A GRIT Logic Labs productIn Development

Own your list. Pay for sends — not subscribers.

SNAILMAIL is email, SMS, and first-party visitor recognition that bills like infrastructure — roughly $0.10 per 1,000 emails on your own Amazon SES — instead of taxing you per subscriber. You own the data, the domain, and the reputation.

See the receiptsFree to join · no spam

slow on overhead. fast on your bill.

Built for the stack you already run

Amazon SESShopifyStripeTwilioPostgres
The per-subscriber tax

Most marketing software charges rent on your own list.

Klaviyo bills on total active profiles — so you pay for dead 2022 signups who never open. Attentive locks you into annual contracts with minimums you pay regardless. Mailchimp bills you for contacts who unsubscribed years ago. The bill scales with list size, not results.

// the SNAILMAIL belief

Your list is your asset.

Incumbents rent it back to you — by the head.

You pay for dead signups who never open.

∴ Cost should track what you send, not who you store.

Do the math

What you pay to store a list vs. what it costs to send one.

Per-subscriber platforms charge by list size every month — engaged or not. With SNAILMAIL, the cost follows what you send.

List sizeKlaviyoMailchimpCustomer.ioSNAILMAIL$49 fee + SES fees
10,000 contacts~$150/mo~$110/mo~$145/mo~$57/mo
50,000 contacts~$720/mo~$385/mo~$505/mo~$89/mo
100,000 contacts~$1,380/mocustom~$1,000+/mo~$129/mo

Incumbent columns are the monthly plan price at that list size, which includes a sending allowance. The SNAILMAIL column is the planned $49/mo platform fee plus the Amazon SES bill for 8 sends to the entire list each month (~$0.10 per 1,000 emails). It leaves out optional AWS extras such as dedicated IPs. SNAILMAIL pricing is planned and may change; incumbent figures are third-party teardown estimates (2025–2026), so verify against current vendor pricing.

The competition, honestly

What people actually say about the incumbents.

Complaints and pricing reported on G2, Capterra, Trustpilot, Reddit, and the Shopify Community — plus the send-priced tools closest to us — and exactly where an own-your-data, send-priced tool wins.

Complaints below are summarized from public reviews and third-party teardowns, and some are paraphrased rather than quoted word for word. Follow the sources on each card, and check current vendor pricing before relying on a figure.

Email & SMS platforms

Most of them monetize stored contacts, not emails sent — so your bill scales with the part of your list that makes you the least money: the inactive, the unsubscribed, the dormant.

Klaviyo

Email / SMS

The most data-rich email + SMS platform for Shopify stores.

How they bill

Per active profile. ~$150/mo at 10k contacts, ~$720 at 50k, ~$1,380 at 100k (email only; SMS billed separately). On Feb 18, 2025 Klaviyo switched to billing on total active profiles — you pay whether or not you email them.

The gotcha

You pay for every profile in your database — including dead 2022 signups who never open — and the bill won't drop automatically when you clean the list.

What users report

  • Been paying for 50K+ profiles when maybe 15K actually care about my emails. — Shopify Community, 2025
  • I reduced my contacts by ~50,000 and Klaviyo kept charging the same amount — support said billing doesn't auto-adjust down. — Klaviyo Community, 2025
  • My email revenue hasn't budged in months but my bill keeps going up. — Shopify Community, 2025

Where SNAILMAIL wins

  • Send-priced, not list-priced: ~$0.10 per 1,000 emails on your own SES, so a send to a full 100k list costs about $10 in SES fees instead of $1,380/mo just to store it.
  • Inactive subscribers cost effectively nothing — no "ghost profile" tax on people who never open.
  • Your profiles live in your own database (full export, no lock-in), and the sending reputation is yours.
SourcesOmnisend — Klaviyo Pricing 2026Shopify CommunityMavlers — Klaviyo 2025 Pricing Update

Attentive

Email / SMS

Enterprise AI-powered SMS + email for high-volume DTC brands.

How they bill

Opaque, sales-negotiated, annual contracts — no public pricing. Effective spend ~$10k–$15k/mo: platform fee + per-message + a $2k–$3k quarterly minimum you pay even if you send nothing, plus a ~$500/mo leased short code and $2k–$5k setup. Typically 6–12 month auto-renewing terms.

The gotcha

Annual contract, undisclosed pricing, minimums you pay regardless of usage, an exclusivity clause, and leased short codes you forfeit on exit — you never truly own your subscribers, your numbers, or your way out.

