Enginemailer

@Enginemailer show me all campaigns that haven't been delivered yet and tell me which ones are scheduled for this week

Found 4 undelivered campaigns in your account. Two are scheduled for this week: 'Product Launch Announcement' (scheduled Thu 2:00 PM, 1,247 recipients) and 'Weekly Newsletter #42' (scheduled Fri 9:00 AM, 3,891 recipients). The other two are drafts with no send date set: 'Holiday Sale Teaser' and 'Customer Survey Follow-up'. All campaigns have passed validation and are ready to send.

This example shows the MCP's ability to fetch campaign metadata and let the AI filter by schedule. Useful for pre-send audits. Requires API key with campaign read permissions. The MCP returns raw campaign objects; the AI handles date logic and recipient counts in the summary.

@Enginemailer pause campaign 'Product Launch Announcement' and add sarah@example.com to the VIP Customers list with custom field 'account_tier' set to 'enterprise'

Campaign 'Product Launch Announcement' (ID: 87234) has been paused. It was scheduled to send in 6 hours to 1,247 recipients. You can resume or reschedule anytime. Separately, added sarah@example.com to the 'VIP Customers' list with account_tier='enterprise'. Subscriber ID: 450912. She'll receive future campaigns targeted to that list unless she unsubscribes.

Demonstrates two write operations in one prompt: halting a campaign mid-flight and registering a subscriber with metadata. Both actions are immediate and irreversible (pausing stops the send clock; the subscriber is live). Confirm the list name and custom field schema exist in your Enginemailer account before running.

@Enginemailer export a CSV report of all transactional emails sent in the last 30 days, then summarize bounce rates by subcategory

Export initiated for transactional emails from Jan 15–Feb 14, 2025. Report ID: rpt_8x3k. Polling status... Export completed (took ~40 seconds). Retrieved 18,429 send records. Bounce rate summary by subcategory: 'Order Confirmations' 1.2%, 'Password Resets' 0.8%, 'Shipping Notifications' 2.1%, 'Account Alerts' 1.5%. The 'Shipping Notifications' subcategory shows elevated bounces — likely stale addresses from older customer cohorts.

Showcases the export workflow: initiate, poll, retrieve, then let the AI analyze the CSV data. Exports are capped at 60 days of history and can take 30–90 seconds for large datasets. The MCP handles the async polling loop; you see the final analysis. Requires transactional email read scope.

When Enginemailer fits a small product team's email automation

A 5-person SaaS team running a freemium model needs to send a 3-email onboarding sequence when users sign up. Enginemailer's Insert Subscriber and Create Campaign tools let you script the entire flow in Switchy: a new signup triggers subscriber creation with custom fields (plan tier, signup date), then queues a campaign with conditional sends based on user activity. The API key auth means you can share the MCP across your team without per-seat licensing. The trade-off: if you're sending 10k+ emails daily or need advanced segmentation logic, you'll outgrow this fast—Enginemailer shines at sub-1000 subscriber lists where you want programmatic control without Mailchimp's UI overhead. If your onboarding sequence is static and you're under 500 active users, this MCP is the right call.

Why this MCP works for recurring content campaigns

A community manager at a 12-person startup sends a weekly digest of top forum posts to 800 subscribers. Enginemailer's List Campaign and Send Campaign tools let you build a Switchy workflow that pulls the week's highlights from your CMS, drafts the email body, creates the campaign, and sends it—all in one chat thread. The Pause Campaign tool is critical here: if you spot a typo or want to swap in a late-breaking post, you can halt the send mid-queue. The Export CSV Report tool gives you open rates and click data to refine next week's content mix. The boundary: if your digest needs A/B subject line testing or dynamic per-subscriber content blocks, Enginemailer's toolset is too basic. For a single-template weekly send with manual review before delivery, this MCP saves 20 minutes per week.

When to use Enginemailer for compliance reporting

A 3-person support team at a fintech needs to pull monthly reports of all transactional emails (password resets, payment confirmations) for SOC 2 audit trails. Enginemailer's Export CSV Report V2 and Check Export Status V2 tools let you request a 30-day export, poll for completion, and download the CSV—all scripted in Switchy so any team member can run the report without logging into the vendor dashboard. The 60-day lookback window covers most compliance windows, and the CSV format drops directly into your audit folder. The limit: if you need real-time alerting on failed sends or sub-second delivery logs, this MCP won't cut it—Enginemailer is built for batch reporting, not live monitoring. For monthly or quarterly audit pulls where you need a repeatable script, this is the cleanest option.