yahoo.com email address you simply can't transfer that to GoDaddy. If you are hosting your own domain through Yahoo currently and are going to move to GoDaddy, then see #2





2) Switching hosts will mean needing to update your DNS which can take some times - few hours to a day? While the changes are propagating some requests for yourdomain.com will be sent to yahoo's servers with others will go to GoDaddy.
If i switch from yahoo to godaddy will my business email be disrupted during the transfer?
Yes, because your e-mail address will change and you'll have to notify everyone who sends to your Yahoo e-mail address.