A missing invoice email
Sarah Chen, finance manager at Acme Ltd, asked whether the invoice email to BigCo had arrived. Memtro read the activity and found it hard-bounced, with the SMTP response saying the mailbox did not exist.
SMTP2GO + Memtro
Did that email get delivered, and why did it bounce?
SMTP2GO connects Memtro to your transactional email. It reads what happened to sent emails, from delivered to bounced, rejected, opened or clicked, with the SMTP response, the suppression list, templates, sender domains with DKIM and return-path status, this cycle's quota and rates, sending history and subaccounts. When asked, and once an administrator has granted the action by name, it can send an email to real people, billed against the quota, suppress or unsuppress an address, add, change or delete a template and re-check a sender domain. Email bodies in the activity log are never returned.
In Memtro
What you can do with SMTP2GO in Memtro
Ask in plain English from chat, your editor, a scheduled job or your own agent. The model picks the right SMTP2GO tool, reads what it needs, and answers with the source cited.
What it does
- 01Searches email activity in a time window, one row per event, with recipient, sender, subject, SMTP response and the reason for a bounce or rejection
- 02Checks whether an address or domain is suppressed and why, or lists the suppression list for a window
- 03Lists templates and reads one with its subject, variables and bodies cut short, and lists sender domains with DKIM and return-path status
- 04Reads this billing cycle's quota used and remaining with bounce, spam and unsubscribe rates, sending history grouped by sender, user or domain, and subaccounts
- 05When asked and granted, sends an email to real people, which cannot be recalled and counts against the billed quota, and suppresses an address or lifts a manual or bounce suppression
- 06When asked and granted, adds, changes or deletes a template, after which sends that use a deleted one fail, and asks SMTP2GO to re-check a sender domain's DNS now
Acts when asked
When you ask it to
These tools change something in SMTP2GO. The model is told to use them only when you ask for exactly that, and an administrator grants each one by name to the teams that may use it; a personal connection acts only after its owner allows it.
- 01Send an email (billed against the monthly quota and delivered to real people)
- 02Suppress an email address or domain (SMTP2GO then refuses to send to it)
- 03Remove a manual or bounce suppression from an address
- 04Add an email template
- 05Change an email template
- 06Delete an email template (sends that use it start failing)
- 07Re-check a sender domain's DNS verification
Events
When it happens
Turn events on in the connection's Events tab on the Connections page, choose the kinds you want, and Memtro registers its address with SMTP2GO for you. Each event can start a job, with the event as its input. SMTP2GO sends a secret with every delivery, and one without it is refused.
Events and webhooks- 01Email accepted and being processed
- 02Email delivered
- 03Email opened
- 04Link in an email clicked
- 05Email bounced
- 06Email marked as spam
- 07Recipient unsubscribed
- 08Recipient resubscribed
- 09Email rejected
In practice
Ask it like you would a colleague
Once SMTP2GO is connected, these are the kinds of things people ask. Plain questions, no syntax. If the answer lives partly in another system you have connected, Memtro looks there too.
SMTP2GO + MemtroDid yesterday's invoice email to Northwind get delivered?
Why did emails to bigco.example bounce this week?
How much of this month's quota have we used?
Is our sending domain's DKIM verified?
Remove the bounce suppression on accounts@northwind.example
Unblocking a fixed address
Dan Fletcher, support lead at Northwind, said a customer's mailbox was working again and asked Memtro to stop blocking it. Memtro lifted the bounce suppression in SMTP2GO, so mail to that address is sent again. Nobody was notified.
Teams
Where it fits
The teams that lean on SMTP2GO most, a question each of them asks, and what they connect beside it.
- SupportAnswer tickets with the whole company behind youAgent, Team lead, Escalation owner, Head of support“Which VIP conversations have been waiting more than a day?”Used alongside Help Scout, HubSpot, Postgres, Xero, Stripe and 8 more.
- SalesWalk into every call briefedAccount executive, Account manager, Sales leader, Sales operations“Brief me on BigCo before the 3pm renewal call”Used alongside HubSpot, Help Scout, Xero, Gmail, Google Calendar and 6 more.
- LeadershipOne question across the whole companyFounder, Chief executive, Department head, Board member“What happened with our top ten accounts this week, and is anything at risk?”Used alongside HubSpot, Help Scout, Xero, Stripe, Linear and 6 more.
