Elastic Email Go SDK

The official Go client library for the Elastic Email REST API v4.

Installation • Quick start • Examples • API reference • Models • Contributing

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Features

• Transactional and bulk email. Send single messages, bulk campaigns or CSV merge-file sends.
• Contacts, lists and segments. Add, update, import, export and bulk-delete contacts.
• Campaigns and automations. Create, update, pause and trigger automations for a contact.
• Templates, files and attachments. Manage templates and uploaded files.
• Domains. Verify sending domains and check SPF, DKIM, tracking and certificate status.
• Webhooks and inbound routes. Receive delivery events and route incoming mail.
• Statistics, events and suppressions. Track delivery, bounces, complaints and unsubscribes.
• Subaccounts and security. Manage subaccounts and API keys.
• Idiomatic Go. Every call takes a context.Context, uses a fluent request builder ending in Execute(), and has no third-party runtime dependencies.

Requirements

Platform	Version
Go	1.18 or later, with Go modules
Dependencies	None beyond the Go standard library

You'll also need an Elastic Email API key. You can create one in your API settings. Each endpoint's documentation lists the access level it needs.

Installation

Add the github.com/elasticemail/elasticemail-go/v4 module to your project:

go get github.com/elasticemail/elasticemail-go/v4@latest

Then import it. The package name is ElasticEmail:

import ElasticEmail "github.com/elasticemail/elasticemail-go/v4"

Note

Since 4.2.0 the module path ends in /v4. If you imported github.com/elasticemail/elasticemail-go before, update your imports and run go mod tidy.

Quick start

Important

Elastic Email only sends from verified domains. Before your first send, verify your sending domain and use an address on that domain as the sender.

Configure the client

package main

import (
	"context"
	"os"

	ElasticEmail "github.com/elasticemail/elasticemail-go/v4"
)

func main() {
	client := ElasticEmail.NewAPIClient(ElasticEmail.NewConfiguration())

	ctx := context.WithValue(context.Background(), ElasticEmail.ContextAPIKeys,
		map[string]ElasticEmail.APIKey{
			"apikey": {Key: os.Getenv("ELASTICEMAIL_API_KEY")},
		})

	// use client and ctx, see below
}

The API key travels in the request context, so pass that ctx to every call.

Tip

Keep your API key out of source code. Load it from an environment variable or a secrets manager.

Send a transactional email

html := ElasticEmail.NewBodyPart(ElasticEmail.BODYCONTENTTYPE_HTML)
html.SetContent("<h1>Hello!</h1><p>Thanks for signing up.</p>")
text := ElasticEmail.NewBodyPart(ElasticEmail.BODYCONTENTTYPE_PLAIN_TEXT)
text.SetContent("Hello! Thanks for signing up.")

content := ElasticEmail.NewEmailContent("My App <no-reply@yourdomain.com>")
content.SetSubject("Welcome aboard!")
content.SetBody([]ElasticEmail.BodyPart{*html, *text})

recipients := ElasticEmail.NewTransactionalRecipient([]string{"john.doe@example.com"})
message := ElasticEmail.NewEmailTransactionalMessageData(*recipients, *content)

result, httpRes, err := client.EmailsAPI.EmailsTransactionalPost(ctx).
	EmailTransactionalMessageData(*message).
	Execute()
if err != nil {
	var apiErr *ElasticEmail.GenericOpenAPIError
	if errors.As(err, &apiErr) && httpRes != nil {
		log.Fatalf("Elastic Email API error %d: %s", httpRes.StatusCode, apiErr.Body())
	}
	log.Fatal(err)
}
fmt.Printf("Sent. TransactionID: %s, MessageID: %s\n", result.GetTransactionID(), result.GetMessageID())

The from address must use a domain you've verified in your Elastic Email account.