What users report

  • Budget for twice what their sales team quotes you, because that is what will actually hit your account. — Trustpilot (paraphrased), 2025
  • We were surprised by the rigid quarterly minimums and couldn't scale spend down in slow seasons. — G2 review, 2024
  • Strict SMS exclusivity with long-term lock-in and significant financial penalties if you adapt your stack. — G2 / Trustpilot, 2025

Where SNAILMAIL wins

  • No contracts, no minimums, no exclusivity — pay-as-you-go at your own SMS provider's published per-message rates, with nothing to forfeit if you leave.
  • You own your subscriber list and your sending domain; there's no account rep gatekeeping your own data.
  • Transparent economics up front instead of "budget for 2x the quote," and no enterprise floor that prices out smaller brands.
Sourcesasktimmy — Attentive Pricing Guide 2025Omnisend — Attentive PricingG2 — Attentive Reviews

Mailchimp

Email / SMS

The default all-in-one marketing platform for SMBs (now Intuit).

How they bill

Per total contact — counting subscribed, unsubscribed, AND non-subscribed contacts. ~$110/mo at 10k, ~$385 at 50k. You must manually archive dead contacts to stop paying for them. Free plan gutted from 2,000 contacts (2022) to 250 (2026).

The gotcha

You pay full price for people who unsubscribed years ago, and the bill silently jumps a tier the moment you import a list — even of non-subscribers.

What users report

  • I expected about $60 and got a $160 bill, with the next tier sitting at $350/month. — r/MailChimp, 2024
  • Support for billing is basically nonexistent — you can't call anyone, you fill out a form and wait 3–4 days. — G2 review, 2024
  • An independent test of 65k emails landed 78% in inbox, 20% in spam — shared IPs mean a neighbor's spam drags you down. — Deliverability teardown, 2026

Where SNAILMAIL wins

  • Cost scales with emails actually sent, not contacts stored — contacts you never send to cost nothing, not $385+/mo.
  • Send from your own domain, so the domain reputation you build is yours — and add dedicated IPs through AWS if you want to leave the shared pool too.
  • No tier cliffs or forced upgrades the instant you import a list.
Sourcesgroupmail.io — Mailchimp Pricing 2026retainful — Mailchimp Pricingprospeo — Mailchimp Deliverability

Omnisend

Email / SMS

Shopify-focused email + SMS + push with a genuinely usable free tier.

How they bill

Bills on subscribers, plus non-subscribers who receive automated messages; unsubscribed contacts aren't billed — honest, and a real advantage over Mailchimp. ~$132/mo at 10k (Standard); 50k and up is a custom quote (older teardowns put 50k near $413). SMS credits, A2P registration, and tier auto-upgrades are separate.

The gotcha

The sub-billing is fair, but reported inbox rates sit around 75–80% and degrade noticeably past 50k contacts — risky when deliverability is mission-critical.

What users report

  • Hidden fees like SMS top-ups, tier auto-upgrades, and A2P registration can catch new users off guard. — sender.net pricing review, 2025
  • Some features are locked behind higher-tier plans — challenging for a small business still growing. — G2 sentiment, 2025
  • Inbox placement averaged ~75% and there's no deliverability-score dashboard like Klaviyo's. — Deliverability teardown, 2025

Where SNAILMAIL wins

  • Control DKIM/DMARC and warmup on your own sending domain, and watch bounce and complaint rates directly in your own SES account.
  • No tier auto-upgrades — email is one flat per-send cost. SMS runs on your own Twilio account at its published rates, where you also handle A2P registration.
  • At 50k+ contacts, where Omnisend moves to a custom quote, your SES cost stays flat per send and under your control.
Sourcesflowium — Omnisend Pricingsender.net — Omnisend PricingG2 — Omnisend Reviews

Sendlane

Email / SMS

DTC email + SMS positioned on deliverability and hands-on support.

How they bill

Priced by monthly email volume with unlimited contacts — not per subscriber. From $100/mo for 50,000 sends, rising to roughly $600/mo at 500,000 and $1,100/mo at 1M; SMS credits are billed separately. 60-day trial, no permanent free tier.

The gotcha

You buy a monthly send tier whether or not you use it, and the SMS cost you actually pay can come in higher than quoted — discovered after you've signed.

