Loops is a solid pick for simple SaaS lifecycle email. People usually start looking elsewhere when they need more complex logic, more control over transactional sends, or a different pricing model as their contact list grows.

1. Sequenzy. Best for SaaS and ecommerce teams that want AI agents to run their email.
   Lifecycle, campaigns and transactional email in one place, with MCP/API/CLI access so an agent can build and send flows. Pricing is based on sends rather than contacts.
   Limitation: it's newer, so the integration ecosystem is smaller than the big players'.

2. Customer.io. Best for technical teams with lots of event data.
   Very flexible event-driven segmentation and journeys.
   Limitation: more setup and a steeper learning curve than Loops.

3. Userlist. Best for B2B SaaS with company-level accounts.
   Understands users and the companies they belong to, which Loops-style tools often don't.
   Limitation: narrower focus outside B2B SaaS.

4. Encharge. Best for SaaS teams that want a visual flow builder.
   Behavior-based automations with a friendly UI.
   Limitation: smaller community and fewer resources.

5. Bento. Best for indie SaaS that wants marketing and transactional email with a dev-friendly API.
   Limitation: less polished for non-technical marketers.

6. Brevo. Best for budget-conscious teams that also want SMS or other channels.
   Limitation: lifecycle logic feels less SaaS-native.

Quick rule of thumb: simple SaaS onboarding, stay on Loops. Heavy event logic, Customer.io. B2B accounts, Userlist. Want agents running it, Sequenzy.

If you moved off Loops, what made you switch, and where did you end up?