Connectors · MSP & PSA

SMTP2GO MCP server for AI agents.

actionlake is an MCP gateway: one remote MCP server that connects Claude and other MCP clients to SMTP2GO and the rest of your systems. It gives your agent 69 SMTP2GO actions (28 reads, 29 writes and 12 that wait for a confirmation) and holds the SMTP2GO credential itself, so the agent never does. It paces SMTP2GO's limits and records every call.

Connect SMTP2GO free See pricing

100,000 free calls a month. No card, no email, no password: press Start a free sandbox on the next screen and keep the key it shows you.

claude mcp add --transport http actionlake https://connect.actionlake.com/mcp

69actionsin one signed file
28readlook, never change
29writecreate and update
12wait for a yesdestructive, confirmed first

Set up

Connect SMTP2GO in three steps.

01
Add actionlake to Claude.
Run the command once in Claude Code; its consent page can create a free sandbox: 100,000 calls a month, no card. In the Claude app, add a custom connector with the URL below and paste your key on the consent page. Creating a new sandbox from the Claude app is not yet tested by us.
https://connect.actionlake.com/mcp
02
Connect SMTP2GO.
API key. No consent screen: your agent can connect it for you, but the key then passes through your chat. To keep it out of the model's context, paste it in the console instead. actionlake stores what you paste write-only, sealed under your tenant's key.
- api_keySMTP2GO API key (api-...)
- hostWhere your SMTP2GO lives: your host
```
account { op: "connections.requirements", service: "smtp2go" }
# free: exactly what to paste, and what is found for you
```

Make the first call. Check before a write.

Ask in plain words; Claude picks the action. Before anything changes, check validates the call and prices it, for free.

do    { action: "smtp2go.sender_domains.list" }# view sender domains · read · 1 upstream callcheck { action: "smtp2go.emails.send", input: { … } }# free: inputs, permissions, cost and confirmations, nothing sent

SMTP2GO at a glance

Sign-in: API key. No consent screen: your agent can connect it for you, but the key then passes through your chat. To keep it out of the model's context, paste it in the console instead.
You provide: api_key
Setup fields: host
Limits we pace to: 300 calls a minute, per connection
API covered: SMTP2GO API v3.0.4, at your SMTP2GO instance's API base URL, which you enter when connecting (path /v3)
Built from: SMTP2GO's documentation, read 23 October 2026developers.smtp2go.com
Service file: Version 1.0.0, signed (Ed25519)
Cached reads: 25 of 28 reads, for up to 5 minutes; a write clears what it affects
Shared entities: 3, so ask can line SMTP2GO up with your other systems
Data: Processed and stored in Sydney, Australia. No US region yet

Capabilities

What an AI agent can do in SMTP2GO.

69 actions in 18 areas. Every one carries its effect, so a key can allow the reads and hold the rest.

28readlook, never change
29writecreate and update
12destructivewait for a confirmation

Sender domains
7
1 read · 5 write · 1 destructive
View sender domains · Add a sender domain · Remove a sender domain · Verify a sender domain
API keys
6
2 read · 3 write · 1 destructive
Add a new API key · View API Keys · Remove an API key · Edit an API key
Stats
6
6 read · 0 write · 0 destructive
Email bounces · Email cycle · Email history · Email spam
SMTP users
5
1 read · 3 write · 1 destructive
Add an SMTP user · View SMTP users · Edit SMTP user details · Remove an SMTP user
Subaccounts
5
1 read · 3 write · 1 destructive
Add a subaccount · View subaccounts · Reopen a closed subaccount · Update a subaccount
Templates
5
2 read · 2 write · 1 destructive
Add an email template · View template details · Update an email template · Remove an email template
Allowed recipients
4
1 read · 2 write · 1 destructive
Add allowed recipients · View allowed recipients · Update allowed recipients · Remove allowed recipients
Allowed senders
4
1 read · 2 write · 1 destructive
Add allowed senders · View allowed senders · Update allowed senders · Remove allowed senders

10 more areas · 27 actions

Emails 4
SMS 4
Webhooks 4
Ip auth 3
Single sender emails 3
Suppressions 3
Archive 2
Scheduled emails 2
Activity 1
Dedicated ips 1

Top actions

The SMTP2GO API, shaped for agents.

