Sequenzy is an email platform for SaaS and product teams that charges by emails sent, not by the size of your contact list. It includes unlimited contacts and every feature on every plan. A free tier covers 2,500 emails per month, and the site lists $99 per month for 120,000 emails. It is a good fit for SaaS founders who want Stripe-triggered automations and AI-built sequences. Teams that send very high volumes to large lists should model costs first.
| Quick Facts | Details |
| Best for | SaaS and subscription businesses |
| Free plan | 2,500 emails/month |
| Example paid price | $99/month for 120,000 emails |
| Pricing model | Per email sent, unlimited contacts |
| Standout features | Stripe and PostHog triggers, AI sequences, MCP/agent support |
Introduction
Most email platforms charge by contacts. That means your bill rises as your list grows, even if you send the same number of emails. For SaaS companies with many trial users or free accounts, that model can get expensive.
Sequenzy turns this around. You pay for the emails you send, and the contact count is unlimited. In this review we explain how it works, what it includes, how pricing looks and where it may not be the best choice.
What Is Sequenzy?
Sequenzy combines three types of email in one account: transactional emails (receipts, password resets), one-off campaigns and event-driven automations. All of them share the same contact list, templates, sending domain and revenue reporting.
The product is built for teams who want emails triggered by product and billing events. For example, a failed Stripe payment can start a dunning sequence, a cancelled subscription can start a win-back flow, and a usage limit can trigger an upsell. The company is based in the US (Nic Tech Solutions, LLC) and its site notes it is made in Ukraine.
Sequenzy Review: Key Features
Event-Driven Automations
Connect Stripe or PostHog once, or send your own events with a single POST request. Each event can start a flow with branches, delays and conditions. Typical examples include dunning, win-back, onboarding and upsell sequences.
AI-Written Sequences
Sequenzy can read your website and draft full sequences, including trigger, timing, subject lines and copy. The site says setup with AI takes around two minutes from your URL. Every block stays editable, so you can refine the voice.
Transactional and Campaign Email
Send transactional email through a REST API or SMTP relay, and campaigns to your whole list or to segments built from plan, MRR and last activity. Subject line A/B tests can pick winners automatically, and send-time optimization chooses the best hour per subscriber.
Revenue Attribution
Rather than relying on last-click guesses, Sequenzy tracks sends to delivery, reply and revenue through your billing data. You can see revenue by flow, campaign and individual email.
Agent-Native Tools
Sequenzy exposes its features through an MCP server, CLI and API, so tools such as Claude, Cursor and Codex can build segments and draft emails. The site states that nothing sends until you approve it.
Everything Else
The platform lists 46 features, including landing pages, forms and popups, SMS and MMS, a team inbox, localization, deliverability monitoring, webhooks and reply tracking. Integrations include Stripe, Shopify, Paddle, Clerk, Supabase and PostHog.
Benefits of Sequenzy
- No contact-based pricing. Growing your list does not raise your plan by itself.
- All features on every plan. There is no feature gating between tiers.
- Built around SaaS moments. Failed payments, trial endings and usage limits are first-class triggers.
- Fast setup with AI. Sequences can be drafted from your website.
- Free migration. The team moves subscribers, tags, sequences and templates from tools such as Klaviyo, Mailchimp, Customer.io, Loops, ActiveCampaign, Brevo and ConvertKit.
- Founder-level support. The free plan lists personal founder support.
Sequenzy Pricing
Sequenzy sells sending volume. According to the pricing section, plans scale across a slider from 100 emails up to 3 million and beyond.
| Item | Details |
| Free plan | 2,500 emails/month, all features |
| Example paid tier | $99/month for 120,000 emails |
| Contacts | Unlimited on every plan |
| Daily limit | None |
| Watermark | No “Sent with Sequenzy” watermark |
| Billing | Monthly or yearly |
Included on every plan: unlimited team members, unlimited lists and segments, unlimited sending domains, visual automation builder, transactional API, goal tracking, A/B testing, SPF, DKIM and DMARC support, and API, MCP and CLI access. Dedicated IP options are available on paid plans, and you should contact the team for volume discussions.
Check the live slider for exact prices between tiers, since only a few price points appear in the page text.
Why Choose Sequenzy?
Choose Sequenzy if your list is large but your sending is moderate. A SaaS with 200,000 free users who receive occasional emails could pay much less than on a per-contact model. It is also attractive if you want to run email through an AI agent rather than clicking through dashboards. Several case studies on the site describe founders who migrated within a day and now manage campaigns from tools like Cursor.
It also suits teams that want one account for marketing and transactional email, so they avoid stitching together separate services.
Cons and Limitations
- Smaller track record. The site shows a 4.9-star rating from only 8 G2 reviews, so the evidence base is thin compared with older platforms.
- SaaS-first design. E-commerce or local-business users may find fewer ready templates and ecosystem options than at larger vendors.
- Volume pricing can bite. If you send frequently to a very large list, per-email pricing may cost more than contact-based pricing.
- Migration limits. Existing integration code needs to be rewritten for Sequenzy’s endpoints and event formats.
- Dedicated IP details need a conversation. Setup is not self-serve on the page.
Who Should Use Sequenzy?
| Good fit | Poor fit |
| SaaS founders and product teams | Brands sending daily blasts to huge lists |
| Teams using Stripe or PostHog | Users who need a large template marketplace |
| Developers who like API, CLI and MCP | Non-technical teams wanting hand-holding for everything |
| Businesses with large, low-engagement lists | Enterprises requiring long vendor track records |
How to Get Started
- Create a free account.
- Authenticate your sending domain with SPF, DKIM and DMARC.
- Connect Stripe, PostHog or send events via the API.
- Generate a welcome or dunning sequence from your website URL.
- Review each email, then approve and launch.
Conclusion
Sequenzy is a focused, modern option for SaaS teams that want revenue-aware email without per-contact fees. The free tier makes testing easy, and the combination of Stripe triggers, AI drafting and agent tools is useful for small, fast teams. The main trade-offs are a smaller review base and a niche focus. Test the free plan with one real flow, such as failed-payment recovery, and compare the revenue report against your current tool.
FAQs
What is Sequenzy?
An email marketing and transactional email platform with automations triggered by product and billing events.
How is Sequenzy priced?
By emails sent per month. Contacts are unlimited.
Is there a free plan?
Yes, 2,500 emails per month with all features.
Does Sequenzy integrate with Stripe?
Yes. Stripe events can start flows such as dunning and win-back. Paddle and Lemon Squeezy are also listed.
Can Sequenzy replace Mailchimp?
It can for many SaaS use cases. The team offers free migration from Mailchimp, Klaviyo and others.
Does it support transactional email?
Yes, through a REST API and an SMTP relay.
Can AI agents control Sequenzy?
Yes, through an MCP server, CLI and API. The site says nothing sends until you approve it.
