Name: Send16
Author: com.send16

Tools observed via MCP handshake

whoami — Verify the API key and return the authenticated workspace: name, plan, email quota (used/limit), and owner. Call this first to confirm the key works before send
send_email — Send a transactional email through Send16. Provide `html`, `text`, or both (text-only is fine for OTPs/receipts/alerts). `from_email` must belong to a domain th
send_campaign_test — Send a test email for an existing campaign to preview how it will look in recipients' inboxes. Confirm the test address with the user first. Can be refused with
create_campaign — Create a new email campaign as a draft: optionally with full HTML content and recipients (exactly ONE of audienceIds / segmentId / contactIds / tagIds / sendToA
design_email_template — Use AI to generate a complete email HTML template based on a description. Returns ready-to-use HTML that can be sent or used in campaigns.
list_campaigns — List email campaigns, newest first. Use `search` to find a past campaign the user describes vaguely ('the invite one', 'that July newsletter'); it matches name
create_contact — Add a single new contact, optionally straight into audiences and/or with tags; e.g. 'add this person from my email into the newsletter list'. Contacts are subsc
search_contacts — Search contacts by email address or name. Returns matching contacts with their tags and subscription status.
list_contacts — List all contacts with optional filtering by subscription status and tag. Supports pagination.
import_contacts — Bulk import contacts from CSV data (min column: email), optionally straight into audiences and/or with tags. This is the tool for cross-app flows; e.g. pulling
list_domains — List all sending domains configured in your Send16 workspace, including their verification status and DNS records.
check_domain_health — Check the DNS health of a specific domain, including DKIM, SPF, DMARC, and MX record verification status. Triggers a fresh DNS lookup.
get_campaign_stats — Get detailed performance statistics for a specific campaign including open rate, click rate, bounce rate, and delivery metrics.
get_deliverability_status — Get your workspace's deliverability summary: sending reputation, domain authentication status, and recent bounce/complaint health. (Deliverability Hub plan feat
list_automations — List all automations in the workspace, including draft/active/paused status and trigger types.
get_automation — Get a single automation by ID, including its trigger, steps, and current status.
enroll_in_automation — Manually enroll a contact in an active automation. The automation must be in 'active' status. Use send_event for event-driven enrollment. Confirm with the user
send_event — Fire a custom event for a contact. Automations whose trigger is `{type:'custom_event', eventName:'<name>'}` will enroll the contact and start running. Payload i
list_templates — List starter-gallery email templates available to every workspace.
save_template — Save an email design as a reusable template in the user's Send16 workspace. Use this when the user has designed an email (for example in a Claude artifact) and
list_workspace_templates — List the templates saved in the user's own Send16 workspace (their template library, including ones saved with save_template). For the shared starter gallery us
send_template_test — Send a preview of a saved workspace template to one email address, so the user can see it in a real inbox. It arrives from noreply@send16.com with a small 'Temp
get_template — Get a single starter template by ID, including its EmailContent JSON.
render_email_content — Compile an EmailContent JSON object (the shape used by the Send16 builder + templates) into HTML using the platform's authoritative renderer. Returns the exact
add_domain — Register a new sending domain. Returns the DNS records the user must add to their DNS provider, after which they should call check_domain_health to verify.
pre_send_review — Run an AI pre-send review on an email's HTML before sending. Surfaces tone issues, broken links, missing alt text, spam triggers, and accessibility problems.
generate_email_from_url — Scrape a URL (e.g. a launch blog post or product page) and generate an email draft from its content. Returns subject, preview text, and HTML body.
list_messages — List messages from the unified send log (transactional + campaign). Filter by recipient, sender, status, date range, or source.
get_message — Fetch a single message with its full event timeline (created → sent → delivered → opened → clicked → ...).
get_message_events — Get just the delivery event timeline for a message: no body or recipient details.
list_convos — List inbox conversations. Filter by state, mailbox, label, screener status, or full-text search. Send16's unified inbox combines transactional reply threading w
get_convo — Get a single conversation with its full thread of posts (incoming + outgoing).
send_reply — Reply to an inbox conversation. The reply is sent from the original recipient address (the alias the convo arrived on) and threaded back to the contact. Show th
mark_convo_read — Mark a conversation as read for the current viewer.
update_convo — Update conversation status (open/closed/archived/snoozed) or assignee.
add_convo_note — Add a private internal note on a conversation. Notes are visible only to workspace members.
screener_decide — Decide a pending screener conversation (first-time sender). 'allow' lets future emails through, 'reject' blocks, 'cold' marks as cold outreach.
list_inbox_counts — Get unread/total counts per category and label for the inbox sidebar (newsletter, transactional, marketing, calendar, social, cold).
list_topics — List subscription topics. Topics are granular categories contacts can subscribe to (e.g. 'product-updates', 'weekly-digest'). Campaigns and automations can be g
create_topic — Create a new subscription topic. Contacts opt into topics individually via the preference center.