What users report

  • I found out after the contract was signed that my real cost per SMS was higher than quoted. — Capterra review, 2024
  • When we tweak a complex flow there's no way to revert — we had to rebuild entire flows from scratch. — G2 review, 2024
  • I find Sendlane a bit expensive, which makes it less accessible for smaller senders. — G2 review, 2024

Where SNAILMAIL wins

  • No monthly send tier to buy up front — you pay SES for what you actually sent, at about $0.10 per 1,000.
  • No "SMS cost after contract" surprises: wire your own SES and SMS provider at transparent per-unit rates.
  • Your flows and templates live in your own data — versioned and recoverable, not stuck with no rollback.
Sourcesencharge — Sendlane ReviewCapterra — SendlaneSendlane — Pricing

Customer.io

Email / SMS

Developer-centric, event-driven behavioral messaging for lifecycle teams.

How they bill

Bills on the peak number of uniquely identified profiles ever in the account — including inactive and, per reviews, deleted ones. ~$145/mo at 10k, ~$505 at 50k; Premium starts ~$1,000/mo billed annually (~$12,000/yr minimum upfront).

The gotcha

You're billed for the peak count of every profile you've ever identified — including inactive and deleted ones — and renewals can roughly double with no grandfathering.

What users report

  • Costs scale with total contacts rather than active users or emails sent — it charges for inactive or even deleted profiles, so you get nasty surprises on the invoice. — G2 review, 2024
  • Every five years or so they almost double prices — massive increases with no grandfathering. We switched and cut costs 3x. — Trustpilot (relayed), 2024
  • Steep learning curve, pricing that scales fast, and a clunky legacy email editor. — Review roundup, 2025

Where SNAILMAIL wins

  • No per-profile tax: store a million profiles in your own DB for $0 — you pay only ~$0.10 per 1,000 emails actually sent.
  • No annual $12k Premium floor and no 2x renewal shocks — you own the data and the SES account, so no vendor has the leverage to re-price you.
  • Deleting or ignoring inactive profiles costs nothing and is never billed retroactively.
Sourcesencharge — Customer.io Pricingeesel — Customer.io ReviewsG2 — Customer.io Pricing

Send-priced & bring-your-own-SES tools

The closest alternatives. They already charge for sends rather than stored contacts, so price alone isn't the argument here — the question is what comes on top of the sending.

Shopify Email

Send-priced

Shopify's built-in email tool, sending from inside the store admin.

How they bill

10,000 emails free each month, then $1 per 1,000 — dropping to $0.65 after 300,000 and $0.55 after 750,000. Abandoned-checkout emails are always free.

The gotcha

Hard to beat for a small list. At volume the per-send rate is about ten times SES: 400,000 emails a month runs roughly $355, against about $40 in SES fees. And it only works inside Shopify.

Where SNAILMAIL wins

  • About $0.10 per 1,000 emails on your own SES at any volume, plus a flat platform fee.
  • Your list and its history live in your own database rather than inside one commerce platform.
  • SMS and first-party visitor recognition alongside email, in one place.
SourcesShopify Help — Shopify Email pricing

Sendy

Send-priced

Self-hosted newsletter software that sends through your own Amazon SES.

How they bill

$69 one-time license, plus a server of your own to run it on and SES fees for sending. No monthly fee.

The gotcha

It's a PHP app you install, host, and update yourself. Its site lists no Shopify integration and no SMS, so store events have to be wired in through third parties such as Zapier.

Where SNAILMAIL wins

  • Hosted for you — no server to patch — with profiles still in a database you own.
  • Store events and flows (abandoned cart, post-purchase, win-back) are the core of the product, not a Zapier project.
  • SMS through your own Twilio and first-party visitor recognition, which a newsletter tool doesn't attempt.
SourcesSendy

MailBluster

Send-priced

Low-cost email marketing that sends through your own provider.

How they bill

Pro is $5/mo (billed yearly) plus $0.60 per 1,000 emails, on top of what you pay your own provider — Amazon SES, Postmark, Mailgun, or SMTP2GO. A managed-sending plan is also offered.

The gotcha

The per-email fee is several times the SES cost it sits on top of (SES is about $0.10 per 1,000). Its pricing page lists WooCommerce and Zapier for ecommerce, but not Shopify or SMS.

Where SNAILMAIL wins

  • A flat platform fee, not a per-email markup on top of your SES bill.
  • Built around Shopify store events, with SMS through your own Twilio.
  • First-party visitor recognition tied to your own customer records.
SourcesMailBluster — Pricing

BigMailer

Send-priced

Email marketing for agencies and multi-brand teams, with an option to send through your own SES.

