Toukir's Email Toolbox

What it does

Cold email breaks in the same places every time — a broken SPF record, too many DNS lookups, a DMARC policy that enforces nothing, a domain quietly on a blocklist. No signup, no limits, no data stored. Most checks resolve straight from your browser.

Twenty-four free tools for cold email infrastructure: SPF, DKIM and DMARC checkers, bulk DNS audits, blacklist lookups and email header analysis. No sign-up.

106 free diagnostics for the infrastructure behind email and the web — authentication, deliverability, DNS, domains, certificates and cost. Lookups go from your browser straight to public resolvers. No queue, no logging, no account. These are the checks I run across whole fleets before touching a client’s setup. Several tools take a whole list of domains and return one table you can export. The diagnostics above are free and always will be. When the fix is bigger than a DNS record, this is the work I do. Mail landing in spam, replies gone quiet, or a domain suddenly blocked. I find the actual cause rather than guessing, and fix it. Sending domains, inboxes, authentication and warmup, built…from toukirahmed.com

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