update_topic — Update a subscription topic (name, description, default).
delete_topic — Delete a subscription topic. All subscribers will be detached.
list_actions — List Actions. Actions fire a transactional template when a custom event arrives: simple 'event_name → template' pairings, lighter than full automations.
get_action — Get a single Action with its trigger config and template binding.
create_action — Create an Action that maps an event name to a transactional template. Each matching event sends one email to the contact.
update_action — Update an Action (toggle enabled, change template, change event name).
delete_action — Delete an Action.
list_audiences — List audiences (lists). An audience is a static, manually-managed group of contacts.
create_audience — Create a new audience.
add_contacts_to_audience — Add contacts (by ID) to an audience.
remove_contact_from_audience — Remove a contact from an audience.
delete_audience — Delete an audience (list). Contacts are not deleted; only the list and its memberships are removed.
list_segments — List dynamic segments. Segments compute their members from a filter expression at send time.
preview_segment — Preview the contacts that match a segment without sending.
list_events — List the workspace's events (meetups, workshops, conferences) with registered, attended and no-show counts and each event's public registration page.
get_event_insights — Who registered and who came for one event: counts, no-show rate, where people came from (city and state), first-timers vs returning, organisations and registrat
list_event_registrations — List the people registered for an event, with status (registered, waitlisted, attended, no_show, cancelled), company, city and check-in time.
register_for_event — Register someone for an event. They get the event's confirmation email with their QR ticket unless the organiser switched it off, so confirm the person and the
check_in_attendee — Check a registrant in at the door (or undo it). Use the registration ID from list_event_registrations.
update_contact — Update a contact's profile fields, custom fields, or subscription state.
delete_contact — Delete a contact and all associated events. Irreversible.
get_contact_timeline — Get a contact's full activity timeline: emails received, events fired, opens, clicks, automation enrollments, topic changes.
get_contact_health_score — Get a contact's 0-100 health score based on recent engagement (opens, clicks, replies).
send_broadcast — One-shot broadcast: create a campaign and immediately schedule it to send, in a single call. Pass either an audienceId, segmentId, topicId, or fully-qualified f
schedule_campaign — Schedule (or send immediately) an existing draft campaign to an audience/segment/topic. Before calling, confirm with the user: show them the recipients (or the
update_campaign — Update a draft campaign: name, subject, preview text, sender info, HTML content, and/or recipients. Retarget with exactly ONE of audienceIds / segmentId / conta
pause_campaign — Pause a sending campaign. Already-sent messages are unaffected; remaining sends halt.
resume_campaign — Resume a paused campaign. Confirm with the user first: the remaining recipients start receiving the campaign straight away. The sending limits and pauses descri
duplicate_campaign — Duplicate a campaign (template, content, and settings) as a new draft; works on sent campaigns too, so this is the way to re-use a past campaign's design. Optio
delete_campaign — Delete a draft campaign. Sent campaigns cannot be deleted (only archived).
preview_campaign_recipients — Preview the recipient set for a campaign before sending. Returns count + sample list.
activate_automation — Activate an automation. New events matching its triggers will start enrolling contacts. Confirm with the user first: once active it can start emailing contacts
pause_automation — Pause an automation. Existing enrollments freeze in place; no new contacts enroll.
get_automation_stats — Get aggregate analytics for an automation: total enrollments, completed, exited, open/click rates per step.
list_automation_enrollments — List active and historical enrollments for an automation.
list_workspaces — List workspaces the authenticated user has access to (owner or member).
get_workspace — Get the current workspace (the one the API key belongs to).
get_brand — Get the workspace's brand settings: colors, logo, fonts, and the DESIGN.md spec injected into AI generation prompts.
update_brand — Update workspace brand settings. The designSpec field is a Markdown DESIGN.md document fed into AI generation system prompts; use it to encode voice, do/don't l
get_workspace_usage — Get the current month's send count, contact count, and plan limits.
list_suppressions — List suppressed email addresses (bounces, complaints, unsubscribes, manual).
add_suppression — Add an email to the suppression list. Future sends to this address will be blocked.
remove_suppression — Remove an email from the suppression list. Use only when you've confirmed the recipient wants to receive mail again.
list_webhooks — List configured outgoing webhooks (your endpoints that Send16 POSTs delivery events to). Outgoing webhooks are a plan feature.
create_webhook — Register an outgoing webhook endpoint. Send16 POSTs event JSON to this URL with an HMAC-SHA256 signature. Outgoing webhooks are a plan feature.
delete_webhook — Delete an outgoing webhook endpoint.
regenerate_webhook_secret — Rotate the HMAC signing secret for an outgoing webhook endpoint. Returns the new secret once.

when	check	result	http	latency	detail
4 h ago	mcp initialize	ok	200	51 ms	server send16 0.5.16 · protocol 2025-06-18 · 87 tools
11 h ago	mcp initialize	ok	200	51 ms	server send16 0.5.16 · protocol 2025-06-18 · 87 tools

Send16

This record is unclaimed

Evidence

What the publisher says

Capabilities

Where this record came from