How they bill

Free tier for roughly 1,000 contacts on your own SES. Paid plans are priced by contacts stored — its docs list $7.50 per 5,000 contacts plus SES fees on your own account, from $30/mo. Figures differ between its own pages, so check before relying on one.

The gotcha

Even on your own SES, the bill is still set by how many contacts you store rather than what you send.

Where SNAILMAIL wins

  • No per-contact pricing at all: storing a contact costs nothing.
  • Built for one store's lifecycle — flows on store events, SMS, visitor recognition — rather than multi-brand newsletter management.
SourcesBigMailer — Plans and pricing (docs)

Visitor-ID & "de-anonymization" tools

They reveal strangers' emails by matching your traffic against a licensed third-party data co-op — so you end up cold-emailing people who never opted in to you. That's CAN-SPAM, GDPR, and sender-reputation risk you inherit.

instant.one

Visitor-ID

Identify anonymous shoppers and recover carts (Shopify + Klaviyo).

How they bill

Not public — quote-gated. The pricing page makes you enter site details to "unlock projected results and pricing." No fixed tiers published.

The gotcha

"First-party" positioning plus gated pricing and a thin independent-review trail makes it hard to confirm how much is genuinely first-party versus the same broker-sourced de-anonymization — you buy on a demo, not on verifiable data.

What we found

  • Pricing is gated behind a form and there's very little independent review volume to vet the match-rate claims. — Our research, 2026
  • Published match-rate numbers vary and none are independently verified. — Our research, 2026

Where SNAILMAIL wins

  • SNAILMAIL's mechanism is simple to check — your cookie plus your own customer records — instead of asking you to trust gated claims about "first-party capture."
  • Transparent, usage-clear pricing instead of a quote-gated custom deal behind a sales call.
  • Recognizing your own returning subscribers needs no identity-graph licensing and carries no data-broker liability — the ambiguity around the sourcing simply doesn't exist.
Sourcesinstant.one — Pricing (gated)Opensend — instant.one alternatives

Retention.com

Visitor-ID

Reveal the emails of anonymous visitors (a 500M+ contact identity graph).

How they bill

Around $0.25 per email captured with a ~$500/mo floor on standard plans (reviews disagree on whether terms are annual or month-to-month); Grow and Reclaim reported from ~$300/mo. Its self-serve option lists $0.15 per contact with no monthly fee. Cost scales with your unique monthly visitors.

The gotcha

You pay per email to cold-email strangers from broker data who never opted in to you — torching your sender reputation in the US and exposing you outright under GDPR in the EU.

What users report

  • They claim ~35% match, but my actual results were 16–25%. Your mileage will vary with your traffic. — mywifequitherjob.com review
  • A case study showed a 0.18% spam-complaint rate — nearly 2x the 0.1% safe threshold. — mywifequitherjob.com review
  • Cancelling your account is almost impossible — multiple escalations, refund refused despite non-delivery. — Capterra review, 2021

Where SNAILMAIL wins

  • You only ever email people who actually opted in to your brand, so spam-complaint rates stay low and you aren't mailing anyone without consent.
  • Recognizing returning known subscribers means real engagement (the 12% vs. 3% CTR gap) instead of paying $0.25 to degrade your domain.
  • No "wrong-traffic" trap — you can't accidentally cold-email content readers, because you only act on your own opted-in identities.
SourcesMyWifeQuitHerJob — Retention.com ReviewCapterra — Retention.com (GetEmails)TrustRadius — Retention.com Pricing

Customers.ai

Visitor-ID

Identity resolution + remarketing — turn anonymous visitors into ad audiences.

How they bill

No longer public — the pricing page says "Talk to Sales" and that the price is based on your total Klaviyo profiles. Earlier published tiers ran ~$600/mo for 3,000 resolutions up to ~$1,500 for 10,000, with $0.15–$0.20 per-contact overages.

The gotcha

Marketed accuracy hides a 5–30% real category match rate, pricing is now quote-only, and the net-new contacts remain non-opted-in cold leads.

