> You have to build up your domain and IP reputation for a long time first.
replyOr buy/rent domains/IPs that have good reputations, as there are services that specializes in just bringing up the reputation for stuff so they can sell it once "good". Same exists for user accounts for various platforms like reddit and so on.
Sure, you'd burn that reputation extremely fast as Google detects your sending patterns change and the first few users start reporting as spam.
reply> you'd burn that reputation extremely fast
replyYes, that is indeed the point of those; "build up reputation -> sell/rent -> someone uses it to burn reputation -> rinse and repeat".