Mailgun
· #115 most-usedTransactional email infrastructure, fully agent-driven
Mailgun is the developer-grade email API used by over 100,000 companies to send, receive, and track transactional and marketing email at scale. Connect it to Actionist and your agents can validate addresses before they bounce, send personalised transactional emails in milliseconds, parse inbound mail into structured actions, and monitor delivery health across every sending domain — all without touching an SMTP client or reading a log file.
Eliminates manual work. Agents eliminate the manual cycle of exporting lists for validation, chasing failed deliveries, reconciling unsubscribes across tools, and pulling weekly domain-health reports.
What your Mailgun agent runs on autopilot
A week of scheduled jobs your Actionist agent will execute on your behalf.
Mailgun × every other app you use
End-to-end automations that span multiple apps — each one a real business outcome.
Churn signal to saved customer in 60 seconds
When a customer sends an email flagged as a cancellation intent, the agent reads their delivery and open history from Mailgun's event log, crafts a retention email with their actual usage stats, fires it via Send an email, alerts the CSM in Slack, and blocks out a rescue call slot on Google Calendar — all before a human would have finished reading the original message. Ten at-risk accounts handled per week without a single manual intervention.
Time saved for your team — every week, on autopilot
Savings
What your team gets back — two angles: what you stop doing manually, and what that's worth.
What you do manually today
What your agent runs for you
- Sales18 min / weekManual address validation
Sales reps copy-paste prospect emails into a validation tool before outreach, then manually remove bad addresses from the sequence.
Sales Agent0 minAgent validates before every sendWhen a prospect is added to an outreach sequence the agent calls Validate Email first — risky and disposable addresses are flagged before a single send leaves the queue.
- Marketing13 min / weekManual list-hygiene exports
Marketers export subscriber lists to a third-party validator, wait for results, and manually remove bad addresses before each campaign.
Marketing Agent0 minAutomated bulk validation pre-sendThe agent submits the full list to Bulk Email Validation, waits for results, strips risky addresses, and updates the CRM — all before the campaign enters the send queue.
- Customer Support18 min / weekFailed-email manual triage
Support agents manually cross-reference bounce notifications from Mailgun with the ticketing system to find affected customers and update their contact records.
Customer Support Agent0 minBounce-to-ticket automationWhen a New Bounce Event fires the agent creates a flagged support ticket, updates the contact record in HubSpot, and removes the address from all mailing lists — zero manual steps.
- Human Resources7 min / weekOffer-letter email tracking
HR manually checks whether offer-letter emails were delivered and opens by logging into the Mailgun dashboard and searching by recipient.
Human Resources Agent0 minDelivery confirmation on every offerAfter each offer-letter send the agent monitors the New Delivery Event webhook and logs the delivery timestamp to the applicant record — HR knows without opening the dashboard.
- Finance13 min / weekInvoice-delivery chasing
Finance staff periodically check Mailgun's event log to confirm invoices landed and manually follow up when they spot undelivered messages.
Finance Agent0 minAutomatic delivery-gap escalationThe agent fires the invoice via Send Email and listens for a New Open/Click Event — if none arrives in 48 hours it auto-creates an AR follow-up task, no log-checking needed.
- Operations25 min / weekDomain-health log review
Ops engineers log into the Mailgun dashboard weekly to check bounce rates, complaint rates, and DNS verification status across all sending domains.
Operations Agent0 minScheduled reputation health digestEach Monday the agent calls Get Email Statistics and Get Domain Details for all domains, computes week-over-week deltas, and posts a formatted digest to the #email-ops channel — no dashboard login needed.
- Legal6 min / weekUnsubscribe compliance logging
Legal relies on manual exports from Mailgun to document unsubscribe timestamps for CAN-SPAM and GDPR compliance audits.
Legal Agent0 minReal-time unsubscribe audit trailEvery New Unsubscribe Event is immediately logged to the compliance database with recipient address, domain, and timestamp — the audit trail is always current without any export step.
Calculate what your team saves
Based on Mailgun's typical team usage — the visible tasks plus a few other automations the agent runs: ~2.5 hrs / person / week of admin work automated.
How to plug Mailgun into Actionist
Pick the connection method that suits your environment.
The fastest path to Mailgun. Install the Mailgun MCP server in one click and the agent reaches your account through a permissioned API handshake — no API keys to rotate, no domain-region config to get wrong.
Find Mailgun in the Apps library and click Connect. MCP is selected by default.
Actionist opens Mailgun's authorisation flow. Select the sending domain(s) you want the agent to access and confirm. Your API key is never exposed in Actionist.
Actionist runs a read-only call to verify the handshake. You're ready.
16 actions your agent can call
Read and write operations available to your Actionist agent.
10 events your agent can react to
Events your agent watches for, and the actions it kicks off in response.
Skills that pair with Mailgun
Reusable agent skills that work well alongside this app.
Protects Mailgun workflows from prompt injection in inbound email bodies and shields API keys from accidental exposure in agent outputs.
MCP servers that work with Mailgun
Connect Actionist to MCP servers built for or around this app.