Loops vs Userlist in 2026: developer-simple SaaS email vs company-account lifecycle automation
Both send lifecycle and transactional email to SaaS users. Loops keeps the model to four ideas and no per-seat fee. Userlist adds a company-account data model most competitors can't match, at a price nearly triple Loops' entry point.
Loops
Userlist- Userlist supports many-to-many user-to-company relationships, letting campaigns trigger at the account level; Loops has no comparable company-account data model in its own feature list.
- Userlist's Basic plan starts at $149/month; Loops has a genuine free tier up to 1,000 subscribers and a paid tier starting around $49/month.
- Userlist includes in-app messages as a native channel alongside email; Loops is an email-only platform with no in-app messaging capability.
- A/B split testing and conversion goal tracking on Userlist require its $349/month Professional plan; Loops' own data does not describe a comparable A/B testing or conversion-goal feature at any tier.
- Loops has no per-seat pricing at any tier; Userlist caps team seats at 5 on Basic and 10 on Professional, requiring Enterprise for more.
- Loops has official developer SDKs for Node, Next.js, Ruby, PHP, and NuxtJS; Userlist offers an HTTP API with official libraries but is not positioned primarily around a developer-first workflow.
- Both platforms have a 14-day free trial on paid tiers, though Loops additionally offers a standing free plan Userlist does not.
Loops and Userlist are the rare pair in this batch that actually compete for the same job: sending marketing, lifecycle, and transactional email to a SaaS product's existing users. The difference is depth versus simplicity. Loops keeps everything reduced to contacts, properties, events, and event properties, prices by contact count with no per-seat fee, and has a real free tier. Userlist adds a genuine technical differentiator on top, a data model that understands many-to-many relationships between users and companies, so a single event can trigger a campaign to everyone at an account, plus native in-app messaging and A/B testing. That depth starts at $149/month, more than triple Loops' roughly $49/month entry point, with no free tier at all.
The tools at a glance
Loops
Unified email platform for SaaS teams covering marketing, product, and transactional email from a single simple interface
Loops keeps its data model to four concepts: contacts, contact properties, events, and event properties. Once a developer understands those, they understand the whole system, and the same simplicity carries into the API, which ships with SDKs for Node, Next.js, Ruby, PHP, and NuxtJS. An npm package with 251K weekly downloads points to genuine adoption among developer teams.
One account handles marketing campaigns, product lifecycle sequences, and transactional sends like password resets, priced by subscribed contact count with no per-seat fee. The free plan, up to 1,000 subscribers and 4,000 sends a month, is enough to fully validate an integration before paying anything.
What Loops does not have is a company-account data model. It tracks individual contacts and their events, but has no built-in concept of a company with multiple associated users, and it has no in-app messaging or A/B testing feature. For a single-user SaaS product, that gap rarely matters; for a B2B tool sold to teams, it can be a real limitation.
| Feature | Free $0/mo | Paid (contact-based) Starts at ~$49/mo |
|---|---|---|
| Company-account data model | ✗ | ✗ |
| In-app messages | ✗ | ✗ |
| Transactional email | Limited | ✓ |
| A/B testing | ✗ | ✗ |
Userlist
Behavior-based email automation for SaaS with company-level workflows, in-app messages, and A/B testing
Userlist's core differentiator is a data model most competitors, Loops included, do not attempt: many-to-many relationships between users and companies. A single user can belong to multiple accounts, and a campaign can trigger for an entire company, not just an individual, when that account crosses a usage threshold. For B2B SaaS sold to teams, this removes workarounds that other platforms require.
One visual workflow builder handles marketing, lifecycle, and transactional email together, and in-app messages are a native channel alongside email for onboarding nudges and feature announcements delivered inside the product itself. A/B split testing with up to five paths and conversion goal tracking, available on the $349/month Professional plan, turn campaigns into measurable experiments.
