Build a multi-step onboarding drip for new customers

A SaaS company describes their process like this: "When someone signs up for a free
trial, I want a welcome email right away, a 'getting started' tips email two days
later, a check-in email on day 5 asking if they need help, and if they haven't logged
in by day 10, a re-engagement email before the trial ends on day 14."

AVAILABLE TOOLS: [App signup event (trigger), Uncanny Automator, email/SMTP, app
login-activity data]

Turn this into an implementation-ready automation recipe, thinking through what the
plain description leaves ambiguous:
1. Trigger and sequence: specify the exact scheduling mechanism for a five-email
   sequence spread across 14 days, and confirm it's built as independently timed
   sends off the signup timestamp rather than one send waiting on the previous send
   completing, so a delayed step 2 doesn't push every later step back.
2. Conditions: the day-10 re-engagement email depends on login activity, so state the
   exact query, "has not logged in since signup" versus "has not logged in in the
   last 10 days," since those produce different results for someone who logged in
   once on day 2 and never again.
3. Actions in order: for each of the five emails, confirm what cancels a later step,
   specifically, if the day-5 check-in email prompts a support ticket and the
   customer gets help, should the day-10 email still fire, or does resolved-support
   count as enough engagement to skip it.
4. Failure handling: if a customer converts to a paid plan on day 6, right between two
   scheduled emails, confirm the recipe cancels all remaining trial-onboarding emails
   rather than sending a "your trial is ending" email to a paying customer.
5. One edge case specific to this exact workflow: someone who unsubscribes from
   marketing email after the welcome email but is still an active trial user. Decide
   whether the remaining steps are purely transactional (should still send) or
   marketing (should stop), and justify the split.

Replace the workflow description and available tools with your own.