Integration
Connect BigMailer and FreeAgent
When New Contact fires in BigMailer, your agent runs Create Contact in FreeAgent, or New Bank Transaction in FreeAgent to Add/Update Contact in BigMailer. Describe the whole flow and it is built, tested on every scenario and kept running.
What the catalog holds today. Ask for anything missing and your agent reads the API documentation and adds it.
Build solutions, not workarounds.
What do you want BigMailer and FreeAgent to do together?
Ask the assistant
Connect your AI client
Give your AI client this address.
https://mcp.apiant.aiOne connection does both: ask your client to act in an app once, or have it build an automation that keeps running. Any client that takes a remote MCP server. Nothing to install. Create your free account, then sign in once in your browser.
Set it up in your client
Claude Code
Run this in the directory you want to work in.
claude mcp add --transport http -s project apiant-ai https://mcp.apiant.aiStart Claude Code there, approve the server, and sign in in the browser page it opens.
Claude Code guide (opens in a new tab)Claude, web and desktop
Open Customize, then Connectors, then Add custom connector, and paste the address. On Team and Enterprise an owner adds it first.
Setup guide (opens in a new tab)Cursor
Add the address to your MCP configuration as a server URL. Cursor signs you in in your browser.
Setup guide (opens in a new tab)Zed
Open Settings, then AI, then MCP Servers, then Add Server, then Add Remote Server.
Setup guide (opens in a new tab)Codex and the ChatGPT desktop app
Open Settings, then MCP servers, then Add server, and choose Streamable HTTP. From the terminal, Codex takes the address with its own add command and then signs you in.
Setup guide (opens in a new tab)Any other MCP client
Paste the address where the client asks for a remote MCP server URL, and name the server apiant-ai where it lets you. APIANT's skills reach the client over the same connection.
Setup guide (opens in a new tab)Example flows
What BigMailer and FreeAgent can do together
From BigMailer to FreeAgent
When New Contact in BigMailer
then Create Contact in FreeAgent
When New Contact in BigMailer
then Create Invoice in FreeAgent
From FreeAgent to BigMailer
When New Bank Transaction in FreeAgent
then Add/Update Contact in BigMailer
When New Contact in FreeAgent
then Create a bulk campaign in BigMailer
Starting points drawn from the triggers and actions in the catalog today. Describe the flow you need, at any depth, and your agent builds it and tests every scenario before it ships.
Everything your agent can do with BigMailer and FreeAgent
Triggers and actions 7 triggers · 85 actions
Trigger
New ContactTriggered when a new contact is created in a BigMailer brand.
Action
Add/Update ContactCreates a BigMailer contact, or updates the existing contact with that email address. Custom fields for the selected brand can be mapped alongside list membership and unsubscribe settings.
Action
Create a bulk campaignCreates a bulk email campaign in a BigMailer brand — name, subject, sender, content, recipient lists, tracking and optional schedule.
Action
Create an RSS campaignCreates an RSS-to-email campaign in a BigMailer brand: watches a feed URL and emails new items on the schedule you choose.
Action
Create a transactional campaignCreates a transactional campaign in a BigMailer brand — the reusable email template and settings you later send one-off emails with.
Action
Create listCreates a new contact list inside a BigMailer brand.
Action
Create segmentCreates a segment in a BigMailer brand: a saved set of conditions that picks out the contacts you want to target.
Action
Create templateCreates a reusable email or landing-page template in a BigMailer brand.
Action
Delete contactDeletes a contact from a BigMailer brand, by contact ID or email address.
Action
Delete listDeletes a contact list from a BigMailer brand.
Action
Delete segmentDeletes a segment from a BigMailer brand.
Action
Delete templateDeletes a template from a BigMailer brand.
Action
Get brandReturns one BigMailer brand: its name, default sender, bounce settings, contact count and engagement stats.
Action
Get bulk campaignReturns one bulk campaign from a BigMailer brand, including its content, recipients and send statistics.
Action
Get contactReturns one BigMailer contact by ID or email address, including its custom field values.
Action
Get listReturns one contact list from a BigMailer brand.
Action
Get RSS campaignReturns one RSS campaign from a BigMailer brand, including its feed URL, schedule and content.
