The full loop
From signup to paid, in one tool
Capture a lead, check the address, learn who they are, nurture them, hear the moment they're ready, book the call, send the proposal, take the payment and deliver what they bought. Every step runs in MailInApp, and most of them happen right inside an email.
Step by step
Every step is a real part of the product
01 · Capture
Grow the list with people who asked
Signup forms and landing pages collect new contacts, and a poll or quiz in the welcome email gives them a reason to answer. Lists from other tools come in through a CSV import that recognizes Apollo, Clay and HubSpot exports.
- Signup forms
- Landing pages
- Quiz & poll blocks
- Apollo, Clay & HubSpot import presets
- Shopify & WooCommerce sync
02 · Verify
Check every address before it costs you
Every address is checked on the way in, from any source, free on every plan. Invalid addresses are never sent to, and a campaign to a list with too many bad ones waits until you clean it or approve it. Imports also ask how the contacts agreed to hear from you, and purchased lists stay out of marketing sends.
- Free address check
- Send-time list check
- Consent at import
- Your own ZeroBounce or NeverBounce key
03 · Enrich
Learn who they are from what they tell you
A poll vote, quiz score or form answer can be saved straight onto the contact who gave it. Company details are filled in from the work email's domain, with 100 lookups a month on the free plan. For more, connect your own Apollo, Hunter or People Data Labs account. Enrichment only fills in contacts you already have. It never finds new people.
- Save answer to contact field
- Company details
- Engagement score
- Your own Apollo, Hunter or PDL key
04 · Nurture
Journeys that ask, listen and branch
A journey can send a real interactive email at any step and branch on the answer. Describe one in plain words and the AI copilot builds the flow and writes its emails, then leaves it paused until you switch it on.
- Journeys
- Segments
- Starter journeys
- AI journey copilot
05 · Alert
Know the minute a lead turns hot
When a contact fills in a form, subscribes, or their engagement score crosses your threshold, you get a push notification, an email or a Slack message that opens their profile. A Notify me step puts the same alert anywhere in a journey.
- Hot-lead & new-lead alerts
- Push, email & Slack
- Notify me step
- Speed-to-lead starter
06 · Book
Booked from the email, not a scheduling page
A booking block shows your next open times right in the email. One tap books the slot on your Google Calendar, with a Meet link and a confirmation email. The time is checked again at the moment of booking, so nobody gets a slot that's already gone.
- Booking block
- Google Calendar
- Reschedule & cancel page
- Meeting booked trigger
07 · Propose
A proposal they accept from their inbox
Paste your meeting notes into the deal and the AI copilot drafts a proposal from them, in your brand voice and at the deal's value. You review it, then send it or publish it as a page. They type their name, tick a box, and the deal moves to Won.
- Draft from meeting notes
- Accept in the email
- Publish as a page
- Proposal templates
08 · Pay
Take the payment in the same email
A product block takes a card payment through your own connected Stripe account without leaving the email, and a proposal can carry a deposit the same way. Deals on the pipeline board move by themselves as meetings are booked, proposals sent and payments made.
- In-email checkout
- Proposal deposits
- Deal pipeline
- HubSpot & Pipedrive sync
09 · Deliver
Hand over what they bought
A digital product's download link or code is emailed the moment the payment clears. Courses, memberships and webinars live in a member portal that can run on your own domain, with Stripe subscriptions behind it.
- Digital delivery
- Courses & memberships
- Webinars
- Custom portal domain
10 · Automate
Connect the rest of your stack
12 account webhook events, from new leads to bookings, deals and purchases, reach Zapier, n8n or your own endpoint. A REST API and an n8n node act on contacts, deals and journeys, and AI assistants can work in your account through MCP.
- Account webhooks
- REST API
- n8n node
- Zapier
- MCP for AI assistants
Where we stop
What MailInApp deliberately doesn't do
A loop is only as good as the list going into it. These limits are on purpose, and they're what keeps your email reaching the inbox.
No contact database
We don't sell, scrape or guess email addresses. Bring leads you're allowed to email. To enrich contacts you already have, connect your own Apollo, Hunter or People Data Labs account.
No cold outreach
You can import a purchased or prospect list to track and enrich it, but campaigns, schedules and journeys skip those contacts. That protects your sender reputation and keeps you on the right side of CASL and GDPR.
A light pipeline, not a CRM
Deals, stages and values that move on real events. Tasks, forecasts and sales sequences belong in a CRM, so deals can sync one way to HubSpot or Pipedrive.
Google Calendar only, for now
Booking reads your free and busy times from Google Calendar and adds meetings there. Other calendars aren't supported yet.
