Free tools

Unlock your outbound with tools that actually help you ship campaigns.

Fix deliverability issues, tune your copy, and sanity-check volume. Every tool is built from real campaigns we run with customers.

Want these checks running automatically on every email + LinkedIn campaign?

Built for teams who need deliverability checks before every send

Use these checks before every send. If you are recovering from a deliverability hit, start with a reputation recovery strategy — then sanity-check whether a cheaper SendGrid-style delivery stack still makes sense for cold outbound at scale.

Browse tools by job-to-be-done:

Email Verifier

Check if an address is valid before you add it to a sequence.

Bounce prevention

Spam Word Checker

Scan copy for words that trip spam filters before you send.

SPF Record Generator

Generate a correct SPF record for your sending domains.

DKIM Record Generator

Create DKIM records to authenticate your cold email sends.

DMARC Record Generator

Set a baseline DMARC policy to protect your domains.

MX Records Checker

Verify MX records so mail can actually be delivered.

SPF DKIM Checker

Check SPF and DKIM records for your domain.

Blacklist Checker

Check if your domain is listed on major email blacklists.

Reputation health

Email Deliverability Checker

Run quick checks on your domain + inbox configuration.

Health snapshot

Inbox Placement Test

Send seed emails from your mailbox and see inbox vs spam placement.

Email Subject Line Tester

Score your subject lines for clarity, curiosity, and spam risk.

Spam Analyzer

Paste a full email and get instant feedback on deliverability risk.

Content analysis

Email Finder

Locate verified email addresses for your target accounts.

Email Signature Builder

Generate professional HTML email signatures with multiple templates.

Professional branding

SDR Team Size Calculator

Back into how many SDRs you need for your pipeline targets.

Capacity planning

Cold Email Revenue Calculator

Model revenue from replies, meetings, and close rates.

SuperSend Relay Blueprint

Get your exact Relay infrastructure plan (subdomains, senders, cost) for high-volume sending.

Infrastructure planning

Email Infrastructure ROI Calculator

Compare mailbox-based infrastructure vs. SuperSend Sequencer + Relay.

Infrastructure ROI

Further reading

Automate These Checks in Every Campaign

Get all these deliverability and copy checks running automatically on every email and LinkedIn campaign with SuperSend.

FAQs

Common questions about SuperSend plans, infrastructure, and getting started.

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