Email marketing & newsletters
Buttondown tech stack
Buttondown is the last email platform you'll migrate to. We're focused on your success, not on bleeding you dry.
buttondown.email ↗Checked Sep 2026
Foundation
“Listed in their tool stack on Starter Story (platform)” — the maker, May 2023 ↗
“Listed in their tool stack on Starter Story (email)” — the maker, May 2023 ↗
On its website: DNS: pm-bounces.buttondown.email CNAME pm.mtasv.net source · Oct 2026 ↗
In its subprocessor list: Postmark | Email delivery and transactional email services source · Oct 2026 ↗
In its subprocessor list: Mailgun | Email delivery and transactional email services source · Oct 2026 ↗
On its website: DNS: resend._domainkey.buttondown.email TXT (record present); DNS: send.buttondown.email MX feedback-smtp.us-east-1.amazonses.com source · Oct 2026 ↗
On its website: DNS: s1._domainkey.buttondown.email CNAME s1.domainkey.u55835292.wl043.sendgrid.net; DNS: s2._domainkey.buttondown.email CNAME s2.domainkey.u55835292.wl043.send… source · Oct 2026 ↗
“Listed in their tool stack on Starter Story (stack)” — the maker, May 2023 ↗
Money
“Listed in their tool stack on Starter Story (payments)” — the maker, Jul 2024 ↗
In its subprocessor list: Stripe | Payment processing and billing source · Oct 2026 ↗
Shipping
“Listed in their tool stack on Starter Story (platform)” — the maker, Jul 2024 ↗
In its subprocessor list: Heroku | Legacy domain ingress and TLS termination source · Oct 2026 ↗
On its website: DNS: api.buttondown.email CNAME public-entrypoint-alb-faa324d-477338196.us-west-2.elb.amazonaws.com source · Oct 2026 ↗
In its subprocessor list: Amazon Web Services | Application hosting and cloud infrastructure source · Oct 2026 ↗
In its subprocessor list: Cloudflare | Content delivery network and security services source · Oct 2026 ↗
In its subprocessor list: Sentry | Error monitoring and performance tracking source · Oct 2026 ↗
Growth
“Listed in their tool stack on Starter Story (analytics)” — the maker, May 2023 ↗
In its subprocessor list: Google Workspace | Business productivity and collaboration tools source · Oct 2026 ↗
Other tools
Other
“Listed in their tool stack on Starter Story (platform)” — the maker, May 2023 ↗
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6 sharedRailsDevs4 sharedUpHexGive every Highlevel client a proven way to get leads. Build an agency-owned campaign library, customize it for every client, and launch without rebuilding the strategy from scratch.5 sharedemail us4 sharedcmsThe core Laravel CMS Composer package4 shared
8 sharedReputationStackerSee why 3,000+ businesses trust ReputationStacker for online reputation management and to improve customer experience. Get more reviews & customer feedback. Gain social proof. Drive growth for your business.6 sharedRailsDevs4 sharedUpHexGive every Highlevel client a proven way to get leads. Build an agency-owned campaign library, customize it for every client, and launch without rebuilding the strategy from scratch.5 sharedemail us4 sharedcmsThe core Laravel CMS Composer package4 shared