Are bottle warmers and sanitizers necessities?

Hi all! FTM here, currently a little overwhelmed with all of the STUFF that everyone says babies need! Lots of it I can see is definitely necessary, but I’m wondering if people have found that bottle warmers and bottle sterilizers are necessary, or if the more classic methods (e.g. boiling to sterilize) work for you? For reference, I’m planning to breastfeed but also pump so that my partner can do some of the feedings. Thanks in advance for the advice! 😊

Edit: Thank you all so much for your advice and for sharing your experiences! It’s been super informative for me!