Action
Get segmentReturns one segment from a BigMailer brand, including the conditions that define it.
Action
Get templateReturns one template from a BigMailer brand, including its HTML.
Action
Get transactional campaignReturns one transactional campaign from a BigMailer brand, including its content and send statistics.
Action
List brandsLists the brands in your BigMailer account.
Action
List bulk campaignsLists the bulk campaigns in a BigMailer brand.
Action
List contactsLists the contacts in a BigMailer brand, optionally limited to one list.
Action
List listsLists the contact lists in a BigMailer brand.
Action
List RSS campaignsLists the RSS campaigns in a BigMailer brand.
Action
List segmentsLists the segments in a BigMailer brand.
Action
List sendersLists the sending identities in a BigMailer brand.
Action
List templatesLists the templates in a BigMailer brand.
Action
List transactional campaignsLists the transactional campaigns in a BigMailer brand.
Action
Update a bulk campaignUpdates an existing bulk campaign in a BigMailer brand. Only the fields you fill in are changed.
Action
Update an RSS campaignUpdates an existing RSS campaign in a BigMailer brand. Only the fields you fill in are changed.
Action
Update a transactional campaignUpdates an existing transactional campaign in a BigMailer brand. Only the fields you fill in are changed.
Action
Update brandUpdates an existing BigMailer brand — its name, default sender name and email, website URL, unsubscribe text, bounce thresholds, contact limit and logo. Only the fields you fill in are changed.
Action
Update listRenames an existing contact list inside a BigMailer brand.
Action
Update segmentUpdates an existing BigMailer segment — its name, match operator (all/any) and its list of conditions. Only the fields you fill in are changed.
Action
Update templateUpdates an existing BigMailer template — its name, type, HTML content and account-wide sharing. Only the fields you fill in are changed.
Trigger
New Bank TransactionTriggers when a new transaction appears in a FreeAgent bank account.
Trigger
New ContactTriggers when a new contact is created.
Trigger
New InvoiceTriggers when a new invoice is created.
Trigger
New or Updated ContactTriggers when a contact is created or changed in FreeAgent.
Trigger
New or Updated TimeslipTriggers when a timeslip (time entry) is created or edited in FreeAgent.
Trigger
New ProjectTriggers when a new project is created.
Action
Convert Estimate to InvoiceConverts an estimate into an invoice, marking the estimate as Invoiced and returning the URL of the new invoice.
Action
Create BillCreates a bill from a supplier contact in FreeAgent, with its line items, and returns the new bill.
Action
Create ContactCreate a new contact.
Action
Create Credit NoteCreates a draft credit note for a FreeAgent contact, with optional line items.
Action
Create EstimateCreates a new estimate, quote or proposal in FreeAgent for a contact or project, optionally with line items.
Action
Create ExpenseCreates an expense claim in FreeAgent for a user, with its category, date, amount and sales tax details.
Action
Create InvoiceCreate an invoice for a contact.
Action
Create Mileage ClaimCreates a mileage claim (a mileage expense) for a user in FreeAgent and returns the new claim.
Action
Create NoteAdds a note to a FreeAgent contact or project.
Action
Create Price List ItemCreates a price list item in FreeAgent that can be added to invoices and estimates.
Action
Create ProjectCreate a project for a contact.
Action
Create TaskCreates a task under a FreeAgent project.
Action
Create TimeslipCreate a timeslip (time tracking entry).
Action
Delete ContactDelete a contact by id.
Action
Delete InvoiceDeletes an invoice from FreeAgent.
Action
Delete TimeslipDeletes a timeslip from FreeAgent.
Action
Explain Bank TransactionExplains a bank transaction in FreeAgent by creating a bank transaction explanation (categorising it, or matching it to an invoice, bill, transfer or user payment). Returns the created explanation.
Action
Find Contact by EmailFinds FreeAgent contacts whose email or billing email matches the given address.
Action
Get BillReturns a single bill, including its line items, by its ID.
Action
Get ContactGet a single contact by id.
Action
Get Credit NoteReturns a single FreeAgent credit note, including its line items, status and totals.
Action
Get EstimateReturns a single FreeAgent estimate with its line items.
