Email list verification and deliverability checks. Your client pastes their Mailercheck key once, and your agent or your code works with their access.
CRM and sales
About Mailercheck
Through Operate As, your agent, n8n workflow or code works in Mailercheck with your client's own access. Your client pastes their API Key from Mailercheck once. We store it encrypted, so it never sits in an email or a shared doc. Your agent reaches any endpoint of Mailercheck's API through the request tool, with the client's access attached.
Common uses in CRM and sales
Add new leads from forms, emails and calls
Move deals along and log activity after each conversation
Keep contact records clean and complete
Mailercheck
Mailercheck · CRM and sales
API key
Email list verification and deliverability checks
The client pastes their API Key from Mailercheck's settings. We store it encrypted.
Tested against Mailercheck's live API.
Building with Mailercheck? The docs have setup steps and code for every tool.
Add a client, select the services, copy the link. You'll get an email the moment their access is ready. Start free, no card required. Paid plans are one flat monthly price, and a busy month never takes your agents offline.