One platform replaces 20 email tools and the per-subscriber bill that comes with them..
Send unlimited campaigns through your own Amazon SES, SendGrid, Mailgun or any of 14 sending providers. Build 8-trigger automations, verify lists with ZeroBounce + 13 more, write with AI, and white-label for clients — for a one-time price, not a Mailchimp bill that grows with your list.
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Email platforms charge you for growing then
hold your list hostage.
$3,600+ / yr at 50K contacts
The growth penalty
Mailchimp, ActiveCampaign, ConvertKit price by subscriber count. The bigger your list grows, the more they bill you — even for inactive contacts. List growth becomes a punishment, not a milestone.
$240+ / mo on stack tax
The 20-tool stack
You're paying separately for ESP, automation, list verification, AI copywriter, lead finder, transactional, and tracking. Twenty subscriptions, twenty logins, twenty contracts — for one job.
One ban = list gone
The infrastructure lock-in
Your sender reputation lives on someone else's IPs. One overzealous abuse review, one false flag, and your account is suspended — your list, your domain warm-up, your business — overnight.
$3.99 /month
No hidden fees. Cancel anytime.
Seven things you stop paying for separately
Each one is a $30–$200/month tool you'd otherwise add to your stack. CleverlyBox does all of them in one platform for one price.
14 sending providers. Use your own never theirs.
Connect Amazon SES at $0.10 per 1,000 emails. Or SendGrid, Mailgun, ElasticEmail, SparkPost, Brevo, BlastEngine, Postal, or any SMTP server. Rotate between them. Run a backup pool. Manage SendGrid sub-accounts for clients. The ESPs that charge you $20/1000 emails want you locked in. CleverlyBox makes you the operator.
- API + SMTP variants for every major provider pick whichever your provider documents best
- SPF, DKIM, custom Return-Path, and tracking-domain wiring — built into the UI
- IP warm-up webhook hooks, FBL handlers, bounce processors — all included, no extra tools
Visual workflows with 8 real-world triggers
Welcome new subscribers. Win back lapsed ones. Wish them happy birthday. Fire on a specific date, an API webhook, or a recurring weekly / monthly schedule. Branch on subscriber data, wait, evaluate, then send drag-and-drop, no code, no extra Zapier subscription.
- 8 trigger types: Welcome, Goodbye, Birthday, Anniversary, Specific Date, API webhook, Weekly, Monthly
- 4 action types: Send email, Wait, Evaluate (conditional branch), Operate (modify subscriber data)
- Multi-path conditional flows — different sequences for different segments, all from one canvas
Drag-drop builder with GPT writing your subject lines
Headline, body, image, button, divider, YouTube embed, audio block — drag, drop, ship. When the words won't come, hand it to the built-in OpenAI copywriter. Need 50 variations of a subject line for split-testing? Spintax handles it. No Jasper, no Copy.ai, no separate $49/mo subscription.
- PRO drag-and-drop email builder + TinyMCE rich-text + raw HTML/CSS — pick your level
- OpenAI GPT integration writes subject lines, body copy, and full variations on demand
- Spintax content variation per send improves inbox placement and beats spam-pattern detection
Built-in list verification across 14 providers
ZeroBounce, Emailable, Kickbox, Bouncify, Debounce, Flaxxa Mail Cleaner, NeverBounce-style — pick your provider, plug your key, verify on import or via automation. No more $50–$200/month verification subscriptions running on a separate dashboard.
- 14 verification services baked into the platform — switch providers without changing platforms
- Verify on import, on automation step, or on-demand for an entire list — your call
- Catches typos, role accounts, disposables, and dead inboxes before they hit your sender reputation
Conditional segments with AND/OR logic. Send to the right people
Build segments from any subscriber field, custom field, engagement signal, or status — chained with AND/OR logic. Re-engage subscribers who opened campaign 3 but didn't click. Target buyers from one country who haven't purchased in 60 days. Run it dynamic — the segment recalculates every send.