Action
Get ExpenseReturns a single FreeAgent expense by its ID, including amounts, category, claimant and attachment details.
Action
Get InvoiceGet a single invoice by id.
Action
Get NoteReturns a single note attached to a FreeAgent contact or project, including its text, author and timestamps.
Action
Get Price List ItemReturns a single price list item from FreeAgent by its ID.
Action
Get ProjectReturns a single FreeAgent project by its ID, including its contact, status, budget and billing details.
Action
Get TimeslipReturns a single FreeAgent timeslip, including its hours, date, user, project and task.
Action
List Bank AccountsReturns the bank accounts in your FreeAgent company, optionally filtered to standard, credit card or PayPal accounts.
Action
List Bank TransactionsReturns the bank transactions in a FreeAgent bank account, optionally filtered by date range, last update time, or explanation status.
Action
List BillsList bills.
Action
List CategoriesReturns all accounting categories for the company, grouped into admin expenses, cost of sales, income and general categories, optionally including sub accounts.
Action
List ContactsList contacts in FreeAgent.
Action
List Corporation Tax ReturnsReturns the company's Corporation Tax Returns, including amount due, payment and filing deadlines, and filing/payment status.
Action
List EstimatesList estimates.
Action
List ExpensesList expenses.
Action
List InvoicesList invoices.
Action
List ProjectsList projects.
Action
List Self Assessment ReturnsReturns the Self Assessment (income tax) returns for a FreeAgent user, including payments due and filing status.
Action
List TasksReturns the tasks in your FreeAgent account, optionally filtered by status, project or last-updated date.
Action
List TimeslipsList timeslips (time tracking entries).
Action
List UsersReturns the users on the FreeAgent account, optionally filtered to staff or advisors.
Action
Mark Invoice as CancelledMarks a FreeAgent invoice as cancelled, writing it off as unpaid. The invoice must be sent and past its due date.
Action
Mark Invoice as SentMarks a FreeAgent invoice as sent without emailing it. Can also re-open a cancelled invoice.
Action
Update BillUpdates an existing bill in FreeAgent — its supplier, reference, dates, rebilling, recurrence and bill items. Only the values you supply are changed.
Action
Update ContactUpdate an existing contact.
Action
Update ExpenseUpdates an existing expense in FreeAgent, changing only the details you supply.
Action
Update InvoiceUpdates an existing FreeAgent invoice's details, such as dates, contact, payment terms, comments and line items. Only the fields you fill in are changed.
Action
Update ProjectUpdates an existing FreeAgent project's name, client, status, budget, billing rate and dates. Only the fields you fill in are changed.
Action
Update TimeslipUpdates an existing timeslip in FreeAgent, changing its task, user, project, date, hours or comment. Fields left blank are not changed.
No trigger or action matches that. Ask your agent to add it: it reads the API documentation and builds what you describe.
Each app on its own
Reviews
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Questions
BigMailer and FreeAgent, answered
What can start an automation from BigMailer?
Any of BigMailer's 1 trigger in the catalog, including New Contact. Describe the moment in plain language and your agent picks the right one.
What can your agent do in FreeAgent when something happens in BigMailer?
Any of FreeAgent's 50 actions, including Create Bill, Create Contact, Create Credit Note and Create Estimate. Your agent maps the data both ways and tests every scenario before it ships.
Can it also run from FreeAgent to BigMailer?
Yes. When something happens in FreeAgent, your agent can act in BigMailer too. This page covers both directions: FreeAgent's triggers and BigMailer's actions are listed here as well.
Do I have to build a connector for BigMailer or FreeAgent?
No. Both are in the catalog with their triggers and actions. You describe the automation; your agent builds it, tests every scenario and keeps it running.
Can my AI client use BigMailer and FreeAgent without building an automation?
Yes. With your AI client connected to APIANT, ask it to do something in either app once and it runs that action on the spot. Ask for an automation and your agent builds it, tests every scenario and keeps it running. One connection covers both.
What happens when something fails?
Your agent works that out for you. It plans the failure paths along with the happy path, then tests every scenario before it ships.
Is there a free plan?
Yes. Every plan includes the agent, including free, and building from your own AI client spends no assistant credits.