Send too often and you lose people in two ways: unsubscribes, which are visible, and quiet disengagement, which is not. The second is the larger problem, because someone who stops opening still counts as a subscriber while being unreachable, and there is no signal telling you it happened.
The two ways a list degrades
An unsubscribe is honest. Someone decided this is not for them, and the list is now slightly more accurate than it was.
Disengagement is worse. Someone stops opening, keeps receiving, and the list looks unchanged while a growing share of it is unreachable. When the message that genuinely matters arrives, they have already learned to ignore your name in an inbox.
That second effect is why frequency matters more than it appears to. The cost is not paid at the time; it is paid the next time you have something worth reading.
What determines the right frequency
How often people buy from you
The main factor. A roof is bought once. A service is annual. Consumables are monthly. Emailing considerably more often than the purchase cycle means most messages arrive when nothing is relevant.
Whether you have something to say
Frequency set by a calendar produces filler, and filler is what teaches people to stop opening. Sending when there is a genuine reason produces an irregular schedule that performs better than a regular empty one.
What they expected
Someone who gave an address for a seasonal reminder did not agree to monthly contact. Sending more than was implied is where unsubscribes come from, more than the absolute number.
A workable pattern for a service business
Four to eight messages a year across all types, which is far less than general advice suggests and matches how the work is actually bought.
| Message | Roughly when |
|---|---|
| Seasonal prompt | Twice a year, before the season rather than during it |
| Service reminder | Triggered by the customer's own date, not a calendar |
| Follow-up after a job | Triggered by completion |
| Something useful | Once or twice a year |
Two of those four are triggered by the individual customer rather than sent to everyone, which means any given person receives fewer messages than the total suggests while each one is more relevant.
Triggered beats scheduled
The single most useful principle here.
A message sent to the whole list on the first of the month is relevant to a small fraction of it. A message sent to one customer because their equipment is due is relevant to all of its recipients.
Triggered messages let you communicate more often in total while each person hears from you less, which resolves the frequency tension entirely. It requires the record of who had what work and when, which is the thing most small businesses already hold and never use.
Reading the signals
- Unsubscribe rate rising after a change in frequency is the clearest signal you went too far.
- Open rate declining over several sends is the disengagement problem appearing before the unsubscribes do.
- Complaints, meaning people marking messages as junk. Rare and serious, since it affects whether future mail reaches anyone.
- Replies asking to be removed rather than using the link, which usually means the unsubscribe was hard to find.
On a small list, judge these across several sends rather than one. A single poor result is frequently the subject line, the timing, or chance.
The people who have stopped opening
Worth handling deliberately rather than continuing to send indefinitely.
Someone who has not opened anything in a year is not a subscriber in any useful sense, and continuing to send costs you in deliverability terms, since providers notice mail that is never engaged with and treat future sends accordingly.
The options are a single message asking whether they want to keep hearing from you, or quietly moving them to a list you send to once or twice a year rather than removing them entirely. Either is better than sending the same volume into silence.
Seasonal bursts
Some businesses genuinely need to send more during a short period, such as a booking window or a seasonal push.
That is fine and it works better when it is framed. Telling people at the start that this is a short series for a specific reason, and then stopping, is a different experience from an unexplained increase in volume.
What causes damage is the increase becoming permanent without anyone deciding, which is how a business that sent four messages a year ends up sending twenty.
The underlying point
Frequency is a symptom rather than the problem. A business with genuinely useful things to send can send more often without cost; a business sending because it feels it should will lose people at any frequency.
The useful question is not how often, it is whether each message would be missed if it did not arrive. Where the honest answer is no, the fix is not sending less, it is having something worth sending, which is set out in what a small business should send by email.
Frequently asked questions
How often should a small business email its list?
Four to eight times a year across all message types for a typical service business, which matches how the work is actually bought rather than what general advice suggests.
What is worse than an unsubscribe?
Quiet disengagement. Someone who stops opening still counts as a subscriber while being unreachable, and there is no signal telling you it happened until the message that matters is ignored.
What determines the right frequency?
How often customers buy from you, whether you genuinely have something to say, and what they expected when they gave you the address. Sending more than was implied is where unsubscribes come from.
What is a triggered email?
One sent because of something specific to that customer, such as equipment being due, rather than to the whole list on a date. It lets you send more in total while each person hears from you less.
What should I do about subscribers who never open?
Send one message asking whether they want to keep hearing from you, or move them to a list you contact once or twice a year. Continuing to send into silence affects deliverability for everyone else.
Is it acceptable to send more during a busy season?
Yes, if it is framed. Telling people it is a short series for a specific reason and then stopping works well. The damage comes from the increase quietly becoming permanent.
West Coast Media Solutions Inc. provides web design, web development, hosting, digital marketing, and business consulting to organisations across Canada, drawing on more than twenty-five years in the field.
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