Integrations
Smartlead, Instantly, Lemlist, Apollo, Outreach. Plus custom webhook.
Connect Smartlead to your Inboxlee mailboxes
API key method (recommended) and CSV export fallback. Complete guide.
4 min read·Updated Apr 22, 2026
Connect Instantly
One-click sync with Instantly. Sending limits auto-configured.
3 min read·Updated Apr 18, 2026
Connect Lemlist
API key method and CSV fallback for Lemlist users.
3 min read·Updated Apr 15, 2026
Connect Apollo email
OAuth path and SMTP credential path for Apollo users.
3 min read·Updated Apr 12, 2026
Custom webhook events
Subscribe any tool to Inboxlee mailbox lifecycle events.
4 min read·Updated Apr 8, 2026