Integration guides

Connect your mailbox.
We’ll walk you through it.

Choose your email provider for the credentials you need, the settings to enter, and step-by-step setup instructions.

Explore setup now. Live connections are not enabled yet. These guides explain the available connection paths and provider requirements; named SMTP providers have not been individually connection-tested.

11 setup guides · No sign-in needed to read

Mailbox providers

Use the service that hosts your email, including a custom work domain.

Google App Password

Gmail & Google Workspace

Prepare an App Password for your Gmail or Google Workspace mailbox. Server settings are filled in for you.

Read setup guide
Microsoft sign-in

Outlook, Hotmail & Microsoft 365

Connect Outlook.com, Hotmail or Microsoft 365 email with Microsoft sign-in. No mailbox password or SMTP server details to paste into MailboxWarm.

Read setup guide
SMTP · password or App Password

Zoho Mail

Find the correct Zoho server for your account and data center, then use MailboxWarm’s SMTP connection.

Read setup guide
SMTP · App Password

Yahoo Mail

Generate a Yahoo app password and enter Yahoo’s outgoing mail settings.

Read setup guide
SMTP · App Password

Fastmail

Use a Fastmail app password with mail access and the standard SMTP server.

Read setup guide
SMTP · paid plan + custom domain

Proton Mail

Use Proton’s hosted SMTP with a paid Mail plan, a custom-domain address, and a dedicated SMTP token.

Read setup guide
SMTP · app-specific password

iCloud Mail

Connect your iCloud Mail address using Apple’s outgoing mail server and an app-specific password.

Read setup guide

SMTP platforms

Use an authorized sending address and your platform’s SMTP credentials.

SMTP · API key as password

SendGrid

Use SendGrid’s SMTP relay with a verified sender and a Mail Send API key.

Read setup guide
SMTP · domain credentials

Mailgun

Choose the SMTP credentials and regional endpoint for your Mailgun sending domain.

Read setup guide
SMTP · regional credentials

Amazon SES

Use an SES SMTP endpoint, matching regional credentials, and a verified sending identity.

Read setup guide
Authenticated SMTP over TLS

Other SMTP providers

Connect another hosted mailbox or sending server using the settings supplied by your provider.

Read setup guide

Not sure who hosts your email?

Check your email account settings or ask your administrator. The company that sold your domain may not host your mailbox.

Ask for setup help