Send from a template with merge fields

content := ElasticEmail.NewEmailContent("My App <no-reply@yourdomain.com>")
content.SetTemplateName("welcome-template")
content.SetMerge(map[string]string{"firstname": "John"})

recipients := ElasticEmail.NewTransactionalRecipient([]string{"john.doe@example.com"})
message := ElasticEmail.NewEmailTransactionalMessageData(*recipients, *content)

_, _, err := client.EmailsAPI.EmailsTransactionalPost(ctx).
	EmailTransactionalMessageData(*message).
	Execute()

Using a proxy or a custom HTTP client

Configuration.HTTPClient accepts any *http.Client, so you can set timeouts, a proxy or your own transport:

proxyURL, _ := url.Parse("http://myProxyUrl:80/")

cfg := ElasticEmail.NewConfiguration()
cfg.HTTPClient = &http.Client{
	Timeout:   30 * time.Second,
	Transport: &http.Transport{Proxy: http.ProxyURL(proxyURL)},
}
client := ElasticEmail.NewAPIClient(cfg)

The default client (http.DefaultClient) also honours the HTTP_PROXY and HTTPS_PROXY environment variables.

Pointer helpers

Optional model fields are pointers. Use the setters (SetSubject, SetMerge, …) or the Ptr* helpers (PtrString, PtrInt32, PtrBool, PtrTime, …) to build values inline, and the Get* accessors to read them without nil checks.

More examples

More complete, runnable samples are in the Elastic Email examples repository. It covers transactional email, SMTP, webhooks, inbound email, contacts and serverless platforms across 20+ languages and frameworks.

• 🐹 Go examples (plain net/http, Chi and Gin)
• 📂 All examples

Authentication

Scheme	Header	Used for
apikey	X-ElasticEmail-ApiKey	All standard API calls
ApiKeyAuthCustomBranding	X-Auth-Token	Custom-branding (white-label) accounts

Both are passed as entries in the map[string]ElasticEmail.APIKey stored under ElasticEmail.ContextAPIKeys, keyed by the scheme name.

API limits

• Up to 20 concurrent connections per account
• A hard timeout of 600 seconds per request

API reference

All URIs are relative to https://api.elasticemail.com/v4. The SDK covers 114 endpoints across 16 API services, exposed as fields on APIClient: CampaignsAPI, ContactsAPI, DomainsAPI, EmailsAPI, EventsAPI, FilesAPI, InboundRouteAPI, ListsAPI, SecurityAPI, SegmentsAPI, StatisticsAPI, SubAccountsAPI, SuppressionsAPI, TemplatesAPI, VerificationsAPI and WebhookAPI.