The entry price reflects that depth: $149/month for the Basic plan covering 10,000 users, with team seats capped at 5 and custom properties capped at 20 until you move up a tier. There is no standing free plan, only a 14-day trial, so testing Userlist means committing to evaluate it within that window rather than running a real integration indefinitely at no cost.
| Feature | Basic $149/mo | Professional $349/mo | Enterprise Custom |
|---|---|---|---|
| Company-level automation | ✓ | ✓ | ✓ |
| In-app messages | ✓ | ✓ | ✓ |
| A/B split testing | ✗ | ✓ | ✓ |
| Team seats | 5 | 10 | Custom |
Head-to-head feature comparison
| Feature | Loops | Userlist |
|---|---|---|
| Pricing model | Contact-count based, no per-seat fee | Contact-count based, additional per-1,000-users fee |
| Free tier | Yes, up to 1,000 subscribers | No; 14-day trial only |
| Company-account data model | No | Yes, many-to-many users and companies |
| In-app messages | No | Yes, on all plans |
| A/B split testing | No | Yes, from Professional plan ($349/month) |
| Transactional email | Yes, included on all plans | Yes, included on Basic and Professional |
| Team seats included | Unlimited on every tier | 5 on Basic, 10 on Professional |
| Developer API / SDKs | Yes, Node, Next.js, Ruby, PHP, NuxtJS SDKs | Yes, HTTP API with official libraries |
| MCP integration | Yes, MCP server included | Not a listed feature |
| Starting price (paid) | ~$49/month | $149/month |
Which should you choose?
LoopsUserlistLoopsUserlistLoopsUserlistThis is the one comparison in the batch where picking wrong actually costs you something, since both tools solve the same job. The deciding factor is your product's shape: if a single person is the buyer and user, Loops' simpler model and lower price are hard to beat. If your product is sold to teams, where a company account can have many users and you need a campaign to reach all of them when the account, not just one person, hits a milestone, Userlist's data model does something Loops was not built to do, and that capability is worth its higher price.
Bottom line
Choose Loops if you are an early-stage or individual-user SaaS product that wants lifecycle and transactional email done simply, cheaply, and with a real free tier to start. Choose Userlist if your product is sold to teams and you need company-level automation, in-app messaging, and A/B testing, and the jump from roughly $49 to $149 a month is a reasonable trade for solving a data-modeling problem Loops does not address. Do not pick Userlist purely for A/B testing unless you are also budgeting for its $349/month Professional tier, since that is where the feature actually lives.
Frequently asked questions
Does Loops support company-level automation like Userlist does?
No, Loops has no company-account data model; it tracks individual contacts and their events without a built-in concept of a company with multiple associated users. Userlist's many-to-many user-to-company model is specifically designed for B2B SaaS products where a team, not an individual, is the buying and usage unit.
Is Loops or Userlist cheaper for a small SaaS startup?
Loops is cheaper at every stage: its free plan covers up to 1,000 subscribers, and its paid tier starts around $49/month based on contact count with no per-seat fee. Userlist has no free plan, only a 14-day trial, and its Basic plan starts at $149/month for 10,000 users.
Does Userlist include in-app messaging the way Loops does?
Userlist includes in-app messages as a native channel on every plan, letting you deliver onboarding nudges or feature announcements inside the product itself alongside email. Loops has no in-app messaging feature at all; it is an email-only platform.
Which tool is better for A/B testing onboarding email sequences?
Userlist is the clear choice for this, with A/B split testing across up to five paths and conversion goal tracking available on its $349/month Professional plan. Loops' own feature data does not describe a comparable A/B testing or conversion-goal capability at any tier.
Does Loops charge per seat the way Userlist limits team members?
No, Loops has no per-seat pricing at any tier, so an entire team can use the platform without adding to the cost. Userlist caps team seats at 5 on its Basic plan and 10 on Professional, with unlimited or custom seat counts only available on the Enterprise tier.
Is Userlist worth the higher price if my SaaS product only has individual users, not team accounts?
Probably not. Userlist's core advantage, its many-to-many user-to-company data model, is built specifically for products sold to teams. If your product has individual users rather than company accounts, that differentiator does not apply, and Loops' simpler, cheaper model is likely to cover the same lifecycle and transactional email needs without the added cost.