- Multi-condition rules: opened/clicked/bounced × custom field × tag × geographic × date range
- Saved as reusable segment objects — pick from a dropdown on every campaign
- Dynamic by default — no manual list refresh, no stale audiences
White-label sub-accounts. Resell as your own ESP
Spin up sub-accounts for unlimited clients. Quotas per client. Custom branding — logo, theme, colors, footer. SendGrid sub-account isolation. Granular permission control for each team member. Build a recurring email-marketing service business under your own brand, on infrastructure you control
- Sub-customer accounts with configurable quotas (subscribers, sends, domains, automations)
- Custom branding per agency — logo light/dark, theme colors, plan-based email footer
- SendGrid sub-account integration — isolate client sender reputations from each other
Lead Finder + drag-drop forms. Grow lists without leaving the dashboard
Built-in lead finder with Flaxxa integration search by domain or persona, get verified emails, push directly to a list. Build subscription forms with the same drag-drop builder you use for emails. Embed on your site with one JavaScript snippet. CAPTCHA, double opt-in, welcome email — all native.
- Lead Finder domain-to-email prospecting + verification before push to list
- Drag-drop forms with templates, custom fields, CAPTCHA, double opt-in, welcome/goodbye emails
- Embed via JavaScript snippet, iframe, or popup widget — no developer needed
See how CleverlyBox compares
Get lifetime access, built-in AI tools, email verification, lead finder, and more without paying per-subscriber fees forever.
| Cost / capability | CleverlyBox BEST | Mailchimp | ActiveCampaign | ConvertKit |
|---|---|---|---|---|
| Pricing model | Lifetime $49 + your SES bill | Per-subscriber, monthly | Per-subscriber, monthly | Per-subscriber, monthly |
| Year 1 cost (50K subs) | ~$649 (incl. $50/mo SES) | ~$3,600 | ~$2,748 | ~$3,108 |
| 5-year cost | ~$3,049 | ~$18,000+ | ~$13,740+ | ~$15,540+ |
| Sending providers | 14 (SES, SendGrid, Mailgun, +) | Their servers only | Their servers only | Their servers only |
| Email verification | 14 providers built-in | Not included | Add-on | Not included |
| AI copywriting | GPT built-in | Limited (paid plan) | Limited | Not included |
| Lead finder | Built-in | |||
| White-label sub-accounts | Unlimited | Agency tier only | ||
| Spintax content variation | ||||
| Per-subscriber tax | None | Yes — scales forever | Yes | Yes |
| Account suspension risk | Your infra, your control | Their call | Their call | Their call |
Bring your own providers. CleverlyBox already speaks all of them.
14 sending integrations and 14 verification services — wired and waiting.
Pick what your bank account likes best.
Sending Providers
Verification Services
OEV (My-Addr)
Six teams already running on CleverlyBox
Every customer profile below ships with a tailored playbook — sending setup, automation templates, verification flows, segment recipes.
Email marketers + newsletter publishers
Replace Mailchimp / ConvertKit / ActiveCampaign. Send to 50K, 100K, 500K subscribers without watching your bill compound.
See playbookE-commerce store owners
Cart abandonment, post-purchase, win-back, product launches. Triggered flows that recover revenue without paying Klaviyo $300+/month.
See playbookDigital agencies + resellers
Resell email marketing under your own brand. Sub-accounts for clients, custom logo, recurring revenue. Build the next $1M agency arm.
See playbookSaaS companies
Onboarding, transactional, marketing — all from one platform. Stop paying Mailgun for one and Mailchimp for the other.
See playbookCold email + lead-gen
SMTP rotation, spintax, verification, lead finder. The volume-sender stack — minus the seven separate subscriptions.
See playbookEnterprise
Own infrastructure, custom domains, IP warmup, compliance controls, audit trails. Email at the scale your CISO will actually approve.
See playbook"My Mailchimp bill was killing me. Now my SES bill barely registers."
"I migrated 84K subscribers off Mailchimp in a weekend. Year-1 savings paid for the next decade. The SendGrid sub-account thing alone is worth the whole price."
"We're a 6-client agency. CleverlyBox sub-accounts replaced 6 separate ESP logins. Recurring email-marketing revenue went from a side line to our biggest service."
"Cold-email stack used to be Instantly + ZeroBounce + Lemlist + a CRM. Now it's CleverlyBox. I still don't believe what I'm not paying every month."
Operator quotes sourced from launch-cohort feedback. Real names, recomposed for privacy.
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— Priya S.
Use it for 30 days. If your stack isn't smaller and your bill isn't lower, full refund.
One email to support. No survey. No "save offer" loop. No pro-rating math. Either CleverlyBox earns its place in your stack, or you get every dollar back. We make this offer because it's the only one that's fair when you're asking someone to migrate a list.