Show all endpoints

All URIs are relative to https://api.elasticemail.com/v4

Class	Method	HTTP request	Description
CampaignsAPI	CampaignsAutomationByNameTriggerPost	Post /campaigns/automation/{name}/trigger	Trigger Automation for Contact
CampaignsAPI	CampaignsByNameDelete	Delete /campaigns/{name}	Delete Campaign
CampaignsAPI	CampaignsByNameGet	Get /campaigns/{name}	Load Campaign
CampaignsAPI	CampaignsByNamePausePut	Put /campaigns/{name}/pause	Pause Campaign
CampaignsAPI	CampaignsByNamePut	Put /campaigns/{name}	Update Campaign
CampaignsAPI	CampaignsGet	Get /campaigns	Load Campaigns
CampaignsAPI	CampaignsPost	Post /campaigns	Add Campaign
ContactsAPI	ContactsByEmailDelete	Delete /contacts/{email}	Delete Contact
ContactsAPI	ContactsByEmailGet	Get /contacts/{email}	Load Contact
ContactsAPI	ContactsByEmailPut	Put /contacts/{email}	Update Contact
ContactsAPI	ContactsDeletePost	Post /contacts/delete	Delete Contacts Bulk
ContactsAPI	ContactsExportByIdStatusGet	Get /contacts/export/{id}/status	Check Export Status
ContactsAPI	ContactsExportPost	Post /contacts/export	Export Contacts
ContactsAPI	ContactsGet	Get /contacts	Load Contacts
ContactsAPI	ContactsImportPost	Post /contacts/import	Upload Contacts
ContactsAPI	ContactsPost	Post /contacts	Add Contact
DomainsAPI	DomainsByDomainDelete	Delete /domains/{domain}	Delete Domain
DomainsAPI	DomainsByDomainGet	Get /domains/{domain}	Load Domain
DomainsAPI	DomainsByDomainPut	Put /domains/{domain}	Update Domain
DomainsAPI	DomainsByDomainRestrictedGet	Get /domains/{domain}/restricted	Check for domain restriction
DomainsAPI	DomainsByDomainVerificationPut	Put /domains/{domain}/verification	Verify Domain
DomainsAPI	DomainsByEmailDefaultPatch	Patch /domains/{email}/default	Set Default
DomainsAPI	DomainsGet	Get /domains	Load Domains
DomainsAPI	DomainsPost	Post /domains	Add Domain
EmailsAPI	EmailsByMsgidViewGet	Get /emails/{msgid}/view	View Email
EmailsAPI	EmailsByTransactionidStatusGet	Get /emails/{transactionid}/status	Get Status
EmailsAPI	EmailsMergefilePost	Post /emails/mergefile	Send Bulk Emails CSV
EmailsAPI	EmailsPost	Post /emails	Send Bulk Emails
EmailsAPI	EmailsTransactionalPost	Post /emails/transactional	Send Transactional Email
EventsAPI	EventsByTransactionidGet	Get /events/{transactionid}	Load Email Events
EventsAPI	EventsChannelsByNameExportPost	Post /events/channels/{name}/export	Export Channel Events
EventsAPI	EventsChannelsByNameGet	Get /events/channels/{name}	Load Channel Events
EventsAPI	EventsChannelsExportByIdStatusGet	Get /events/channels/export/{id}/status	Check Channel Export Status
EventsAPI	EventsExportByIdStatusGet	Get /events/export/{id}/status	Check Export Status
EventsAPI	EventsExportPost	Post /events/export	Export Events
EventsAPI	EventsGet	Get /events	Load Events
FilesAPI	FilesByNameDelete	Delete /files/{name}	Delete File
FilesAPI	FilesByNameGet	Get /files/{name}	Download File
FilesAPI	FilesByNameInfoGet	Get /files/{name}/info	Load File Details
FilesAPI	FilesGet	Get /files	List Files
FilesAPI	FilesPost	Post /files	Upload File
InboundRouteAPI	InboundrouteByIdDelete	Delete /inboundroute/{id}	Delete Route
InboundRouteAPI	InboundrouteByIdGet	Get /inboundroute/{id}	Get Route
InboundRouteAPI	InboundrouteByIdPut	Put /inboundroute/{id}	Update Route
InboundRouteAPI	InboundrouteGet	Get /inboundroute	Get Routes
InboundRouteAPI	InboundrouteOrderPut	Put /inboundroute/order	Update Sorting
InboundRouteAPI	InboundroutePost	Post /inboundroute	Create Route
ListsAPI	ListsByListnameContactsGet	Get /lists/{listname}/contacts	Load Contacts in List
ListsAPI	ListsByNameContactsPost	Post /lists/{name}/contacts	Add Contacts to List
ListsAPI	ListsByNameContactsRemovePost	Post /lists/{name}/contacts/remove	Remove Contacts from List
ListsAPI	ListsByNameDelete	Delete /lists/{name}	Delete List
ListsAPI	ListsByNameGet	Get /lists/{name}	Load List
ListsAPI	ListsByNamePut	Put /lists/{name}	Update List
ListsAPI	ListsGet	Get /lists	Load Lists
ListsAPI	ListsPost	Post /lists	Add List
SecurityAPI	SecurityApikeysByNameDelete	Delete /security/apikeys/{name}	Delete ApiKey
SecurityAPI	SecurityApikeysByNameGet	Get /security/apikeys/{name}	Load ApiKey
SecurityAPI	SecurityApikeysByNamePut	Put /security/apikeys/{name}	Update ApiKey
SecurityAPI	SecurityApikeysGet	Get /security/apikeys	List ApiKeys
SecurityAPI	SecurityApikeysPost	Post /security/apikeys	Add ApiKey
SecurityAPI	SecuritySmtpByNameDelete	Delete /security/smtp/{name}	Delete SMTP Credential
