SHORTLIST / FIT AND LIMIT
Use each tool for a declared job.
Seat prices are only part of the cost: contacts, message volume, support seats, automation, AI usage, commerce apps, payment fees, implementation, data cleanup, and duplicate subscriptions can change the operating total. Reopen official plans, run a representative export and migration, retain consent and decision history, and prove every customer, billing, and reconciliation handoff before committing or exiting.
Fits: Fits source-backed search demand, competitor research, and campaign planning when product marketing needs evidence before approving positioning and distribution.
Limit: Search and competitor evidence does not own final claims, customer consent, campaign execution, the CRM record, or revenue attribution; people must verify interpretation.
Fits: Fits teams that want CRM, marketing, service, and lifecycle evidence connected around one customer record and accountable follow-up.
Limit: A broad hub can become expensive and over-centralized; field governance, consent, billing handoff, exports, and the boundary with finance still require explicit owners.
Fits: Fits approved social scheduling and channel response evidence when a community or marketing team needs a visible publishing and engagement record.
Limit: It does not own source claims, customer identity, private support, success commitments, consent across systems, or the authoritative revenue record.
Fits: Fits conversational support, in-product service, routing, and resolution evidence when the customer conversation needs a measurable human and automation boundary.
Limit: Conversation automation cannot authorize account access, billing changes, credits, cancellations, policy exceptions, or technical incident severity without accountable human review.
Fits: Fits commerce teams that need catalog, storefront, inventory, order, and fulfillment context joined to customer service and lifecycle work.
Limit: The commerce record is not the full CRM, payment processor, subscription ledger, general support suite, or accounting ledger; reconcile rather than copy dashboard totals.

Klaviyo
Fits: Fits consented B2C lifecycle segmentation and messaging when commerce events, retention journeys, exclusions, and attributable outcomes have named owners.
Limit: Message performance does not prove causal revenue, lawful consent, customer health, or invoice status; frequency, exclusions, identity, and attribution limits need review.

Salesforce
Fits: Fits governed account, opportunity, lifecycle, forecast, and commercial handoff records when stage definitions and changes must remain auditable across teams.
Limit: Configuration and enterprise scope add cost and administration; CRM stages do not replace source evidence, billing events, customer confirmation, or accounting reconciliation.

Chargebee
Fits: Fits subscription, usage, entitlement, invoice, amendment, cancellation, and renewal operations when commercial terms need an explicit billing contract.
Limit: Billing automation cannot decide non-standard terms, revenue recognition, customer success strategy, tax treatment, or ledger adjustments without finance and legal ownership.
Fits: Fits payment and checkout infrastructure when authorization, payment methods, refunds, disputes, webhooks, and payout evidence need a controlled integration surface.
Limit: Payment status is not the commerce, CRM, subscription, or accounting record by itself; fulfillment, customer action, fees, refunds, and payouts must be reconciled.