Free tools for GTM teams

Paste a 550 5.1.0 address rejected bounce to see if a block list, a stale Outlook entry, or an SPF error caused it.

Paste a 550 5.1.1 recipient rejected bounce to see what Gmail, Microsoft 365, or Yahoo meant and whether a typo caused it.

Paste a 550 5.1.10 bounce from Microsoft 365 to tell a wrong address from a broken forward or backscatter, and see the fix for each.

Paste a 550 5.7.0 DMARC policy violation bounce to see which server refused it, who has to act, and the fix.

Paste a 550 5.7.0 message size violation bounce to see which server set the limit and how to get your message through.

Paste a 550 5.7.1 Gmail bounce to see whether it was flagged as spam, a low reputation, or a recipient's policy, and who has to act.

Paste a 550 5.7.233 bounce to confirm it is the external recipient limit, see what counts toward it, and learn when sending comes back.

Paste a 550 5.7.26 unauthenticated email bounce to see which of Gmail's three reasons you got and which sender to set up.

Paste a 550 5.7.367 bounce to see why the next server would not relay it and which setting an admin changes to stop it.

Paste a 550 5.7.509 bounce from Microsoft 365 to see why your From domain failed DMARC and which record or service to fix.

Paste a 550 5.7.703 bounce to see why nobody got the email, who in your company can lift the block, and what to resend now.

Paste the error to learn how to fix 554 5.7.1 relay access denied: which server refused it and the setting to change.

A software affiliate program directory check: which directories took our SaaS program, what listing costs, and what happened.

Take the quiz: guess whether each cold email reads like a human or an AI draft, see what gives it away, and share your score.

AI Overview citations for enrichment and outbound searches: which sites Google leans on, how each moved, and where to publish.

The best AI tool directories by outcome: which listed our product for free, which keep it waiting, and which wanted a badge or a fee.

Pick a buyer and a goal to get B2B cold email templates: opener lines with the bracket to fill, and the sequence to send them in.

Pick a date and your time zone to see when the best day to launch on Product Hunt starts and ends for your team.

Paste a bounce to learn how to fix 550 5.7.1 or any other code: what the server meant, who has to act, and what to change.

Paste addresses and this bulk MX lookup sorts them by mail host: Google Workspace, Microsoft 365, a security gateway, or another host.

Pick a buyer intent signal, such as a job change, an open role or a launch, and see what it tells a seller and what to discard.

Paste an email to see how to tell if it was written by AI: each phrase that matches a public rule is marked, with its source.

Is cold email legal where your prospects live? Pick their countries to see each law's consent rule, footer, and the source behind it.

Is cold email legal in Canada under CASL? See when a published business address counts as consent, with the act's text behind it.

Paste every step of a cold email outreach sequence to see what a prospect would notice: copied lines, unfilled blanks, links and shouting.

Pressing it sends an invitation: see what Pending means, whether to press again, and what to do while you wait, from LinkedIn's help pages.

Type any domain to check how its DMARC record reads: the policy, each tag in plain words, and the default for every tag left out.

Find the domain name of a local business from its company name, see what the lookup needs and its price, and go back from a domain.

Paste phone numbers and pick a default country to get each one back in E164 format, the plus-and-digits form, ready to copy.

Start from a profile link and see how to get someone's work email: the two steps it takes, what each one needs and its price.

Paste a message's headers into this free email header analyzer online to see the sending service, the route, and SPF, DKIM, and DMARC.

Drop a lead CSV into this email list cleaning tool to find duplicates, typos, role addresses, and throwaway domains before you verify.

Paste Gmail's Show original text into this email header analyzer to see the route, the sending service, and each check's verdict.

Paste any address at your domain to see if its MX records point at Google Workspace, in the current form or the older aspmx one.

GTM engineer average salary from real job ads: each ad's stated pay, location, seniority and the tools it asks for, read weekly.

The clicks to get your HubSpot API key, the scopes to pick per object, and how to tell when you need an app instead.

See the HubSpot API limits for your account: burst, daily, search and batch caps from HubSpot's docs, beside any tool you look up.

Duplicates, ordering, retries and signatures in the HubSpot webhook API, each note checked against HubSpot's own developer pages.