- OperationsMonitors and digests that run themselvesOperations lead, Analyst, Team manager, Administrator“List my jobs”Used alongside Help Scout, Stripe, Xero, Postgres, ShipEngine and 8 more.
Better together
Works with
A record in SMTP2GO is rarely the whole story. Connect the systems that hold the rest and Memtro checks them together, then remembers what it learned so the next question starts further along.
- CRM and salesSMTP2GO with HubSpotContacts, companies, deals and tickets, with the rest of the company's memory attached.
- CRM and salesSMTP2GO with SalesforceAsk your CRM questions in plain English, down to the SOQL.
- CRM and salesSMTP2GO with Twenty CRMObjects, fields and records from the open-source CRM, and records it can create and change when you ask.
- SupportSMTP2GO with Help ScoutAI that reads your support conversations and cross-references the customer everywhere else.
- SupportSMTP2GO with ZendeskEvery ticket, reply and internal note, ready to be asked about.
- SupportSMTP2GO with IntercomCustomer conversations and the people behind them, in your company memory.
- Work managementSMTP2GO with JiraJQL search, issue details and projects from Jira Cloud.
- Work managementSMTP2GO with Clio ManageAsk the matter: its client, its fee earner, the time on it and what is still unbilled.
- Work managementSMTP2GO with LinearIssues, projects and teams, synced hourly into memory.
Also in Email, calendar and chat
Using something else for the same job, or both? Each connector has its own tools; connect as many as you like.
AgentMail- Gmail
- Google Calendar
- Slack
- Outlook Mail
- Outlook Calendar
- Microsoft Teams
- Granola
Fireflies.ai- Zoom
- Calendly
- Gong
- Cal.com
- Google Meet
- Mattermost
- Postmark
SendGrid
Avoma- Mailgun
Missive
tl;dv
Grain
Fathom Video- Rocket.Chat
- Zulip
- Resend
- Vonage
ClickSend
OneSignal- Courier
Bird- Knock
MeetGeek- Novu
- Plivo
Sinch
Telnyx
Textmagic- Mailtrap
MailerSend
Infobip
Setup
How to connect
Connect withAPI key and optional region
- 1
In app.smtp2go.com, open Sending → API Keys → Add API Key and describe it as Memtro.
- 2
Under Permissions, tick the reads Memtro should use, and Email send, Suppression, Template or Sender domain verify only for the actions you want. Save and copy the key, which starts api-.
- 3
In Memtro, open Connections → SMTP2GO and paste it into API key. Set Region to your account's region if you know it.
- 4
Ask your first question: did yesterday's invoice email to Northwind get delivered?
Also works from
Chat in the dashboard, the OpenAI-compatible API, scheduled jobs, and any MCP client: Claude Code, OpenCode, Cursor, Claude Desktop. The SMTP2GO tools are the same everywhere.
FAQ
Questions
Can Memtro change anything in SMTP2GO?+
Only when you ask, and only what it has been granted: send an email (billed against the monthly quota and delivered to real people); suppress an email address or domain (SMTP2GO then refuses to send to it); remove a manual or bounce suppression from an address; add an email template; change an email template; delete an email template (sends that use it start failing); re-check a sender domain's DNS verification. Every other tool reads, searches or lists. The Connections page labels the tools that act, an administrator grants each one by name to the teams that may use it, and a personal connection acts only after its owner allows it.
Who can use a SMTP2GO connection?+
A personal connection serves only your own requests. A shared connection serves the organisation: everyone, or only the teams an admin chooses. Admins can always add shared connections; other members need the permission.
Does Memtro store my SMTP2GO data?+
Credentials are encrypted at rest. Tool results are cached briefly so agent loops do not repeat identical calls, and the facts the model extracts are saved to your organisation's memory with provenance (system, record and link) so they can be checked and superseded.
How do I connect SMTP2GO?+
API key and optional region. In app.smtp2go.com, open Sending → API Keys → Add API Key and describe it as Memtro.
Can SMTP2GO start a job?+
Yes. Turn events on in the connection's Events tab on the Connections page, choose the kinds you want, and Memtro registers its address with SMTP2GO for you. A job set to start "When an event arrives" then runs once for each matching event, with the event as its input. The run treats the event as outside data, never as instructions, and anything the run remembers is kept as unverified.
Connect SMTP2GO in a few minutes
Seven-day free trial, then one monthly price per organisation. Connectors, jobs and memory are never metered.