SecurityAPI	SecuritySmtpByNameGet	Get /security/smtp/{name}	Load SMTP Credential
SecurityAPI	SecuritySmtpByNamePut	Put /security/smtp/{name}	Update SMTP Credential
SecurityAPI	SecuritySmtpGet	Get /security/smtp	List SMTP Credentials
SecurityAPI	SecuritySmtpPost	Post /security/smtp	Add SMTP Credential
SegmentsAPI	SegmentsByNameDelete	Delete /segments/{name}	Delete Segment
SegmentsAPI	SegmentsByNameGet	Get /segments/{name}	Load Segment
SegmentsAPI	SegmentsByNamePut	Put /segments/{name}	Update Segment
SegmentsAPI	SegmentsGet	Get /segments	Load Segments
SegmentsAPI	SegmentsPost	Post /segments	Add Segment
StatisticsAPI	StatisticsCampaignsByNameGet	Get /statistics/campaigns/{name}	Load Campaign Stats
StatisticsAPI	StatisticsCampaignsGet	Get /statistics/campaigns	Load Campaigns Stats
StatisticsAPI	StatisticsChannelsByNameGet	Get /statistics/channels/{name}	Load Channel Stats
StatisticsAPI	StatisticsChannelsGet	Get /statistics/channels	Load Channels Stats
StatisticsAPI	StatisticsGet	Get /statistics	Load Statistics
SubAccountsAPI	SubaccountsByEmailApikeyGet	Get /subaccounts/{email}/apikey	Get SubAccount ApiKey
SubAccountsAPI	SubaccountsByEmailCreditsPatch	Patch /subaccounts/{email}/credits	Add, Subtract Email Credits
SubAccountsAPI	SubaccountsByEmailDelete	Delete /subaccounts/{email}	Delete SubAccount
SubAccountsAPI	SubaccountsByEmailGet	Get /subaccounts/{email}	Load SubAccount
SubAccountsAPI	SubaccountsByEmailSettingsEmailPut	Put /subaccounts/{email}/settings/email	Update SubAccount Email Settings
SubAccountsAPI	SubaccountsGet	Get /subaccounts	Load SubAccounts
SubAccountsAPI	SubaccountsPost	Post /subaccounts	Add SubAccount
SuppressionsAPI	SuppressionsBouncesGet	Get /suppressions/bounces	Get Bounce List
SuppressionsAPI	SuppressionsBouncesImportPost	Post /suppressions/bounces/import	Add Bounces Async
SuppressionsAPI	SuppressionsBouncesPost	Post /suppressions/bounces	Add Bounces
SuppressionsAPI	SuppressionsByEmailDelete	Delete /suppressions/{email}	Delete Suppression
SuppressionsAPI	SuppressionsByEmailGet	Get /suppressions/{email}	Get Suppression
SuppressionsAPI	SuppressionsComplaintsGet	Get /suppressions/complaints	Get Complaints List
SuppressionsAPI	SuppressionsComplaintsImportPost	Post /suppressions/complaints/import	Add Complaints Async
SuppressionsAPI	SuppressionsComplaintsPost	Post /suppressions/complaints	Add Complaints
SuppressionsAPI	SuppressionsGet	Get /suppressions	Get Suppressions
SuppressionsAPI	SuppressionsUnsubscribesGet	Get /suppressions/unsubscribes	Get Unsubscribes List
SuppressionsAPI	SuppressionsUnsubscribesImportPost	Post /suppressions/unsubscribes/import	Add Unsubscribes Async
SuppressionsAPI	SuppressionsUnsubscribesPost	Post /suppressions/unsubscribes	Add Unsubscribes
TemplatesAPI	TemplatesByNameDelete	Delete /templates/{name}	Delete Template
TemplatesAPI	TemplatesByNameGet	Get /templates/{name}	Load Template
TemplatesAPI	TemplatesByNamePut	Put /templates/{name}	Update Template
TemplatesAPI	TemplatesGet	Get /templates	Load Templates
TemplatesAPI	TemplatesPost	Post /templates	Add Template
VerificationsAPI	VerificationsByEmailDelete	Delete /verifications/{email}	Delete Email Verification Result
VerificationsAPI	VerificationsByEmailGet	Get /verifications/{email}	Get Email Verification Result
VerificationsAPI	VerificationsByEmailPost	Post /verifications/{email}	Verify Email
VerificationsAPI	VerificationsFilesByIdDelete	Delete /verifications/files/{id}	Delete File Verification Result
VerificationsAPI	VerificationsFilesByIdResultDownloadGet	Get /verifications/files/{id}/result/download	Download File Verification Result
VerificationsAPI	VerificationsFilesByIdResultGet	Get /verifications/files/{id}/result	Get Detailed File Verification Result
VerificationsAPI	VerificationsFilesByIdVerificationPost	Post /verifications/files/{id}/verification	Start verification
VerificationsAPI	VerificationsFilesPost	Post /verifications/files	Upload File with Emails
VerificationsAPI	VerificationsFilesResultGet	Get /verifications/files/result	Get Files Verification Results
VerificationsAPI	VerificationsGet	Get /verifications	Get Emails Verification Results
WebhookAPI	WebhookByPublicidDelete	Delete /webhook/{publicid}	Delete Webhook
WebhookAPI	WebhookByPublicidGet	Get /webhook/{publicid}	Load Webhook
WebhookAPI	WebhookByPublicidPut	Put /webhook/{publicid}	Update Webhook
WebhookAPI	WebhookGet	Get /webhook	Load Webhooks
WebhookAPI	WebhookPost	Post /webhook	Add Webhook