The ids your agent types, what each does, and the one name it shares with other systems. 24 of SMTP2GO's 24 action names are shared with at least one other connector, so an agent learns them once.

Action	What it does	Effect	Same name in
`smtp2go.sender_domains.list`View sender domains	View sender domains.	read	`comm.sending_domain.list`18 connectors
`smtp2go.emails.send`Send a standard email	Send a standard email.	write	`comm.email.send`32 connectors
`smtp2go.emails.search`View and search sent emails	View and search sent emails.	read	`comm.email.search`5 connectors
`smtp2go.activity.search`Search activity	Search activity.	read	`comm.delivery_event.search`4 connectors
`smtp2go.sender_domains.create`Add a sender domain	Add a sender domain.	write	`comm.sending_domain.create`15 connectors
`smtp2go.sender_domains.delete`Remove a sender domain	Remove a sender domain.	destructive	`comm.sending_domain.delete`14 connectors
`smtp2go.suppressions.list`View suppressions	View suppressions.	read	`comm.suppression.list`17 connectors
`smtp2go.suppressions.add`Add a suppression	Add a suppression.	write	`comm.suppression.create`14 connectors
`smtp2go.templates.create`Add an email template	Add an email template.	write	`comm.email_template.create`34 connectors
`smtp2go.sms.send`Send SMS	Send SMS.	write	`comm.sms.send`26 connectors
`smtp2go.sms.list_sent`View sent SMS	View sent SMS.	read	`comm.sms.list`19 connectors
`smtp2go.webhooks.create`Add a new Webhook	Add a new Webhook.	write	`automation.webhook.create`209 connectors

Try it

Prompts to paste into Claude.

Each one names the SMTP2GO actions it will call, so you know what it reads and what it changes before you send it.

Readread
View sender domains in SMTP2GO and tell me what stands out.
callssmtp2go.sender_domains.list
Writewrite
Send a standard email in SMTP2GO. Show me exactly what you will send before you save it.
callssmtp2go.emails.send

Governance for SMTP2GO

Destructive actions wait for a yes.

12 SMTP2GO actions are destructive. These are all of them:

Remove a sender domainsmtp2go.sender_domains.delete
Remove a suppressionsmtp2go.suppressions.remove
Remove an email templatesmtp2go.templates.delete
Remove a specified Webhooksmtp2go.webhooks.delete
Remove an API keysmtp2go.api_keys.delete
Remove an IP Auth entrysmtp2go.ip_auth.delete
Remove an SMTP usersmtp2go.smtp_users.delete
Close a subaccountsmtp2go.subaccounts.close
Remove allowed senderssmtp2go.allowed_senders.remove
Remove a scheduled emailsmtp2go.scheduled_emails.delete
Remove allowed recipientssmtp2go.allowed_recipients.remove
Remove a single sender emailsmtp2go.single_sender_emails.delete

A destructive action runs only with confirm: true. Under the human policy the agent cannot confirm for itself: the run stops until a named person approves, in the console or from a signed link in an email. The cap on a key is refused before the call is sent, never after.

dosmtp2go.sender_domains.deleteconfirm_policy: human

Remove a sender domain?

intent: the user asked me to remove a sender domain

run suspended · waiting for a named person · key smtp2go-agent cannot confirm itself

In the console, or from an emailed signed link.

a key for this connector

account {  op: "keys.create", name: "smtp2go-agent",  allowed_actions: ["smtp2go.*"], cap_calls: 2000,  confirm_policy: "human_for_writes",  approval_rules: [    { match: "smtp2go.sender_domains.delete", approver: "[email protected]" },    { match: "smtp2go.suppressions.remove", approver: "[email protected]" },    { match: "smtp2go.templates.delete", approver: "[email protected]" }  ]}

Illustrative. Scoped to SMTP2GO only, capped at 2,000 upstream calls, every write confirmed, and the destructive ones approved by a named person.

Cost

What SMTP2GO costs on actionlake.

