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Connect MailerCheck

1 auth method · updated 2026-09-10

MailerCheck verifies individual email addresses and email lists, reports verification results, and tracks account credit balances.

www.mailercheck.com/ ↗

API key

Uses your own credential — Verslay stores it encrypted

Connectable today
  1. 1
    Sign in to MailerCheck
    Open https://www.mailercheck.com/ and sign in to the account you want to connect.
  2. 2
    Create the API key
    Generate a new API key from the API or developer settings in your MailerCheck dashboard.
  3. 3
    Copy it immediately
    MailerCheck usually shows the full API key only once, right after you create it. Store it somewhere safe before closing the page.
  4. 4
    Connect in Verslay
    In the Verslay Hub, open Connections, find MailerCheck, and paste the API key into the API Token field.
  5. 5
    Verify
    The connection flips to Connected. Run any read-only action once to confirm the credential has the right scopes.
  6. 6
    Rotate safely
    When you rotate later: connect the new credential first, confirm it works, then revoke the old one.

What you’ll paste into Verslay

API Token

In MailerCheck, click your profile picture, select API, then click Create token. Copy or download the token before closing the dialog because MailerCheck only shows it once.

required · secret
MailerCheck website ↗

Connect MailerCheck once — every agent can use it

Verslay agents share your connections. Connect MailerCheck in the Hub and every use-case that needs it lights up — no per-agent setup.

Open the Hub →
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