POST/v1/email/messages
Sandbox"to": [ "bounce@messagebird.dev" ]
202Accepted
event.typeemail.bounced
POST/v1/email/messages
Sandbox"to": [ "bounce@messagebird.dev" ]
202Accepted
event.typeemail.bounced
Transactional email.
Deliver password resets, magic links, order confirmations, and shipping alerts to the inbox right when customers trigger them. Integrate with the REST API, SDKs, Bird MCP, or your existing SMTP setup, keep critical messages separate from marketing blasts, and track delivery in real time.
Trusted by engineering and product teams
shipping at global scale.
From prompt to delivered.
Send email from your app or agent. Follow it through delivery. Full read and write access through MCP and CLI.
Trigger receipts and password resets
the moment a user acts.
When a customer requests a login link, completes a checkout, or waits on a shipment, they check their inbox right away. Trigger password resets, receipts, billing notices, and shipping alerts from your backend without getting queued behind marketing blasts or sending duplicate emails when a request retries. Compare published email pricing and the best email APIs for your sending volume.
Personalize reusable templates
with live order details.
Publish reusable templates in Bird so product and design teams can update copy, branding, or layout without waiting on a backend deploy. Pass the customer’s name, order summary, and action links at send time, or render HTML directly in your codebase with React Email.
Ready to build?
Your domain.
Your reputation.
Verify your domain and separate transactional and marketing traffic to protect your sender reputation. Bird automatically suppresses addresses after a hard bounce.
Catch integration issues early and ship with confidence.
Simulate failure paths in the sandbox, verify signed webhooks, and retry timed-out requests without sending duplicates.
Trace every transactional email
from send to inbox delivery.
When a customer says their login code or receipt did not arrive, look up their address in the email log to see the full delivery timeline in seconds. Inspect receiving-server acceptance, temporary deferrals, and exact bounce reasons, and stream status updates back to your app with signed webhooks.
Transactional email, explained.
What is a transactional email service?
A transactional email service delivers one-to-one messages triggered by a user action, such as password resets, magic links, order receipts, shipping alerts, and billing notifications. Your application triggers the send when an event happens, and Bird handles domain authentication, inbox delivery, bounce suppression, and real-time status tracking. Audience broadcasts and promotional newsletters belong in Email marketing.
Should I send transactional email with SMTP or the Email API?
Use SMTP to connect an existing application or framework mailer by swapping credentials without rewriting your sending code. Use the Email API when you want to populate published templates with dynamic data, prevent duplicate sends on network retries, and build with Bird’s SDKs, CLI, or MCP. Both share the same verified domains, suppression lists, webhooks, and delivery logs.
Does a delivered transactional email mean it reached the inbox?
A delivered status confirms that the recipient’s mail server accepted the message, though the mailbox provider still decides whether to place it in the primary inbox, promotions tab, or spam folder. Pair delivery logs with domain authentication and Inbox Insights to monitor inbox versus spam placement across major mailbox providers.
Scale without losing control.
Separate production and sandbox traffic into dedicated workspaces, scope API keys to the exact channels each service or agent needs, and track permission changes in the audit log.
Go further.
With Email.
Transactional sending, marketing campaigns, and deliverability tools in one place.
Transactional email
Deliver password resets, receipts, and account alerts that arrive on time.
Email marketing
Send newsletters, product updates, and promotions to your audiences.
Email API
Send, receive, and track email from one platform.
Email automation
Trigger onboarding sequences and follow-ups when customers take action.
Email templates
Build with React Email or publish templates your team can edit anytime.
Contacts & audiences
Group contacts by profile data and keep opt-in preferences in sync.
SMTP relay
Send through Bird from your existing app or mail server by swapping credentials.
Inbound email
Route customer replies and attachments directly into your app or workflows.
Email deliverability
Verify domains, warm up dedicated IPs, and protect your sender reputation.
Email analytics
Track delivery rates, opens, clicks, and the exact reasons behind bounces.
Inbox Insights
See where your emails land across Gmail, Outlook, and Yahoo before sending.
Competitive Insights
Monitor how often competitors send and what subject lines they use.
Start with one channel and expand as you grow.
Add new channels, verification, and connectivity in the same workspace, using the same API keys, webhooks, and SDKs.
Deliver transactional emails, run campaigns, and handle replies.
SMS
Send global text alerts, campaigns, and two-way replies.
Send approved templates, rich media, and two-way support chats.
Apple Messages
Support customers, schedule appointments, and take Apple Pay in Messages.
Voice
Place programmable calls, run IVR menus, and connect SIP trunks.
Verify
Confirm signups and logins with OTPs and automatic channel fallback.
Lookup
Validate phone numbers and emails before you pay to send.
Mailbox
Provision dedicated email inboxes for AI agents and workflows.
eSIM
Issue travel data plans and mobile connectivity in your app.
Realtime
Stream live updates, chat, and presence over managed WebSockets.