What users report

  • They concede most solutions only identify 5–30% of visitors correctly — the baseline match rate is low. — Vendor / review analysis, 2026
  • Transparency concerns and confusing account management, plus overage charges where costs can balloon. — Review aggregators, 2025
  • Software bugs and revisions that disrupt user workflows. — Review aggregators, 2025

Where SNAILMAIL wins

  • Customers.ai's only genuinely safe layer — matching against your own subscriber data — is exactly what first-party recognition does natively, without buying broker contacts on top.
  • No quote to negotiate: first-party recognition isn't priced per resolved stranger, so costs don't balloon as traffic grows.
  • Tying a session to your own customer record is deterministic — no "True Match Rate" probabilistic guessing required.
SourcesCustomers.ai — Pricingprospeo — Customers.ai Pricing & ReviewsSalesRobot — Customers.ai Review

Opensend

Visitor-ID

Identify every engaged visitor (a 180M+ US-shopper data co-op).

How they bill

$500/mo for about 2,000 identified emails ($0.25 each) → $1,000/mo at $0.23 → $2,000/mo at $0.21, with lower rates on annual billing. Trial available. Claims a 73% US-shopper match rate.

The gotcha

The whole pitch rests on co-op "partner-marketing consent," yet a teardown from a competing vendor claims the data is up to 70–95% wrong and overwhelmingly personal Gmail — paying per email to mail cold strangers who never knew your brand.

What users report

  • A lot of cold leads filter in through Opensend; if you're not careful it can begin to hurt your deliverability. — Comparison teardown, 2026 (treat as directional)
  • 99% of the contacts are Gmail and personal emails — not work emails. — Comparison teardown, 2026
  • Pricing can feel high as your traffic and leads grow. — Capterra / GetApp, 2026

Where SNAILMAIL wins

  • Consent is given directly to your brand — no reliance on a publisher co-op's "partner-marketing consent" fig leaf.
  • Deterministic matching against records you already own avoids the data-quality questions that come with co-op matches.
  • No per-delivered-email charge on contacts that bounce or complain — you're not billed to damage your own deliverability.
SourcesOpensend — site / FAQCapterra — OpensendGobot — Identity Pixel vs Opensend
First-party, not data-broker

We recognize your visitors. We don't unmask strangers.

The visitor-ID crowd reveals anonymous traffic by matching it against a licensed data co-op, then cold-emails the result. SNAILMAIL refuses that trade — and the legal and deliverability risk that comes with it.

What SNAILMAIL does

  • Recognizes your own returning subscribers by your own cookie
  • Ties sessions to customer records you already own
  • Captures opt-ins aggressively — but only on your site
  • Deterministic matches, with consent given to your brand

What the de-anon tools do

  • Buying broker / identity-graph data to reveal strangers
  • Cold-emailing people who never opted in to you
  • Risking CAN-SPAM, GDPR, and TCPA exposure for a match rate
  • Torching your domain reputation with 0.1%+ spam complaints

For context: a documented Retention.com case study hit a 0.18% spam-complaint rate — nearly 2× the 0.1% danger line — and broker-sourced emails showed 3% click-through vs. 12% for opted-in subscribers. Reviewers question whether the model is lawful in Europe under GDPR. We don't play there.

The anti-SaaS belief

Stop renting your own business back from your software.

The SaaS playbook is simple: meter everything, price it by headcount instead of value, make leaving painful, and raise the rent once you're locked in. Your list, your data, your customers — all of it held on someone else's terms.

SNAILMAIL is built the other way.

Own, don't rent

Your profiles, events, and sending domain live in infrastructure you control. Cancel anytime and walk away with everything.

Priced like infrastructure

Pay for emails sent — about $0.10 per 1,000 on your own SES — not for the size of a list you already own.

No lock-in, ever

Full exports, open formats, no leased numbers, no annual contracts. The door is always unlocked.

Your data isn't the product

First-party only. We never sell, broker, or “enrich” your customers against a third-party data co-op.

Own your list. Own your stack. Own your future.

How it works

From your list to your first send.

No data co-op, no per-seat sales motion — just your data, your channels, your sends.

01

Bring your list

Import your subscribers, events, and consent. From day one the data lives in your own database — fully exportable, never held hostage.

02

Connect your channels

Plug in your own Amazon SES for email and Twilio for SMS. Your domain, your reputation, your transparent per-send cost.

03

Build flows & campaigns

Welcome, abandoned cart, post-purchase, win-back — plus one-off broadcasts, segmented on the events you already capture.

04

Send & own everything

Pay for what you send, not who you store. Export anytime. Nothing locked behind a contract or a per-subscriber tier.

What you get

Marketing software that bills like infrastructure.

In development. Here's the shape of it.

Pay for sends, not subscribers

Flat ~$0.10 per 1,000 emails on your own SES. Inactive contacts cost effectively nothing — no per-profile tax, no tier cliffs, no bill that climbs while revenue doesn't.

