Ask ten marketers how often to email your list and you get ten confident, contradictory answers. Here is the honest one for a small business: two to four campaigns a month, sent on a rhythm you can actually keep. The number matters less than the consistency.
Why consistency beats volume
Subscribers form a habit around your emails. When they arrive on a predictable rhythm, people recognize the sender name, expect the content, and open more. Inbox providers see that engagement and route you to the inbox. When you email in bursts (three in Black Week, then silence until spring) both humans and filters treat you like a stranger every time you return.
Signs you send too little
- Subscribers reply asking whether you still exist
- Open rates drop over time because people forgot signing up
- Every campaign feels like a big event that takes a week to write
Signs you send too much
- Unsubscribes spike on ordinary sends, not just promotions
- You struggle to fill each email with anything worth reading
- Open rates decline steadily while frequency stays high
A cadence that works by business type
| Business | Cadence | What to send |
|---|---|---|
| Shop / e-commerce | Weekly or biweekly | New arrivals, seasonal picks, offers |
| Services / studio | Biweekly or monthly | Recent work, tips, availability |
| Restaurant / local | Biweekly | Menus, events, seasonal specials |
Seasonal peaks are the exception: during Black Week or before Christmas, two or three sends in one week is normal and expected.
The blank-page problem
Most small businesses don't fail at frequency because of strategy. They fail because writing every campaign from zero is exhausting. That is exactly the problem SendMerlin exists to solve: it proposes your next four weeks of campaigns from your brand and the retail calendar, drafts each one, and you edit instead of staring at a blank page. A sustainable cadence stops being a discipline problem.
Frequently asked questions
Is once a month enough?
It keeps your list technically alive, but engagement and revenue usually improve at two to four sends a month. Below monthly, subscribers forget who you are and complaint rates rise.
Will sending weekly annoy my subscribers?
Not if each email has a reason to exist. People unsubscribe over irrelevance, not frequency. A useful weekly email outperforms a filler monthly one.
Should I pause sending in quiet months?
Avoid full silence. A long gap resets your sender reputation warm-up and makes your next campaign feel like cold mail. Send at least something monthly.