If you accidentally ignored a LinkedIn invitation, see what Ignore did, whether the sender knows, and how to invite them yourself.

A LinkedIn account restricted for no reason given still has a cause: see the ones LinkedIn names and the way back it asks for.

How to do a boolean search in LinkedIn: type a job title, keep the spellings you mean, and copy a ready string.

LinkedIn's connection limit does not reset on a set day, so pick the notice you saw and see when LinkedIn says to send again.

There is no published LinkedIn daily connection limit, so get a daily pace from your account's age, network, and recent notices.

Every plan has a LinkedIn invitation limit and none has a published number: get a weekly and daily pace, and what counts against you.

Find out why an invitation was not sent in LinkedIn: pick what you saw and get LinkedIn's reason, and whether to wait or send once more.

Paste LinkedIn post links, one per line, and this date extractor tool gives each post's creation time, newest first, in your browser.

Paste a LinkedIn post's link to see its exact date and time, to the second, in your time zone and UTC, without opening LinkedIn.

Switch between free and Premium to see what moves: notes and InMail credits change, the LinkedIn connection request limit does not.

Start from a work or personal email to get the person's LinkedIn profile link, with their name and company to check the match.

LinkedIn publishes no weekly connection limit, so describe your account and get a weekly invitation plan with a source behind each step.

Pick what you see on the profile and get LinkedIn's own reason Connect is missing, whether one more look helps, and what to do instead.

See what the MX record for Office 365 is on your domain: paste any address there and read the host Microsoft gave it.

Start from a LinkedIn profile link to see how to find the person's direct or mobile phone number, what it needs and its price.

The exact clicks to your Pipedrive API key, the permission that can hide it, and what the token reaches once you copy it.

Work out what your plan allows: the Pipedrive API limits per company and per token, and what each endpoint costs, from Pipedrive's docs.

Alternatives to Product Hunt by outcome: what each board's free route asked of us, what it cost, and whether it listed us.

Plan how to launch on Product Hunt: pick a date and time zone, get your launch hours, the board's own rules, and what to prepare.

The best SaaS directories by outcome: where our product went live, how long the rest kept us waiting, and why we stopped at others.

Pick your plan to see every way LinkedIn documents to export leads from Sales Navigator, each with its source and the CRMs it names.

See the Sales Navigator search limit for leads and accounts in LinkedIn's own words, and paste a search link to list its filters.

LinkedIn's help page says you cannot export Sales Navigator leads to Excel or CSV on any plan: see its words and what it offers instead.

A Salesforce API key is the Consumer Key and Secret of an app you make in Setup: the clicks, the scopes and the editions that allow it.

Find your org's daily call allocation and long-running request cap in the Salesforce API rate limits, sourced to Salesforce's docs.

See the batches, records and query jobs your org gets each rolling day under Salesforce Bulk API limits, plus job and file sizes.

Look up the Salesforce REST API limits that decide how many records each call can read or write, from Salesforce's own docs.

What happens on no match, one match or several, and which field to match on: Salesforce upsert vs update, beside other CRMs.

Show HN on Hacker News from its own pages: what qualifies, what gets a post penalized, and how a year of posts did by hour.

Type a domain to count its SPF record lookups toward the limit, see which include costs the most, and know what to remove.

Type a domain into this free SPF record lookup tool to see every sender it allows, who each include belongs to, and the lookups it costs.

Type your versions, and this spintax generator writes them in the syntax your sending tool reads and checks every bracket.

Paste a status code 550 5.7.350 bounce to read the reply Microsoft 365 passed on and see what to check before you resend.

Enter the steps of the waterfall enrichment tools you compare, each with a hit rate and a price, and see coverage and cost per record found.

Find out why webhook signature verification fails: paste the raw body, secret and header from HubSpot v3 or another app and compare.

What is spintax: one line that holds several versions of your words, one picked per contact. See how each sending tool writes it.

Withdraw a LinkedIn invitation and that person is blocked for up to 3 weeks: see when to withdraw and what to do in the meantime.

Find your daily allowance and how many calls may run at once under the Zoho CRM API limits, plus bulk job sizes, from Zoho's docs.