# Smtp2go AI integration on Definable

> SMTP2GO is a reliable email delivery service that ensures your emails reach recipients' inboxes efficiently.

## What this connects

SMTP2GO is a reliable email delivery service that ensures your emails reach recipients' inboxes efficiently.

Vendor: https://www.smtp2go.com/

## Tools available

**32** tools available. First 12:

- `SMTP2GO_ACTIVITY_SEARCH` — Search Email Activity — Tool to search activity events like sends, opens, clicks, and bounces. Use when you need to filter account email activity by date, event, recipient, or message ID.
- `SMTP2GO_ALLOWED_SENDERS_ADD` — Add Allowed Sender — Tool to add a new allowed sender email address. Use when you need to whitelist a sender before sending email. Example: Add "user@example.com" to allowed senders list.
- `SMTP2GO_ALLOWED_SENDERS_REMOVE` — Remove Allowed Sender — Tool to remove a sender email address from the allowed senders list. Use when you need to revoke send permissions for a validated address.
- `SMTP2GO_ALLOWED_SENDERS_UPDATE` — Update Allowed Senders — Tool to update (replace) the entire allowed senders list in your SMTP2GO account. This action overwrites the current list with the provided email addresses and domain names. Use when you need to set or update who can send emails through your account. Example: 'Update allowed senders to include user@example.com and admin@company.com in whitelist mode.'
- `SMTP2GO_ALLOWED_SENDERS_VIEW` — View Allowed Senders — Tool to view the list of allowed senders configured in your account. Use after setting up SMTP2GO authentication to retrieve your allowed-senders list. Example: 'Show me all verified allowed senders.'
- `SMTP2GO_DOMAIN_ADD` — Add Sender Domain — Tool to add a new sender domain for SPF/DKIM verification. Use when you need to register a domain and optionally set tracking/return-path subdomains.
- `SMTP2GO_EMAIL_SEARCH` — Search SMTP2GO Emails — Tool to search sent emails. Use when filtering your SMTP2GO account's email activity by criteria like date, sender, or recipient. Call after authentication.
- `SMTP2GO_IP_ALLOW_LIST_ADD` — Add IP Allow List — Tool to add a public IP address to your account's IP allow list. Use when you need to whitelist specific sending sources by IP after confirming accuracy. Note: Only plain IP addresses are supported (no CIDR notation). Private/reserved IP ranges are rejected.
- `SMTP2GO_IP_ALLOW_LIST_REMOVE` — Remove IP from Allow List — Tool to remove an IP address from your account's IP allow list. Use after identifying the IP you wish to revoke.
- `SMTP2GO_IP_ALLOW_LIST_VIEW` — View IP Allow List — Tool to view the list of IP addresses in your IP allow list. Use after confirming your SMTP2GO API key is set.
- `SMTP2GO_SMS_VIEW_RECEIVED` — View Received SMS — Tool to retrieve received SMS replies for your SMTP2GO account. Use when you need to fetch incoming SMS messages for analysis or display. Pagination supported via limit and offset.
- `SMTP2GO_STATS_EMAIL_BOUNCES` — Get Email Bounces Stats — Tool to retrieve email bounces statistics. Use after sending emails to analyze bounce metrics over a time period.

## Auth

Auth schemes: `API_KEY`.

## How agents use Smtp2go

Inside a Definable workflow, Smtp2go is one of the tools the **Distributor specialist** can call. Example coordination patterns:

- **Researcher → Smtp2go** — the Researcher (GPT-5.5) pulls context from Smtp2go (records, threads, documents), synthesises findings, and briefs the rest of the team.
- **Writer → Distributor → Smtp2go** — the Writer (Claude Opus 4.7) drafts copy in brand voice, the Verifier passes it, then the Distributor writes the result into Smtp2go (create record, post message, draft email).
- **Designer / Engineer → Distributor → Smtp2go** — the Designer ships an asset or the Engineer ships a code change, the Distributor delivers it via Smtp2go (attach file, open PR comment, post status).

The Verifier checks every Smtp2go call. On rate limit, schema drift, or auth refresh it self-heals and retries — the workflow completes without manual intervention.

## Categories

- transactional email — https://definable.ai/apps/category/transactional-email/
- email — https://definable.ai/apps/category/email/

## Related

- HTML page: https://definable.ai/apps/smtp2go/
- Same category (transactional email): https://definable.ai/apps/category/transactional-email/
- All integrations: https://definable.ai/apps/
- Workflow (multi-agent loop): https://definable.ai/workflow/
- Apps llms.txt index: https://definable.ai/llms-apps.txt