MailSenpai

With this app, you can consult your campaigns, create new communications, schedule deliveries, read statistics, and work with your account data more quickly and easily. ChatGPT can help you transform simple requests into operational actions, such as preparing a campaign, checking the status of a delivery, or analyzing performance. MailSenpai Cold is designed for marketing teams, agencies, and companies looking to reduce manual work and gain more immediate access to the key features of their email platform. Sensitive actions, such as sending or unsubscribing, respect the permissions configured in the account and may require explicit confirmation before being executed. With MailSenpai Cold, you can use ChatGPT as an operational assistant to better manage your email marketing, maintaining control over your account settings, permissions, and data.

View in the ChatGPT registry

Integration type: Plugin
Verification status: Not applicable
Platform: ChatGPT
Category: Marketing
Primary Subcategory: Email & SMS Lifecycle Marketing Automation
Secondary Subcategories: None listed
Brand: MailSenpai
Access: Account required
First tracked: 2026-07-23
Tool count: 76
Geography: US

ChatGPT Plugin Discoverability Score

ChatGPT organic discovery is not live yet

MailSenpai is tracked in the ChatGPT Plugin registry. Public organic-discovery measurement is not live for ChatGPT yet, so there is no score to publish today.

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Primary Subcategory

Competing in ChatGPT Email & SMS Lifecycle Marketing Automation

View Category

Listed in alphabetical order

Primary Subcategory

ActiveCampaignOrganic discovery is pendingGet the score at launch

AivieOrganic discovery is pendingGet the score at launch

AWeberOrganic discovery is pendingGet the score at launch

BizgoOrganic discovery is pendingGet the score at launch

ConversionOrganic discovery is pendingGet the score at launch

MailSenpaiOrganic discovery is pendingGet the score at launch

Score explained

How the Discoverability Score works

Organic discovery scoring for MailSenpai on ChatGPT is not live yet. The score will use measured agent conversations when it launches.

InvisibleBuriedEmergingCompetitiveWinning

Organic discovery scoring is pending. Your Plugin score will appear on this scale when measurement goes live.

FoundDiagnostic

Whether Claude found your Plugin in connector search. It must be Found before it can reach the picker, but the score counts picker appearances—not search results.

PickedMain score

How often your Plugin appeared in the picker, or Claude invoked it directly, across contested conversations. This percentage is the Discoverability Score; the headline number is rounded.

PositionedDiagnostic

What position your Plugin appeared in when it was shown in the picker. This shows prominence, but it does not affect the score.

Read the full scoring methodology Recommended guideHow to get your Claude Connector organically discoveredFollow the practical steps agents use to find, shortlist, and choose your Connector.

