How many emails can I send?

K2Mailer supports high-volume campaign sending, including unlimited email sending on applicable plans. Deliverability safeguards and provider capacity still matter, so sending controls remain part of the workflow.

Is there a free trial?

Yes. You can start with a 14-day free trial and explore the platform before committing.

Does K2Mailer include automation and segmentation?

Yes. K2Mailer supports lists, reusable segments, individual-contact targeting, drip campaigns, triggers, and follow-up workflows so you can choose an audience without weakening consent or suppression rules.

PushWave is our web push notification solution for WordPress websites. It helps you grow subscribers, send campaigns, and track performance from a dedicated dashboard.

Can I use K2Mailer for a growing business?

Yes. K2Mailer is designed for growing teams that need clearer audience control, configurable sending infrastructure, compliance safeguards, and reporting as campaign volume increases.

Do you offer API access?

Yes. Scoped API keys support integrations for account, groups, lists, custom fields, contacts, and saved campaign content. API permissions can be limited to the resources an integration needs.

Compliance-first email marketing

Send with confidence.Not guesswork.

K2Mailer brings audience targeting, pre-send safeguards, deliverability controls, automation, AI assistance, and campaign analytics into one guided workflow.

Start free trial →Explore the platform

No credit card requiredLists, segments & contactsPre-send campaign checks

Campaign workspace

Preflight checks

Ready to schedule

Critical send checks are clear.

Ready

Audience

24.8k

Checks

7 / 7

Status

Ready

Campaign readinessLive checks

Sending server available

Passed

Sending domain configured

Passed

Audience eligibility

Passed

Unsubscribe mechanism

Passed

Next step

Schedule campaign

→

Guided workflow

Check before send

Illustrative K2Mailer workspace

Audience control

Lists, Segments, Contacts

Campaign safeguards

Preflight before scheduling

Deliverability

Domains, servers, suppressions

Operational visibility

Events, logs, analytics

Why K2Mailer

Built around the decisions that protect a send.

Cheap bulk sending is easy to copy. Operational trust is harder. K2Mailer keeps audience eligibility, recipient preferences, sending setup, campaign checks, and delivery signals close to the workflow where they matter.

Compliance-first sending

Recipient preferences, suppressions, bounces, complaints, and campaign checks stay visible in the send workflow.

Deliverability operations

Manage sending domains, servers, tracking configuration, throughput, verification, and suppression controls.

Audience intelligence

Work with canonical contacts, multi-list memberships, segments, and individual-recipient targeting.

AI with guardrails

Use AI to help create and review content while deterministic checks and human approval control sending.

The guided campaign workflow

Create → Target → Check → Deliver → Learn

A high-quality email operation is a sequence of controlled decisions. K2Mailer is designed to make those decisions easier to see and harder to skip.

01→

Create

Build campaign content with your normal workflow and optional AI assistance.

02→

Target

Choose Lists, Segments, or Individual Contacts with recipient eligibility enforced.

03→

Check

Run deterministic pre-send checks before critical scheduling decisions.

04→

Deliver

Control sending infrastructure, throughput, domains, and tracking configuration.

Learn

Review delivery, engagement, bounces, complaints, unsubscribes, and processing logs.

Platform capabilities

The controls that make K2Mailer different

Six connected areas cover campaign readiness, deliverability, audience targeting, AI assistance, consent-aware contact management, and campaign visibility.

COMPLIANCE-FIRST WORKFLOW

Pre-Send Safeguards

Run deterministic checks before scheduling so critical audience, content, tracking, and sending-setup problems are easier to catch before delivery starts.

Block critical send issues
Warnings stay visible for review

DELIVERABILITY CONTROL

Sending Infrastructure

Manage sending domains, sending servers, tracking configuration, throughput, bounce processing, complaints, and suppressions with operational visibility.

Domain and server readiness
Bounce, complaint and suppression controls

AUDIENCE TARGETING

Lists, Segments & Contacts

Schedule campaigns to lists, reusable segments, or selected individual contacts while K2Mailer keeps tenant ownership and recipient eligibility rules in the send path.

Three audience targeting paths
Consent-aware recipient eligibility

AI-ASSISTED CAMPAIGNS

AI With Human Control

Use AI to help create and improve campaign content while deterministic pre-send safeguards and the final scheduling decision remain under user control.

AI creation and focused editing
Separate content analysis and review

CONTACTS & CONSENT

Cleaner Audience Control

Manage canonical contact profiles across multiple list memberships, with per-list subscription state, double opt-in, suppression, and explicit global opt-out protections.

One contact across multiple lists
Per-list preferences and sticky protections

ANALYTICS & OPERATIONS

Campaign Visibility

Review delivery, opens, clicks, unsubscribes, bounces, complaints, processing logs, revisions, and exportable campaign statistics after a send.

Event-level campaign reporting
Revisions and exportable statistics

View all K2Mailer features →

Companion product

PushWave for WordPress web push

Add browser push notifications alongside your email program with subscriber growth, targeting, scheduling, and reporting.

Explore PushWave →

SUBSCRIBER GROWTH

Smart Opt-in Prompts

Soft + native prompt flow

CAMPAIGN CREATION

3-Step Campaign Wizard

Draft campaigns supported

TARGETING & SCHEDULING

Smarter Audience Control

Country, browser, device targeting

ANALYTICS & REPORTING

Delivery and Click Tracking

Views and clicks reporting

Pricing

Start simple. Add control as you grow.

Predictable entry points for teams that want to build a more disciplined email workflow.

Starter

$0/month

A clean entry point for evaluating the core campaign workflow.

✓Up to 10,000 emails/month
✓Core campaign tools
✓Basic analytics
✓Email support

Get started

Questions before you send?

Quick answers about K2Mailer, campaign volume, automation, API access, and the wider K2 product family.

Browse documentation →

Ready when you are

Build a more controlled email workflow with K2Mailer.

Start with the campaign workflow, audience controls, pre-send checks, and deliverability safeguards that fit the way serious email programs operate.

Start free trial →Talk to us