Build campaigns with AI, send through your own provider, target people by what they actually do, and fix links even after a campaign has gone out.
14-day free trial · No credit card required
Bring your own sending provider
K2Mailer builds, checks, and tracks your campaigns. Your own SMTP server or email provider delivers them. Connect one or several sending servers and keep your own sender reputation.
Mail leaves through your provider account, your IPs, and your authenticated domain, so your reputation stays yours.
Connect several sending servers and use them side by side, so you are never tied to a single provider account.
Set unlimited sending or a fixed hourly or daily limit that matches what your provider allows.
Add the callback URL K2Mailer shows you in your provider dashboard and bounces and complaints flow back into your reports and suppression list.
Set up SPF, DKIM, and DMARC for your sending domain so mailbox providers can verify who you are.
Your contacts, lists, templates, and campaign history stay in K2Mailer when you change or add a sending provider.
Highlights
The features that save the most time and prevent the most embarrassing mistakes.
Every campaign is checked for broken links, missing unsubscribe links, missing sender details, and sending-setup errors. Critical problems block the send; smaller warnings stay visible for you to review.
Spotted a wrong or broken link after sending? Change it once and every future click goes to the new address. No resend, no apology email.
Send two or more versions to a sample of your audience, let K2Mailer pick the winner by opens or clicks, and send the winner to everyone else automatically.
Send a campaign or start a drip sequence when someone joins a list, enters a segment, or reaches a date such as a signup anniversary.
Group contacts by who opened, didn’t open, or clicked, plus subscription date, source, and status. Stripe sync turns your customers into ready-made lists such as active subscribers, repeat buyers, and lapsed buyers.
Track deliveries, opens, clicks, unsubscribes, bounces, and spam complaints for every campaign, with country and city breakdowns and exports for your own reporting.
AI that stays in its lane
AI agent access (MCP)
Ask your AI assistant to pull last month’s stats, draft a campaign, or build a segment. It works inside K2Mailer through a secure connection, with guardrails it cannot switch off. Access uses secure OAuth sign-in, and you can revoke it at any time.
Describe the campaign you want and get a full draft in the normal editor, ready for you to review and change.
Get specific suggestions for your subject line and copy before you send. Every campaign also gets a free AI moderation check.
Content analysis only sends the subject and body to OpenAI. Names, email addresses, and other contact data stay in K2Mailer.
Full feature list
Click any feature to read how it works in the help center.
Write, check, test, and schedule campaigns with fewer surprises.
Keep every contact, list, and preference in one tidy place.
Reach people based on what they do, automatically.
Send through the provider you trust and protect your sender reputation.
See what happened after every send, and fix what needs fixing.
Connect your tools and AI agents, and control who can do what.
FAQ
The K2Mailer trial lasts 14 days and no credit card is required. You can build campaigns, import contacts, and try the pre-send checks before choosing a plan.
Build a campaign, connect your sending provider, and run the pre-send checks before you commit.
14-day free trial · No credit card required