This article (How to White List In Gmail) will walk you through how to add my emails to safe senders in Gmail, but every email provider will have a similar process. This is important to do if you want to ensure you don't miss out on any updates from me. 

Also, if my email to you ends up in the Promotions tab, click on it and drag it over to the Primary tab, which will make it more likely to land there in the future. Cheers!