Tools

76 tools agents can invoke

Move a scheduled campaign back to draft when supported by the MailSenpai API.
cancel_scheduled_campaign
Set a MailSenpai subscriber status to confirmed by UID. Use this to confirm an unconfirmed subscriber or resubscribe an unsubscribed subscriber. Sends details[status]=confirmed to the MailSenpai API.
confirm_subscriber
Find a subscriber by email and set its status to confirmed. Use this to confirm an unconfirmed subscriber or resubscribe an unsubscribed subscriber.
confirm_subscriber_by_email
Copy a list by list UID. This creates a duplicate list in MailSenpai.
copy_list
Copy/duplicate a campaign by campaign UID.
copy_campaign
Create a list. Provide data.general and data.defaults; optional data.notifications and data.company follow MailSenpai API format.
create_list
Create a MailSenpai campaign. Prefer status=draft for drafts. For pending-sending or actual scheduling, pass confirm_send=true and approval_reference if required by the plan. You may either pass a complete campaign object or the common flat fields.
create_campaign
Create a bounce record for a campaign. Requires bounces:write and canManageBounces=true.
create_campaign_bounce
Create a MailSenpai customer. This is an admin-level operation and requires customers:create, canManageCustomers=true and confirm_create_customer=true.
create_customer
Create a custom field. Provide data.type (for example text/dropdown), data.label and optional data.tag. The MCP normalizes the MailSenpai field payload and sends the field type in the API-required position.
create_list_field
Create a list segment. Send data with top-level name, operator_match and conditions. Conditions require field_id, operator_id and value; operator slugs such as not-contains are accepted and mapped automatically.
create_list_segment
Create a subscriber or update it if it already exists. Data must contain EMAIL.
create_or_update_subscriber
Create a campaign directly as pending-sending. Always requires confirm_send=true; may require approval_reference by plan.
create_scheduled_campaign
Create a subscriber in a list. Data must contain EMAIL and any custom fields.
create_subscriber
Bulk-create subscribers in one list. Each row must contain EMAIL. The customer plan maxBulkImportRows limit is enforced.
bulk_create_subscribers
Create a template. Provide template.name and template.content or template.archive; inline_css is optional.
create_template
Create/schedule a transactional email. Requires transactional:write and canSendTransactional=true. Email data follows MailSenpai API, including optional attachments with base64 data.
create_transactional_email
Permanently delete a list. Requires canDelete=true and confirm_delete=true.
delete_list
Permanently delete a campaign. Requires canDelete=true and confirm_delete=true.
delete_campaign
Permanently delete a custom field. Requires canDelete=true and confirm_delete=true.
delete_list_field
Delete a segment. Requires canDelete=true and confirm_delete=true.
delete_list_segment
Delete a subscriber by UID. Requires canDelete=true and confirm_delete=true.
delete_subscriber
Find and delete a subscriber by email. Requires canDelete=true and confirm_delete=true.
delete_subscriber_by_email
Permanently delete a template. Requires canDelete=true and confirm_delete=true.
delete_template
Delete a transactional email. Requires canDelete=true and confirm_delete=true.
delete_transactional_email
Alias for copying a campaign by campaign UID.
duplicate_campaign
Get one list by list UID.
get_list
Get one MailSenpai campaign by campaign UID.
get_campaign
Get aggregate MailSenpai statistics for a campaign.
get_campaign_stats
Get one custom field by field ID for a list.
get_list_field
Get a segment by segment UID for a list.
get_list_segment
Return the authenticated MailSenpai customer, roles, scopes, list restrictions and plan limits. Use this before write, send or delete actions.
get_my_mailsenpai_capabilities
Get one subscriber by subscriber UID in a list.
get_subscriber
Get one MailSenpai template by UID.
get_template
Get one transactional email by email UID.
get_transactional_email
List mailing lists visible to the authenticated customer.
list_lists
List blacklisted subscribers for a MailSenpai list.
list_blacklisted_subscribers
List bounces recorded for a campaign.
list_campaign_bounces
List MailSenpai campaigns, optionally filtered by list UID.
list_campaigns
List confirmed subscribers for a MailSenpai list.
list_confirmed_subscribers
List countries available in MailSenpai.
list_countries
List zones/states for a country ID.
list_country_zones
List available MailSenpai custom field types.
list_list_field_types
List custom fields for a MailSenpai list.
list_list_fields
List all supported segment condition operators.
list_segment_condition_operators
List segments for a MailSenpai list.
list_list_segments
List subscribers for a MailSenpai list. Status is optional.
list_subscribers
List subscribers belonging to a segment.
list_segment_subscribers
List MailSenpai templates.
list_templates
List MailSenpai transactional emails.
list_transactional_emails

MailSenpai FAQ

How do I improve a ChatGPT Plugin's discoverability?

The levers are the listing surface agents actually read: names, descriptions, keywords, tool metadata, and registry health. Which lever matters depends on where discovery breaks, which is what continuous measurement shows.

What are MailSenpai alternatives on ChatGPT?

As of 2026-08-14, MailSenpai competes with ActiveCampaign, Aivie, AWeber, Bizgo, Conversion, Flodesk, Intuit Mailchimp, Klaviyo, L Message（エルメ）, Life Analytics Mail, magnews, MailerLite, Nitrosend - AI Native Email, Notifly, Omnisend, OneSignal, Resend, Spoki, Systeme.io, Textmagic, VerticalResponse in ChatGPT Email & SMS Lifecycle Marketing Automation, ranked by public Discoverability Score.

Where is this profile measured?

This profile uses the geography attached to the latest public registry snapshot: US. Locale tags are intentionally omitted.