Integration
Connect PostStack and Reply
When Contact Updated (instant) fires in PostStack, your agent runs Add contact list in Reply, or New Email Opened in Reply to Send an email in PostStack. 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 PostStack and Reply to do together?
Ask the assistant
Connect your AI client
Give your AI client this address.
https://mcp.apiant.aiAny 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 PostStack and Reply can do together
From PostStack to Reply
When Contact Updated (instant) in PostStack
then Add contact list in Reply
When New Contact (instant) in PostStack
then Get contact in Reply
From Reply to PostStack
When New Email Opened in Reply
then Send an email in PostStack
When New Emails Sent in Reply
then Add a contact in PostStack
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 PostStack and Reply
Triggers and actions 14 triggers · 47 actions
Trigger
Contact Deleted (instant)Fires when a contact is deleted (event: contact.deleted).
Trigger
Contact Updated (instant)Fires when a contact is updated (event: contact.updated).
Trigger
Email Bounced (instant)Fires when an email bounces (event: email.bounced).
Trigger
Email Delivered (instant)Fires when an email is delivered (event: email.delivered).
Trigger
New Contact (instant)Fires when a contact is created (event: contact.created).
Trigger
New Inbound EmailPolls for newly received inbound emails.
Trigger
New Sent Email (instant)Fires when an email is sent (event: email.sent).
Action
Add a broadcastCreate a new marketing broadcast.
Action
Add a contactCreate a new contact.
Action
Add a segmentCreate a new manual contact segment.
Action
Add a templateCreate a new email template.
Action
Add contacts to segmentAdd contacts to an existing segment.
Action
Add suppressionAdd an address to the suppression list.
Action
Cancel broadcastCancel an in-flight broadcast.
Action
Cancel emailCancel a scheduled or queued email before it sends.
Action
Delete a contactDelete a contact.
Action
Delete a templateDelete an email template.
Action
Get a contactFetch one contact by ID.
Action
Get a templateFetch one email template by ID.
Action
Get broadcastRetrieve one broadcast by its public id, including the HTML and text bodies that the list endpoint omits.
Action
Get emailFetch one sent or queued email by ID.
Action
Get email eventsGet the delivery event timeline for one email.
Action
Get inbound emailFetch one received inbound email by ID.
Action
Import contactsBulk-import a CSV list of contacts.
Action
List broadcastsList marketing broadcasts.
Action
List contactsList contacts in the account.
Action
List emailsList sent, queued, and scheduled emails.
Action
List inbound emailsList emails received via inbound parsing.
Action
List segmentsList contact segments.
Action
List suppressed addressesList addresses on the suppression list.
Action
List templatesList email templates.
Action
Send an emailSend a transactional email through PostStack.
Action
Send broadcastStart sending a broadcast to its recipients.
Action
Send emails in batchSend up to 100 emails in a single request.
Action
Update a contactUpdate an existing contact's fields.
Action
Update a templateUpdate an email template, creating a new version.
Action
Update emailReschedule a queued email's send time.
Action
Validate email addressCheck whether an email address is valid and deliverable.
Trigger
Inbox Category Set for ReplyTriggers when an email reply in Reply is given an inbox category, automatically or by a user.
Trigger
New Email OpenedTriggers when a contact opens a tracked email sent from Reply.
Trigger
New Emails SentTriggers when Reply sends an email from a sequence step.
Trigger
New Link ClickedTriggers when a recipient clicks a tracked link in an email sent from Reply.
Trigger
New Person BounceTriggers when an email sent from Reply bounces or is rejected by the recipient's mail server.
Trigger
New Person Opt OutTriggers when a contact opts out of outreach in Reply (unsubscribe link, manual opt-out, or marked Do Not Contact).
Trigger
Prospect FinishedTriggers when a contact's participation in a Reply sequence ends — completed, replied, bounced, opted out, or finished manually.
Action
Add contact listCreates a new contact list in Reply, optionally shared with your team.
Action
Add note to contactAdds a note to a contact's timeline in Reply.
Action
Add sequenceCreates a new sequence in Reply with its steps, schedule, sending accounts and settings.
Action
Create\Update PersonCreates a Reply contact, or updates the existing contact with the same email address.
Action
Delete contactDeletes a contact from your Reply account.
Action
Find contacts by criteriaReturns the contacts that match a search term and/or field rules, optionally scoped to a contact list, sequence or sequence step.
Action
Get contactReturns one Reply contact by its id, including profile details, owner, opt-out, call and meeting status, stage and custom fields.
Action
Get sequenceReturns one sequence in full: name, status, owner, schedule, settings, connected email and LinkedIn accounts, and its steps.
Action
List contact listsReturns the contact lists you own plus those shared with your team, optionally filtered by name.
Action
List contactsReturns your Reply contacts, optionally narrowed to one email address or LinkedIn profile URL.
Action
List inbox categoriesReturns the inbox categories you can file conversations under.
Action
List Sequence ContactsReturns the contacts enrolled in a sequence, with each contact's status, current step, added date, opt-out and call status.
Action
List sequencesReturns the sequences in your Reply account, optionally filtered by status, owner, folder, archive state or name.
Action
Mark as FinishedMarks one or more contacts as finished in every sequence they are in, so they receive no further sequence steps.
Action
Remove Person From CampaignRemoves a contact from a sequence so they stop progressing through it. The contact and their history stay in your Reply account.
Action
Send Test Webhook EventSends a test event from an existing Reply webhook subscription to its configured URL.
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
What our customers say
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Questions
PostStack and Reply, answered
What can start an automation from PostStack?
Any of PostStack's 7 triggers in the catalog, including Contact Updated (instant), New Contact (instant), New Inbound Email and New Sent Email (instant). Describe the moment in plain language and your agent picks the right one.
What can your agent do in Reply when something happens in PostStack?
Any of Reply's 16 actions, including Create\Update Person, Send Test Webhook Event, Add contact list and Add note to contact. Your agent maps the data both ways and tests every scenario before it ships.
Can it also run from Reply to PostStack?
Yes. When something happens in Reply, your agent can act in PostStack too. This page covers both directions: Reply's triggers and PostStack's actions are listed here as well.
Do I have to build a connector for PostStack or Reply?
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.
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.