Every SMTP2GO action is one upstream call, the only thing actionlake bills. Searching, check, cost, account and any call SMTP2GO refused with 401, 403, 429 or a 5xx are free. Paid plans start at US$49 a month for 250,000 calls, with overage from US$0.30 down to US$0.18 per 1,000.

1upstream call per actionall 69 SMTP2GO actions
69actions pageeach page of a long list is one call
25reads can be cacheda cache hit costs nothing
100,000calls a month, freepaid plans from US$49 a month for 250,000

See pricing

Action index

Every SMTP2GO action.

69 actions by area: the id your agent calls, what it does, and its effect.

Sender domains7

smtp2go.sender_domains.createAdd a sender domainwrite
smtp2go.sender_domains.deleteRemove a sender domaindestructive
smtp2go.sender_domains.edit_return_pathEdit the return-path subdomainwrite
smtp2go.sender_domains.edit_subaccount_accessEdit subaccount accesswrite
smtp2go.sender_domains.edit_trackingEdit the tracking subdomainwrite
smtp2go.sender_domains.listView sender domainsread
smtp2go.sender_domains.verifyVerify a sender domainwrite

API keys6

smtp2go.api_keys.createAdd a new API keywrite
smtp2go.api_keys.deleteRemove an API keydestructive
smtp2go.api_keys.listView API Keysread
smtp2go.api_keys.patchPatch an API keywrite
smtp2go.api_keys.permissionsView Permissionsread
smtp2go.api_keys.updateEdit an API keywrite

Stats6

smtp2go.stats.email_bouncesEmail bouncesread
smtp2go.stats.email_cycleEmail cycleread
smtp2go.stats.email_historyEmail historyread
smtp2go.stats.email_spamEmail spamread
smtp2go.stats.email_summaryEmail summaryread
smtp2go.stats.email_unsubscribesEmail unsubscribesread

SMTP users5

smtp2go.smtp_users.createAdd an SMTP userwrite
smtp2go.smtp_users.deleteRemove an SMTP userdestructive
smtp2go.smtp_users.listView SMTP usersread
smtp2go.smtp_users.patchPatch an SMTP userwrite
smtp2go.smtp_users.updateEdit SMTP user detailswrite

Subaccounts5

smtp2go.subaccounts.closeClose a subaccountdestructive
smtp2go.subaccounts.createAdd a subaccountwrite
smtp2go.subaccounts.reopenReopen a closed subaccountwrite
smtp2go.subaccounts.searchView subaccountsread
smtp2go.subaccounts.updateUpdate a subaccountwrite

Templates5

smtp2go.templates.createAdd an email templatewrite
smtp2go.templates.deleteRemove an email templatedestructive
smtp2go.templates.getView template detailsread
smtp2go.templates.searchView email templatesread
smtp2go.templates.updateUpdate an email templatewrite

Allowed recipients4

smtp2go.allowed_recipients.addAdd allowed recipientswrite
smtp2go.allowed_recipients.getView allowed recipientsread
smtp2go.allowed_recipients.removeRemove allowed recipientsdestructive
smtp2go.allowed_recipients.updateUpdate allowed recipientswrite

Allowed senders4

smtp2go.allowed_senders.addAdd allowed senderswrite
smtp2go.allowed_senders.getView allowed sendersread
smtp2go.allowed_senders.removeRemove allowed sendersdestructive
smtp2go.allowed_senders.updateUpdate allowed senderswrite

Emails4

smtp2go.emails.searchView and search sent emailsread
smtp2go.emails.sendSend a standard emailwrite
smtp2go.emails.send_batchSend a batch of emailswrite
smtp2go.emails.send_mimeSend an MIME emailwrite

SMS4

smtp2go.sms.list_receivedView received SMSread
smtp2go.sms.list_sentView sent SMSread
smtp2go.sms.sendSend SMSwrite
smtp2go.sms.summarySMS Summaryread

Webhooks4

smtp2go.webhooks.createAdd a new Webhookwrite
smtp2go.webhooks.deleteRemove a specified Webhookdestructive
smtp2go.webhooks.listView Webhooksread
smtp2go.webhooks.updateEdit a specified Webhookwrite

Ip auth3

smtp2go.ip_auth.deleteRemove an IP Auth entrydestructive
smtp2go.ip_auth.listView IP Authread
smtp2go.ip_auth.patchPatch an IP Authwrite