You own the data

Profiles, events, and consent live in your own database with full export. No lock-in, no account rep gatekeeping your list, no leased numbers to forfeit on exit.

Your domain, your reputation

Send from your own domain with your own DKIM/DMARC, so the domain reputation you build is yours and goes where you go. SES uses shared IPs by default; dedicated IPs are an optional AWS add-on at about $25/mo each.

First-party visitor recognition

Recognize returning known subscribers by your own cookie and tie sessions to your own customer records — deterministic, with no broker data and no cold email to strangers. Cookie consent, where the law requires it, stays in your hands.

Campaigns & flows

Broadcasts plus triggered automations — welcome, abandoned cart, post-purchase, win-back — segmented on the events you already capture.

Bring your own everything

Wire your own SES and SMS provider at transparent per-unit rates. Connects to Shopify and the stack you already run.

Pricing

Pricing that bills like infrastructure.

No per-subscriber tax. Your cost tracks what you send — not the size of a list you already own.

While in beta

Free

Early access will be free while we build. Bring your list, wire up your SES, and help shape it.

At launch

$49/mo + your sends

A flat $49/mo platform fee, plus your own SES / SMS bill for what you actually send — priced like infrastructure, never per subscriber.

What you'll never pay

  • Per-subscriber or per-profile fees
  • Charges for inactive or unsubscribed contacts
  • Annual contracts or minimums
  • Overage surprises or renewal hikes

Planned pricing — subject to change while SNAILMAIL is in development.

FAQ

The questions you're already asking.

Is SNAILMAIL live yet?+

Not yet — it's in active development at GRIT Logic Labs. The demo is the real console running on sample data: you can click through campaigns, profiles, segments, sending domains, and costs, but nothing in it sends real email. Join the waitlist and we'll bring you in as we open it up.

How is sending actually cheaper?+

You send through your own Amazon SES at roughly $0.10 per 1,000 emails, flat. There's no per-subscriber fee, so your cost tracks what you send — not how big your list is. Sending to a full 100k list costs about $10 in SES fees, and contacts you don't send to cost nothing — instead of $1,380/mo just to store them. SNAILMAIL's flat platform fee, planned at $49/mo, comes on top.

Is identifying visitors legal?+

SNAILMAIL is first-party only: it recognizes your own returning subscribers and ties sessions to your own customer records. It never buys broker or identity-graph data to email people who never opted in, so it avoids the CAN-SPAM / GDPR cold-email exposure the de-anonymization tools carry. You still need cookie consent where the law requires it (the EU and UK, for example), and none of this is legal advice.

What about deliverability without managed warmup?+

You send from your own domain with your own DKIM/DMARC, so the reputation you build belongs to you. Amazon SES sends from shared IPs by default, which suits most senders; if you want your own, dedicated IPs are an AWS add-on at about $25/mo each. A warmup ramp and reputation tooling are part of the plan.

Why not Sendy, MailBluster, or Shopify Email?+

They're the closest alternatives, and for a small list Shopify Email's free 10,000 emails a month is hard to beat. The difference is what sits on top of the sending. Sendy is software you host and maintain yourself; MailBluster adds a per-email fee on top of your provider's; Shopify Email costs about ten times SES at volume and lives inside Shopify. SNAILMAIL is planned as a hosted product built around store events, flows, SMS, and first-party visitor recognition, with your data in your own database.

What does SMS cost?+

SMS runs through your own Twilio account at Twilio's published rates — in the US, a little under a cent per message segment plus carrier fees. US sending also needs A2P 10DLC registration, which you complete in Twilio. You pay Twilio directly; SMS isn't covered by the $0.10 per 1,000 email figure.

Can I migrate off Klaviyo?+

That's the design. Export your profiles, events, and consent and bring them into your own database — no leased numbers and no contracts to unwind.

Who's behind it?+

GRIT Logic — the operational-intelligence company behind ShippingOS. SNAILMAIL is a GRIT Logic Labs product, currently in development.

Built by GRIT Logic Labs— the operational-intelligence team behind ShippingOS. SNAILMAIL is in development; the demo shows where it's headed.

Meet GRIT Logic

Stop paying rent on your own list.

SNAILMAIL is in development at GRIT Logic Labs. Join the waitlist and we'll bring you in early.

No spam — a confirmation now, then one email when it's ready. Explore the GRIT Logic suite →