Integration
Connect MailUp and Rex
When New Email Message in List fires in MailUp, your agent runs Create Lead in Rex, or Appraisal Created in Rex to Create New Email Message in MailUp. 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 MailUp and Rex 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 MailUp and Rex can do together
From MailUp to Rex
When New Email Message in List in MailUp
then Create Lead in Rex
From Rex to MailUp
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 MailUp and Rex
Triggers and actions 18 triggers · 32 actions
- New Email Message in List
A new email message was created in the list. MailUp is a multi-list environment and messages are list-specific.
- New Group
New group added to the specified list. MailUp is a multi-list environment and groups are list-specific.
- New Recipient Subscribed
There is a new subscriber in the specified list. MailUp is a multi-list environment.
- New Recipient Unsubscribed
A recipient unsubscribed from the specified list. MailUp is a multi-list environment.
- Add list
Create a new list. POST Console/List
- Add Recipient to Group
Add recipient to the specified group on the list.
- Add Recipient to List
Adds a new recipient to the specified list as a subscriber.
- Create New Email Message
Create a new email message on the specified list.
- Create New Group
Add a new group to the specified list. MailUp is a multi-list environment.
- Delete email message
Delete an email message. DELETE Console/List/{id_List}/Email/{id_Message}
- Delete group
Delete a group in a list. DELETE Console/List/{id_List}/Group/{id_Group}
- Delete list
Delete a list. DELETE Console/List/{id_List}
- Get email message
Retrieve email message details. GET Console/List/{id_List}/Email/{id_Message}
- Get list
Retrieve list details by id. GET Console/List/{id_List}
- List email messages
Retrieve email messages of a list. GET Console/List/{id_List}/Emails
- List Email Message Sendings
lists the sendings (send tasks, with recipients count and status) created for an email message.
- List Group Recipients
Lists the recipients in a MailUp group (GET Console/Group/{id_group}/Recipients), with id, email, name and personal data fields.
- List groups
Retrieve groups of a list. GET Console/List/{id_List}/Groups
- List lists
Retrieve the console's lists. GET Console/List on services.mailup.com/API/v1.1/Rest/ConsoleService.svc
- List subscribed recipients
Retrieve subscribed recipients of a list. GET Console/List/{id_List}/Recipients/Subscribed
- Remove recipient from group
Unsubscribe a recipient from a group. DELETE Console/Group/{id_Group}/Unsubscribe/{id_Recipient}
- Remove Recipient From List
This method unsubscribe the given recipient from the specified list.
- Send Message to Email Address
Sends the specified message (previously created in MailUp in the specified List) to the email address specified.
- Send Message to Group
Send a message to a predefined group in the specified list.
- Send message to list
Send an email message to all recipients of a list. POST Console/List/{id_List}/Email/{id_Message}/Send
- Unsubscribe recipient from list
Unsubscribe a recipient from a list. DELETE Console/List/{id_List}/Unsubscribe/{id_Recipient}
- Update email message
Modify an email message. PUT Console/List/{id_List}/Email/{id_Message}
- Update group
Modify a group in a list. PUT Console/List/{id_List}/Group/{id_Group}
- Update list
Modify details of a list. PUT Console/List/{id_List}
- Appraisal Created
Triggers when a new appraisal is created in Rex.
- Calendar Event Created
Triggers when a new calendar event is created in Rex.
- Calendar Event Updated
Triggers when a calendar event is updated in Rex.
- Contact Created
Triggers when a new contact is created in Rex.
- Contact Updated
Triggers when a contact is updated in Rex.
- Contract Created
Triggers when a new contract is created in Rex.
- Contract Status Changed
Triggers when a Rex contract's status changes.
- Lead Created
Triggers when a new lead is received or created in Rex.
- Listing Created
Triggers when a new listing is created in Rex.
- Listing Published
Triggers when a Rex listing is published.
- Listing Sold/Leased
Triggers when a Rex listing is marked as sold or leased.
- Listing Updated
Triggers when a listing is updated in Rex.
- Note Created
Triggers when a new note is created in Rex.
- Property Updated
Triggers when a property is updated in Rex.
- Add Tag
Adds a tag to a Rex contact.
- Assign Lead
Assigns an existing Rex lead to a user.
- Create Lead
Creates a lead in Rex, optionally linked to a contact and listing and assigned to a user.
- Create Match Profile
Creates a buyer/renter match profile for a Rex contact.
- Create Note
Creates a note in Rex, optionally linked to a contact.
- Create Reminder
Creates a reminder in Rex for the record owner, optionally linked to a contact.
- Search for Full Calendar Event
Returns the latest full data for a Rex calendar event by its ID.
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
MailUp and Rex, answered
What can start an automation from MailUp?
Any of MailUp's 4 triggers in the catalog, including New Email Message in List, New Group, New Recipient Subscribed and New Recipient Unsubscribed. Describe the moment in plain language and your agent picks the right one.
What can your agent do in Rex when something happens in MailUp?
Any of Rex's 7 actions, including Create Lead, Create Match Profile, Create Note and Create Reminder. Your agent maps the data both ways and tests every scenario before it ships.
Can it also run from Rex to MailUp?
Yes. When something happens in Rex, your agent can act in MailUp too. This page covers both directions: Rex's triggers and MailUp's actions are listed here as well.
Do I have to build a connector for MailUp or Rex?
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 MailUp and Rex 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.