Single sender emails3

smtp2go.single_sender_emails.createAdd a single sender emailwrite
smtp2go.single_sender_emails.deleteRemove a single sender emaildestructive
smtp2go.single_sender_emails.listView single sender emailsread

Suppressions3

smtp2go.suppressions.addAdd a suppressionwrite
smtp2go.suppressions.listView suppressionsread
smtp2go.suppressions.removeRemove a suppressiondestructive

Archive2

smtp2go.archive.get_emailView an archived emailread
smtp2go.archive.searchSearch archived contentread

Scheduled emails2

smtp2go.scheduled_emails.deleteRemove a scheduled emaildestructive
smtp2go.scheduled_emails.searchSearch schedule emailsread

Activity1

smtp2go.activity.searchSearch activityread

Dedicated ips1

smtp2go.dedicated_ips.listView Dedicated IP Addressesread

Questions

The SMTP2GO MCP server, answered.

Is there an SMTP2GO MCP server for Claude?

Yes. actionlake is an MCP gateway: a remote MCP server that gives Claude, or another MCP client, 69 SMTP2GO actions across sender domains, API keys, stats and SMTP users, through the same eight tools it uses for every other connector. actionlake is independent; it is not made or endorsed by SMTP2GO.

What do I need to connect SMTP2GO?

SMTP2GO API key (api-...). Plus your host. The free call account { op: "connections.requirements", service: "smtp2go" } lists exactly what to paste.

Can an AI agent delete or change things in SMTP2GO?

Only if its key allows it, and only with an explicit confirmation. 12 SMTP2GO actions are destructive, including remove a sender domain, remove a suppression and remove an email template. Each runs only with confirm: true. Under the human confirm policy, or an approval rule on the key, the run waits until a named person approves it.

Will an AI agent use up my SMTP2GO API limit?

actionlake paces every call to the limits in the SMTP2GO service file: 300 calls a minute per connection. Repeated reads are answered from cache (25 SMTP2GO actions can be), which never reaches SMTP2GO.

What does an SMTP2GO action cost?

One upstream call, the only unit actionlake bills. A list that pages bills one call per page (69 SMTP2GO actions page). Cache hits, searches, dry runs and calls SMTP2GO refused with 401, 403, 429 or a 5xx are free. The Free plan includes 100,000 calls a month with no card. Paid plans start at US$49 a month for 250,000 calls, with overage from US$0.30 down to US$0.18 per 1,000.

Which SMTP2GO API does it cover?

The SMTP2GO API v3.0.4 at your SMTP2GO instance's API base URL, which you enter when connecting (path /v3). It is built from SMTP2GO's documentation as read on 23 October 2026. 69 actions in 18 areas, each one in the signed service file (version 1.0.0).

Does actionlake keep my SMTP2GO data, and where?

actionlake processes and stores data in Sydney, Australia; there is no US region yet. Reads may be cached for up to 5 minutes, and a write clears the reads it affects. Each run's request and response is kept, sealed, for your plan's trace window: 1 day on Free, 3 days on Starter, 7 days on Pro, 14 days on Team, 30 days on Business and 30 days on Enterprise. Your SMTP2GO credential is sealed under your tenant's key, never logged and never returned. Your traffic is not used to train models.

Which AI clients can use it?

Claude Code, tested by us end to end, and the Claude app as a custom connector, tested by us with an existing key. Other MCP clients that support remote servers over Streamable HTTP (MCP revisions 2025-06-18 and 2025-11-25) and OAuth dynamic client registration, or a bearer header, should connect the same way; we have not tested them. Or plain REST, under the same action names.

Give your agent SMTP2GO today.

Connect SMTP2GO free See pricing

Start free - 100,000 calls/month, no card. No signup. Hard caps on every key. Cached answers are free.

SMTP2GO MCP server for AI agents.

Connect SMTP2GO in three steps.

Add actionlake to Claude.

Connect SMTP2GO.

Make the first call. Check before a write.

What an AI agent can do in SMTP2GO.

Sender domains

API keys

Stats

SMTP users

Subaccounts

Templates

Allowed recipients

Allowed senders