Works with your whole stack
Bring your own keys for sending, AI, and email verification. Then sync audiences to ad platforms, link stores, and push events anywhere with signed webhooks.
send Email sending (BYOK)
Amazon SES
The most cost-effective high-deliverability sending: as low as $1 per 10,000 emails. Connect via API or SMTP with your AWS credentials.
SendGrid
Twilio SendGrid for scalable email delivery. Connect via API for full domain management or SMTP for simple relay.
Mailgun
Sinch Mailgun for developer-friendly email delivery. API and SMTP connections with automatic domain verification.
SparkPost
SparkPost (MessageBird) for enterprise-grade email infrastructure. API and SMTP with advanced analytics.
Elastic Email
Elastic Email for affordable bulk sending with built-in deliverability tools. API and SMTP connections.
Custom SMTP
Connect any SMTP server: your own mail infrastructure, transactional services, or corporate relay. Universal compatibility.
Gmail / Google Workspace
Send through your Gmail or Google Workspace account using OAuth. Ideal for low-volume personal newsletters.
blastengine
blastengine for high-performance Japanese email delivery. API and SMTP connections.
auto_awesome AI
OpenRouter
Unified gateway to every major AI model through a single API key. Powers the AI email builder, subject line generator, image tools, and analytics chat.
verified_user Email verification (BYOK)
ZeroBounce
Real-time and bulk email verification with AI scoring, abuse detection, and activity data. Industry-leading accuracy.
Reoon
Fast bulk and real-time email verification with disposable email detection. Affordable pay-as-you-go pricing.
Emailable
High-accuracy email verification with deliverability scoring. Real-time API and bulk list cleaning.
EmailListVerify
Bulk email list cleaning and real-time verification. Catches typos, disposable addresses, and spam traps.
Email List Validation
Bulk and real-time email validation with syntax, domain, and mailbox checks. GDPR compliant.
MyEmailVerifier
Real-time and bulk verification with role-based, disposable, and catch-all detection. Simple API integration.
Bouncify
Email verification with bounce prediction and risk scoring. Real-time and bulk processing.
NeverBounce
ZoomInfo-backed email verification with 99.9%+ deliverability guarantee. Bulk and real-time API.
VerifiedEmails
Bulk email list verification with detailed reporting on deliverable, undeliverable, and risky addresses.
Kickbox
Real-time email verification with sendex scoring. Developer-friendly API with high accuracy.
DeBounce
Email validation with disposable, role-based, and free-provider detection. Bulk and real-time API.
EmailChecker
Quick email verification with syntax, domain, and mailbox validation. Simple REST API.
Verify-Email.org
Lightweight single-email verification API. Domain and mailbox checks with minimal setup.
CloudVision
Cloud-based email verification with catch-all and disposable detection. REST API integration.
Cloudmersive
Multi-service API platform with email validation, DNS verification, and syntax checking. Pay-per-call pricing.
Bounceless
Affordable bulk email verification with syntax, domain, and SMTP checks. CSV upload and API access.
BulkEmailChecker
High-volume email list verification with detailed status codes. Bulk processing and single-check API.
outbox Destinations & exports
Webhooks
Signed, retried HTTP callbacks for delivery, opens, clicks, bounces, complaints, and subscribes. Wire EmailFlow events into any system.
Meta Ads
Sync audiences and publish Facebook & Instagram campaigns from your email segments.
Google Ads
Sync Customer Match audiences and manage Google Ads campaigns alongside your email program.
TikTok Ads
Sync audiences and run TikTok ad campaigns from the same segments you email.
LinkedIn Ads
Sync matched audiences and manage LinkedIn campaigns for B2B reach.
Mailchimp
Push finished templates straight into your Mailchimp account, rendered exactly as they send.
Klaviyo
Export templates into Klaviyo, ready to attach to your flows and campaigns.
HubSpot
Send designs into HubSpot as coded email templates, ready to use in Marketing Email.
Slack
Campaign and deliverability notifications in your team channels.
database Data sources
Stripe
New customers, paid and failed invoices, subscription changes. Stripe lifecycle events as automation triggers with payload merge tags.
Shopify
Orders, fulfillments, new customers, and abandoned checkouts from your Shopify store as automation triggers and abandoned-cart flows.
WooCommerce
Connect your WooCommerce store as a website source: sync products into ad catalogs and power store-aware campaigns.
Typeform
Grow lists from Typeform responses with field mapping.
Supabase
Subscribe contacts from your Supabase tables and auth events.
palette Design
Figma
Import a Figma frame and let the AI recreate it as a fully editable, email-safe template.
passkey Auth & user management
Clerk
Sync your Clerk user base into audiences as accounts sign up.
Request an integration
Tell us which tool you want to connect and we will prioritize building it. Signed-in customers can request one straight from the in-app integrations page.