The free bulk email sender
with pro-level features

CAN-SPAM (U.S.) requires every bulk email to include a physical mailing address, a visible unsubscribe link, and accurate sender information. Unsubscribe requests must be processed within 10 business days. GDPR (EU) goes further – you need explicit consent before adding someone to your email list, and subscribers have the right to request deletion of their data at any time. Sender includes built-in compliance tools for both frameworks: automatic unsubscribe links, consent tracking, double opt-in support, and one-click subscriber data export.

Use a dedicated mass email service like Sender instead of a personal email client. Personal clients like Gmail and Outlook have strict daily sending limits – Gmail caps free accounts at 500 emails per day, and Outlook limits sends to 300 per day. A mass email service provides higher sending limits, deliverability infrastructure, analytics, and compliance features. The basic process is: build or import your subscriber list, create your email using a template or drag-drop builder, segment your audience, and schedule or send immediately.

No legitimate bulk email service offers truly unlimited free sends – any platform claiming this is either unreliable or violating anti-spam regulations. Sender's free plan offers the highest free sending limit among major platforms: 15,000 emails per month to up to 2,500 subscribers, with little to none feature restrictions on automation, segmentation, or analytics. Emails sent on the free plan include a "Powered by Sender" footer; removing it requires a paid plan starting at $7/month. If you need higher volume, Sender's paid plans start at $7/month for 1,000 subscribers with increased sending limits.

Three requirements: permission, relevance, and infrastructure. Only send to subscribers who explicitly opted in to receive your emails – never purchase email lists. Segment your audience so each group receives content relevant to their interests or behavior. Use a mass email service provider with proper authentication (SPF, DKIM, DMARC) and a monitored sender reputation. Sender handles the technical infrastructure automatically and includes compliance tools that enforce opt-in requirements and unsubscribe processing.

Email deliverability depends on three factors: sender authentication, sender reputation, and content quality. Authenticate your sending domain with SPF, DKIM, and DMARC records – Sender provides step-by-step configuration guides and verifies your setup before you send. Maintain your sender reputation by sending only to engaged subscribers and removing hard bounces promptly – Sender handles bounce processing automatically, as well as spam complaints above the 0.3% threshold that triggers throttling at major inbox providers. Avoid spam-trigger content patterns: excessive capitalization, misleading subject lines, and image-only emails with no text. Sender's pre-send checklist flags common deliverability risks before your campaign goes out.