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23 Best Email API 's for Developers in 2024

23 Best Email API 's for Developers in 2024

Reviews, comparison, screenshots and more for the 23 best email service API 's for developers.

44 Best Email API 's for Developers in 2025

44 Best Email API 's for Developers in 2025

Reviews, comparison, screenshots and more for the 44 best email service API 's for developers.

Pagination

Developer Email API for Custom Domains and Webhooks

Note As of November 1st, 2024 the API endpoints for List domains and List domain aliases will default to 1000 max results per page. If you would like to opt-in to this behavior early, you can pass ?pa...

Libraries

Developer Email API for Custom Domains and Webhooks

Right now we have not yet released any API wrappers, but we plan to do so in the near future. Send an email to api @forwardemail.net if you would like to be notified when a particular programming langu...

Create outbound SMTP email

Developer Email API for Custom Domains and Webhooks

Our API for creating an email is inspired by and leverages Nodemailer's message option configuration. Please defer to the Nodemailer message configuration for all body parameters below.Note that with ...

Outbound Emails

Developer Email API for Custom Domains and Webhooks

Please ensure that you have followed setup instructions for your domain. These instructions can be found at My Account → Domains → Settings → Outbound SMTP Configuration. You need to ensure setup of D...

Aliases

Developer Email API for Custom Domains and Webhooks

Generate an alias password Note that if you do not email instructions, then the username and password will be in the JSON response body of a successful request in the format { username: 'alias@yourdom...

Localization

Developer Email API for Custom Domains and Webhooks

Our service is translated to over 25 different languages. All API response messages are translated to the last locale detected of the user making the API request. You can override this by passing a cu...

Errors

Developer Email API for Custom Domains and Webhooks

If any errors occur, the response body of the API request will contain a detailed error message. Code Name 200 OK 400 Bad Request 401 Unauthorized 403 Forbidden 404 Not Found 429 Too Many Requests 500...

Domains

Developer Email API for Custom Domains and Webhooks

Tip Domain endpoints with a domain's name /v1/domains/:domain_name as their endpoint are interchangeable with a domain's ID :domain_id. This means you can refer to the domain by either its name or id ...

Developer Email API for Custom Domains and Webhooks

Developers love our RESTful email forwarding API for custom domains.

Base URI

Developer Email API for Custom Domains and Webhooks

The current HTTP base URI path is: https:// api .forwardemail.net.

44 Best Email API 's for Developers in 2025

Reviews, comparison, screenshots and more for the 44 best email service API 's for developers.

Authentication

Developer Email API for Custom Domains and Webhooks

All endpoints require your API key to be set as the "username" value of the request's Basic Authorization header (with the exception of Alias Contacts, Alias Calendars, and Alias Mailboxes which use a...

Alias Calendars (CalDAV)

Developer Email API for Custom Domains and Webhooks

Note Unlike other API endpoints, these require Authentication "username" equal to the alias username and "password" equal to the alias generated password as Basic Authorization headers. Warning This e...

List domains

Developer Email API for Custom Domains and Webhooks

Note As of November 1st, 2024 the API endpoints for List domains and List domain aliases will default to 1000 max results per page. If you would like to opt-in to this behavior early, you can pass ?pa...

Alias Contacts (CardDAV)

Developer Email API for Custom Domains and Webhooks

Note Unlike other API endpoints, these require Authentication "username" equal to the alias username and "password" equal to the alias generated password as Basic Authorization headers. Warning This e...

List domain aliases

Developer Email API for Custom Domains and Webhooks

Note As of November 1st, 2024 the API endpoints for List domains and List domain aliases will default to 1000 max results per page. If you would like to opt-in to this behavior early, you can pass ?pa...

Generate an alias password

Developer Email API for Custom Domains and Webhooks

Note that if you do not email instructions, then the username and password will be in the JSON response body of a successful request in the format { username: '[email protected]', password: 'some-g...

Alias Messages (IMAP/POP3)

Developer Email API for Custom Domains and Webhooks

Note Unlike other API endpoints, these require Authentication "username" equal to the alias username and "password" equal to the alias generated password as Basic Authorization headers. Warning This e...

Retrieve logs

Developer Email API for Custom Domains and Webhooks

Our API programmatically allows you to download logs for your account. Submitting a request to this endpoint will process all logs for your account and email them to you as an attachment (Gzip compres...

Logs

Developer Email API for Custom Domains and Webhooks

Retrieve logs Our API programmatically allows you to download logs for your account. Submitting a request to this endpoint will process all logs for your account and email them to you as an attachment...

Create domain

Developer Email API for Custom Domains and Webhooks

> POST /v1/domainsBody Parameter Required Type Description domain Yes String (FQDN or IP) Fully qualified domain name ("FQDN") or IP address team_domain No String (domain ID or domain name; FQDN) Auto...

Create new domain alias

Developer Email API for Custom Domains and Webhooks

> POST /v1/domains/example.com/aliasesBody Parameter Required Type Description name No String Alias name (if not provided or if blank, then a random alias is generated) recipients No String or Array L...

Create email

Developer Email API for Custom Domains and Webhooks

Our API for creating an email is inspired by and leverages Nodemailer's message option configuration. Please defer to the Nodemailer message configuration for all body parameters below.Note that with ...