AI drafts, you decide
Journeys the AI builds start paused and proposals start as drafts. Nothing is switched on or sent until you do it.
One tool or four
The same loop, without the glue
A common way to run this loop is Apollo for leads, Brevo for email, Calendly for meetings and Zapier to connect them. Here's how the steps line up.
| Step | MailInApp | Apollo + Brevo + Calendly + Zapier |
|---|---|---|
| Capture | Signup forms, landing pages and quiz lead magnets; imports with Apollo, Clay and HubSpot presets | Apollo's database to find new people; Brevo signup forms |
| Verify | Every address checked on the way in, free; bad addresses never mailed | Apollo shows an email status on its own records; other lists need a separate checker |
| Enrich | Answers saved to the contact, company details from the domain, your own Apollo key | Apollo's data, copied into Brevo by an integration or a Zap |
| Nurture | Journeys that send interactive emails and branch on the answers | Brevo automations sending static emails |
| Alert | Push, email and Slack when a lead turns hot | A Zap from a Brevo or Apollo event to Slack or email |
| Book | Open times inside the email, booked in one tap | A Calendly link to a separate booking page |
| Propose | Drafted from your notes, accepted in the inbox | Not covered: a separate document or proposal tool |
| Pay | Checkout and deposits inside the email | Calendly can take payment at booking; otherwise a payment link |
| Pipeline | Deals moved by bookings, proposals and payments | Deals in Apollo and in Brevo, kept in step by Zaps |
| Billing | One subscription, priced on what you send | Four subscriptions, each priced its own way |
- Capture
- MailInAppSignup forms, landing pages and quiz lead magnets; imports with Apollo, Clay and HubSpot presets
- Apollo + Brevo + Calendly + ZapierApollo's database to find new people; Brevo signup forms
- Verify
- MailInAppEvery address checked on the way in, free; bad addresses never mailed
- Apollo + Brevo + Calendly + ZapierApollo shows an email status on its own records; other lists need a separate checker
- Enrich
- MailInAppAnswers saved to the contact, company details from the domain, your own Apollo key
- Apollo + Brevo + Calendly + ZapierApollo's data, copied into Brevo by an integration or a Zap
- Nurture
- MailInAppJourneys that send interactive emails and branch on the answers
- Apollo + Brevo + Calendly + ZapierBrevo automations sending static emails
- Alert
- MailInAppPush, email and Slack when a lead turns hot
- Apollo + Brevo + Calendly + ZapierA Zap from a Brevo or Apollo event to Slack or email
- Book
- MailInAppOpen times inside the email, booked in one tap
- Apollo + Brevo + Calendly + ZapierA Calendly link to a separate booking page
- Propose
- MailInAppDrafted from your notes, accepted in the inbox
- Apollo + Brevo + Calendly + ZapierNot covered: a separate document or proposal tool
- Pay
- MailInAppCheckout and deposits inside the email
- Apollo + Brevo + Calendly + ZapierCalendly can take payment at booking; otherwise a payment link
- Pipeline
- MailInAppDeals moved by bookings, proposals and payments
- Apollo + Brevo + Calendly + ZapierDeals in Apollo and in Brevo, kept in step by Zaps
- Billing
- MailInAppOne subscription, priced on what you send
- Apollo + Brevo + Calendly + ZapierFour subscriptions, each priced its own way
Written in October 2026 from each product's public description. Their features change, so check them before you decide.
Read the full comparisonFAQ
Questions about the loop
Do I have to move everything to MailInApp at once?
No. Each step works on its own. Keep your CRM and sync deals to HubSpot or Pipedrive, keep Zapier or n8n and subscribe them to MailInApp's webhooks, or start with interactive emails alone.
Webhooks & eventsCan I bring in leads from Apollo or Clay?
Yes. The CSV import recognizes Apollo, Clay and HubSpot exports and keeps the useful columns. It asks how the contacts agreed to hear from you. If they came from a purchased or prospect list, you can still track and enrich them, but marketing sends skip them.
Importing leadsWhich plan do I need for the whole loop?
Capture, verification, enrichment, journeys, lead alerts and booking work on every plan, within its limits. In-email checkout, courses, published pages and AI proposals start on Lite, at $29 a month.
See plans & pricingWill the AI send anything without me?
No. Journeys the copilot builds are created paused, and proposals are drafts. Switching a journey on and sending an email are always your call.
Build journeys with AIWhat if a time slot is taken after the email goes out?
The email shows your open times as of when it was sent. When someone picks one, it's checked against your calendar again. If it's gone, they're offered fresh times instead.
Meeting bookingRun the whole loop from one account
Start free with capture, verification, journeys and booking. Add checkout, courses and proposals when you're ready.