mailbridgeAPI
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BUILT FOR PEOPLE. READY FOR AI.

Email API knowledge base.

Search MailBridgeAPI product knowledge, explore the API reference, or give your assistant structured documentation with clear sources.

Browse email API guides

Start with these guides to mailbox setup, API authentication and practical integrations.

Connect a mailbox and make your first API request

What you’ll need A mailbox you are authorized to connect SMTP host, port, username, and credentials IMAP host, port, username, and credentials Provider-approved authentication and access settings Connect your mailbox Add your SMTP and IMAP

Integrate the mailbox. Keep its password out of the project.

Your client or mailbox owner connects the email account in MailBridgeAPI. You build the integration with API keys, without needing to know their mailbox password. Mailbox owner Enters SMTP / IMAP credentials in MailBridgeAPI. Uses the confi

Plans, prices, free trial and limits

All the core tools to connect your mailbox to your application. No per-request pricing to calculate. Billed monthly. $9 USD per month. $90 USD billed annually. Equivalent to $7.50 per month. Two months free compared with monthly billing. 3-

Authentication

Requests require two values: apikey identifies your account; apikeybox selects a configured mailbox. Examples use the documented request parameters. Keep keys in server-side environment variables. For GET endpoints, query parameters can app

Send from your own address

Send transactional emails and notifications through your connected SMTP mailbox. Your provider and sender identity stay with you. HTML or plain text messages Custom sender and reply-to names CC recipients and base64 attachments POST /sendem

Bring your inbox into your app

Retrieve incoming messages from your IMAP folders. Turn customer requests, alerts, and replies into useful application data. Select an IMAP folder Retrieve up to 30 messages per page Work with a JSON response GET /getemail

Build for clients without asking for their email password.

AGENCIES & FREELANCERS Connect a client’s mailbox to their website or application using API keys. The client handles the mailbox credentials. Scenario: A client wants their website to send enquiry acknowledgements from contact@theircompany.

Put email conversations where your team works.

CUSTOMER SUPPORT Read customer messages inside your support tool and send replies from your existing support address. Scenario: Your team switches between a shared inbox and an internal support application to handle the same customer reques

Send invoices from the address customers recognize.

FINANCE & OPERATIONS Deliver invoices, payment instructions, and follow-ups from your accounting workflow. Scenario: An invoice is ready in your internal system. Someone still downloads the PDF, opens an email client, and attaches it by han

Turn incoming emails into useful input for your AI tools.

AI-ASSISTED WORK Build email classification, request summaries, and reply drafts around a connected mailbox. Scenario: Your team receives repetitive enquiries and wants help identifying the topic and preparing a first draft. 1. Your backend

Keep your contact lists in sync

Enable unsubscribe links for your mailings and retrieve opt-out records through the API to update your own contact lists. Optional unsubscribe footer Recipient-specific opt-out links Retrieve unsubscribe records by mailbox GET /email/unsubs

Make email part of your workflow

Connect API requests to your business logic. Build automated responses, data extraction, or AI-assisted workflows around your existing mailbox. Integrate from any HTTP-capable tool Connect your own AI workflows Keep control of when messages

Bring the documentation to your assistant.

Choose the format your workflow needs. These resources are generated from the same public content as this website.

Current answers start with current sources.

An assistant connected to the knowledge API can retrieve the latest published articles when it answers. A downloaded file is a snapshot: import it again after updates.

These resources do not automatically train ChatGPT or connect an existing assistant. Your assistant needs to be configured to use them.

Product knowledge. No private mailbox access.

This knowledge API only searches public documentation. It does not require your email API keys and cannot read messages or send emails.

Open the email API documentation