Warm up any mailbox you send from
MailPilot connects to Gmail and Outlook with one-click OAuth, to SendGrid, Amazon SES, Mailgun, Postmark and any custom SMTP server over SMTP/IMAP, and runs alongside Smartlead, Instantly, Lemlist and Apollo. Pick your provider and warm up with real inbox-placement monitoring.
Start free — no credit card →Email providers
Connect Gmail, Google Workspace, Outlook, or Microsoft 365 with one-click OAuth — no app passwords, no SMTP fiddling.
One-click Google OAuth. Warm up personal Gmail inboxes with read/send scopes only.
Gmail warmup guide →Warm up custom-domain Workspace mailboxes and build shared-domain reputation.
Google Workspace warmup guide →Connect Outlook.com and Hotmail via Microsoft OAuth for Outlook-network warmup.
Outlook warmup guide →Warm up Microsoft 365 business mailboxes with modern-auth OAuth, no basic auth.
Microsoft 365 warmup guide →ESPs & SMTP
Send through SendGrid, Amazon SES, Mailgun, Postmark, or any custom SMTP server. MailPilot connects over SMTP for sending and IMAP for reply detection.
Warm up your SendGrid sending domain and IP so campaigns land in the inbox.
SendGrid warmup guide →Warm up SES dedicated IPs and domains before you scale bulk sending.
Amazon SES warmup guide →Build Mailgun domain and IP reputation with steady, human-like warmup traffic.
Mailgun warmup guide →Warm up a Postmark broadcast stream so cold outreach avoids the spam folder.
Postmark warmup guide →Connect any provider with SMTP + IMAP credentials — Zoho, Fastmail, cPanel, and more.
Custom SMTP warmup guide →Sending tools & automation
MailPilot is a standalone warmup layer — it runs alongside your sequencer or CRM. Warm the mailbox in MailPilot, send campaigns wherever you already do.
Warm up in MailPilot, sequence in Smartlead — no double-warmup conflicts.
Smartlead warmup guide →Use MailPilot placement data alongside Instantly campaigns for real inbox visibility.
Instantly warmup guide →A standalone warmup alternative to Lemwarm that works with any Lemlist plan.
Lemlist warmup guide →Warm up the same mailboxes you send Apollo sequences from — no plugin needed.
Apollo warmup guide →Trigger workflows on warmup and placement events across 6,000+ Zapier apps.
Zapier warmup guide →Connect your first mailbox in minutes
Free plan available. 14-day trial on paid plans, from $9/mo. No credit card. Works with the tools you already send from.