Birmingham has a long history of making things and selling them, and a lot of its online shops still look like that: a workshop in the Jewellery Quarter, a family business that sells to trade and to the public, a brand that grew out of a market stall. The email needs are practical. Keep past buyers coming back, keep trade customers ordering, and stop depending on whatever a marketplace algorithm does this month.
Working with a freelancer rather than an agency means one person builds the flows, writes the campaigns and reads the numbers. You email the person doing the work, and nothing gets lost between an account manager and a designer. The about page says who that is.