Trusted by teams sending 50M+ emails per month

"Super happy with the results. I'm seeing a 33% reply rate with over 54% positive replies on one campaign, and 74% open rates with zero bounces"

Send through a REST API, drop in SMTP credentials, or connect the tools you already use. Most teams are sending within an hour and nothing about how you work has to change.
Trusted by teams sending 50M+ emails per month

"Super happy with the results. I'm seeing a 33% reply rate with over 54% positive replies on one campaign, and 74% open rates with zero bounces"

Monthly Emails
Inbox Rate
Redundancy layers
Assets Managed
Use Mission Inbox APIs, SDKs and webhooks to create inboxes, send email, receive replies and trigger workflows from your existing stack.
Email API
Send transactional and product email from one REST API.
SMTP support
Connect existing applications and libraries through standard SMTP.
Real-time webhooks
Receive delivery, bounce, open and click events inside your application.
Delivery logs
Inspect message activity and diagnose delivery problems without digging through server logs.
Isolated infrastructure
Keep your sending reputation separate from unrelated senders.
MI Shield
Check email content, headers and sending configuration before messages leave your infrastructure.
Keep transactional, product and automated email on clearly defined sending routes.
Avoid having unrelated senders determine the reputation behind your emails.
Follow delivery events and investigate failed or delayed messages.
Increase sending volume without replacing your applicationβs email integration.

Generate credentials for your application.
Review endpoints, authentication and request parameters.
Receive and process email delivery events.
Teams that rely on email, run on Mission Inbox. See what changed after they moved away from shared sending infrastructure.
API, SMTP or both. Same infrastructure, same protection, underneath either one.