Hey Erik,
There are plenty of tools to use for BFCM, if you want to promote your products-discounts, you can use special email campaigns (tools like MailChimp or MailerLite) or you can use a popup tool such as Popupsmart or Poptin to grow your email list before the holidays, promote your products and etc. I would use both email campaigns and popups to make sure!
Popupsmart and Poptin both have various advanced targeting features to help site owners segment visitors better and target the right audience, Popupsmart has an option for 30 days cancelation and you can use it on many websites you want. Poptin has a drag and drop option if you are more comfortable with drag-drop. You might want to check their prices, when I check both, I see Popupsmart is cost efficient when compared to Poptin.
Good Luck!x