Your product already sends email. The signup confirmation, the password reset, and the receipt. What it almost certainly does not do is notice that an account which signed up two weeks ago has not come back, and say something useful about it.
That gap is the entire email lifecycle at the seed stage. Not a system. Three messages and a definition.
Build three emails before you build anything else
The welcome. Sent immediately, from a person, not from a no-reply address. One job only: get the new account to the single action that makes your product make sense. Not a feature tour. One action.
The activation nudge. Sent when that action has not happened by the time it usually happens. If most accounts that stick do the thing within three days, send this on day four. It has to be triggered by what the account did, not by how many days have passed since signup.
The quiet-account check-in. Sent when an account that was active goes quiet. This is the one that catches churn while it is still reversible, and it is the one nobody builds because it requires you to have decided what "active" means.
Everything else, the feature announcements, the newsletter, the re-engagement campaign, can wait. Those three carry almost all of the value and cost you a week.
The hard part is the definition, not the tooling
I built backend financial systems as a developer before I did any of this, at Goldman Sachs and then Amazon, so I will be blunt about where the difficulty actually sits. Wiring an event to an email is a morning's work. Deciding what counts as activation for your product is the part that takes real thought, and no tool will do it for you.
Pick the one action that most strongly separates accounts that stay from accounts that leave. Write it down as a single sentence. If you cannot write that sentence yet, you are not ready to automate anything, and the honest next step is to talk to 10 customers rather than buy software.
Where a CRM fits, and where it does not
At this stage, a CRM is not a sales machine. It is a shared memory: who talked to whom, what they asked for, and what happened next. Its value is that the answer stops living in your inbox.
Two things are worth getting right early, because they are painful to retrofit:
One record per company, not per email address. Three people from the same account should not look like three customers.
The product writes to it. If your CRM only knows what your team typed into it, it will be wrong within a month. Signup, activation and cancellation should arrive automatically.
What you do not need yet is pipeline stages, lead scoring or a forecast. Those describe a sales team you do not have.
CASL applies to more of your product emails than you think
Canada's Anti-Spam Legislation governs commercial electronic messages sent to or from Canada, and founders routinely assume that email sent from inside a product is outside it. Some of it is. A lot of it is not.
Three requirements attach to every commercial electronic message you send:
Consent, either express or implied. Express consent needs a positive action, so no pre-checked boxes, and the burden of proving it sits with you as the sender.
Identification. You have to identify yourself and anyone you are sending on behalf of. Where that is impractical in the message itself, a link to a readily accessible page carrying the information is acceptable.
An unsubscribe mechanism that can be readily performed. It has to remain valid for at least 60 days after you send the message, and you have to process the request without delay, no later than 10 business days after you receive it (sourced from the CRTC).
There is a list of messages the consent requirement does not reach, in subsection 6(6) of the Act, and it covers a good deal of ordinary product email: messages that confirm a transaction the recipient already agreed to enter into, that give factual information about the ongoing use of a subscription or account, or that deliver a product update the recipient is entitled to receive (sourced from the Justice Laws Website).
The word doing the work there is what the message does. A receipt that also pitches an upgrade is no longer just a receipt. That single upsell line is the most common way a founder turns an exempt message into one that needs consent, and it is usually added by someone who has never read the Act.
This is marketing guidance, not legal advice. If your lifecycle email is going to carry real volume or real revenue, have counsel look at it once, early, when changing it is cheap.
What to require of whatever tool you pick
I have deliberately not named a product here, because the right one depends on your stack and the wrong one is usually chosen on a features page. What matters is that it can do these things:
Trigger on product events, not only on dates.
Write an unsubscribe back to your own user record, so the preference survives a tool migration.
Suppress a whole account, not just one address, when someone opts out.
Export everything, on your terms, without a support ticket.
What to measure, and what to ignore
Open rate is nearly useless now that mailbox providers prefetch images. Measure the thing the email was sent to cause: did the account take the action, and did it come back? If an email cannot be tied to a behaviour you care about, it probably should not exist.
Where this connects to the rest of your funnel
The lifecycle email starts on the signup page, so what that page asks for determines what your first message can say. What makes a trial signup page actually convert covers the page itself. If your primary path is a demo rather than a trial, what your pricing page has to do before a demo picks up the same thread from the other end.
Three emails, one definition, and a record that the product writes to. That is the whole starting position. The question worth sitting with is the definition: if you had to name in one sentence the thing a new account must do before it is worth anything to you, could you?