Klaviyo or Omnisend — which should I pick?

Both are mature email + SMS platforms with real free tiers. Omnisend is the SMB value pick: every feature is available at every tier and the entry price is lower, so small lists get the whole toolkit cheaply. Klaviyo is the depth pick: stronger segmentation, predictive analytics, and the largest ecosystem, priced by contact count. The honest tiebreaker is list size and how much of the depth you will actually use — trial both against your real list before committing.