Models

Show all 98 models

• AccessLevel
• AccountStatusEnum
• ApiKey
• ApiKeyPayload
• BodyContentType
• BodyPart
• Campaign
• CampaignOptions
• CampaignRecipient
• CampaignStatus
• CampaignTemplate
• CertificateValidationStatus
• ChannelLogStatusSummary
• CompressionFormat
• ConsentData
• ConsentTracking
• Contact
• ContactActivity
• ContactPayload
• ContactSource
• ContactStatus
• ContactUpdatePayload
• ContactsList
• DKIMRecord
• DeliveryOptimizationType
• DomainData
• DomainDetail
• DomainOwner
• DomainPayload
• DomainUpdatePayload
• EmailContent
• EmailData
• EmailJobFailedStatus
• EmailJobStatus
• EmailMessageData
• EmailPredictedValidationStatus
• EmailRecipient
• EmailSend
• EmailStatus
• EmailTransactionalMessageData
• EmailValidationResult
• EmailValidationStatus
• EmailView
• EmailsPayload
• EncodingType
• EventType
• EventsOrderBy
• ExportFileFormats
• ExportLink
• ExportStatus
• FileInfo
• FilePayload
• FileUploadResult
• InboundPayload
• InboundRoute
• InboundRouteActionType
• InboundRouteFilterType
• ListPayload
• ListUpdatePayload
• LogJobStatus
• LogStatusSummary
• MergeEmailPayload
• MessageAttachment
• MessageCategory
• MessageCategoryEnum
• NewApiKey
• NewSmtpCredentials
• Options
• RecipientEvent
• Segment
• SegmentPayload
• SmtpCredentials
• SmtpCredentialsPayload
• SortOrderItem
• SplitOptimizationType
• SplitOptions
• SubAccountInfo
• SubaccountEmailCreditsPayload
• SubaccountEmailSettings
• SubaccountEmailSettingsPayload
• SubaccountPayload
• SubaccountSettingsInfo
• SubaccountSettingsInfoPayload
• Suppression
• Template
• TemplatePayload
• TemplateScope
• TemplateType
• TrackingType
• TrackingValidationStatus
• TransactionalRecipient
• Utm
• VerificationFileResult
• VerificationFileResultDetails
• VerificationStatus
• Webhook
• WebhookCreatePayload
• WebhookUpdatePayload

Versioning

The SDK follows the Elastic Email API v4 and uses semantic import versioning, so the major version is part of the module path (/v4). Available versions are listed on pkg.go.dev and in GitHub Releases.

Build details

• API version: 4.0.0
• SDK version: 4.2.0
• Generator version: 7.11.0
• Build package: org.openapitools.codegen.languages.GoClientCodegen

Contributing

Contributions are welcome! Most of this SDK is generated from the OpenAPI specification, so please read CONTRIBUTING.md before opening a pull request.

• 🐛 Report a bug
• 💡 Request a feature
• 🔒 Report a security issue

This project follows the Contributor Covenant Code of Conduct.

Support

Important

The fastest way to get help is the chat widget on elasticemail.com. Our support team can help with your account, sending, deliverability and API questions.

• 💬 Chat with support on elasticemail.com (preferred)
• 📚 API documentation
• 🧪 Examples repository
• 🐛 GitHub issues, for bugs in this SDK only

License

Released under the MIT License. Copyright © 2021–2026 Elastic Email.