Your 
Mailcheck always
one message away
Verify email addresses and check deliverability in Mailcheck from WhatsApp, Telegram, Slack, or iMessage, by voice or text.
Mailchimp
Mailcheck
Six ways to run it from a message.
Drive it by message when you need it, or put it on autopilot.
Verify any email
Share an email address in any message; Notis checks its deliverability instantly and reports the status.
Re-verify addresses
Ask Notis to re-check the deliverability status of emails you've verified before; get instant updates.
Check email validity
Ask 'Are these addresses valid?' or 'Which emails bounce?'; Notis queries Mailcheck and replies with status.
Verification summaries
Receive daily or weekly reports of emails you've verified, their deliverability status, and any bounces.
Scheduled email checks
Set Notis to run verification batches on your calendar; it monitors your email list health automatically.
Connect to email tools
Link Mailcheck to your CRM or email marketing platform; Notis syncs verified addresses and keeps lists clean.
Mailcheck, from anywhere you
message.
Pick the channel you already live in. Notis turns it into a fully native Mailcheck remote.
Telegram
Voice-first Mailcheck bot. Record, tag, file.
WhatsApp business or personal, both work.
Slack
Slash-command your way through any workspace.
iMessage
Native bubbles. iPhone, iPad and Mac.
Gmail
Forward emails. Get them filed in Mailcheck.
Notis Desktop
Run from Notis desktop with hotkeys & history.
What people automate with
Mailcheck + Notis.
Verify an email address from a private GitHub request
When a labeled issue in a private repository requests an email check and includes the exact address, verify it with Mailcheck and report the result.
Verify emails on new lead records
Check the email on each new Notion lead record with Mailcheck so you can prioritize follow-up with better deliverability information.
Check launch contact emails
Verify each contact email included in a Plasmic launch payload before you rely on it for an announcement.
Review this week's Plasmic leads
On a weekly schedule, verify lead email addresses gathered through your Plasmic-powered pages so follow-up starts with a check.
Check prospect emails on page creation
When you create a Notion prospect page with an email address, have Mailcheck verify it as part of your prospecting workflow.
Check form submission addresses
Verify an email supplied in a Plasmic form submission as soon as your backend sends the submission to Notis.
Supported triggers and
actions
Notis builds workflows that link this app to anything else. A trigger fires from one place; an action lands in another.
Recurring trigger
Notis starts this workflow on a schedule, such as daily, weekly, or during business hours.
Webhook trigger
Notis starts this workflow when an external tool or custom backend sends an HTTP request.
Connect any two apps
with AI in the middle.
Choose the app that starts the workflow and the app that should react. Notis sits in between, reading each event, deciding what matters, and writing the result exactly where it belongs.
When this happens · Trigger
Do this · Action
Popular pairs
Connect Mailcheck to
1,000+ integrations in one click.
Start with a managed app, then go beyond the catalog with any MCP server, any CLI tool, or one of 1,400+ tools and APIs you never sign up for at all. Notis uses all of them from the same conversation.
1,000+ managed integrations
Choose a supported app and connect it in one click. Notis handles access and makes its actions available to every agent.
Browse integrationsCustom MCP servers
Bring any remote or local Model Context Protocol server. Its tools become available to Notis like any managed integration.
Set up a custom MCPCLI tools
Use any Linux command line on your Cloud Computer. Notis can install it, run it, and bring the result back to your conversation.
Install a CLI tool1,400+ Pay-per-use tools
Semrush, Apollo, People Data Labs, Apify and the rest of 1,400+ tools are already wired in. No account, no API key, no subscription. Just ask. Licensing that stack costs $20,000+/year; on any paid plan every call comes out of the usage already included in your plan.
Browse Pay-per-use toolsStart saving time today.
Connect in 60 seconds. No DIY, no maintenance, no setup tax.