Sender is a Lithuanian-founded email marketing platform operated by UAB Sender.lt (Lvivo st. 25, Vilnius; company code 302820904, VAT LT100008985714). It targets SMBs, e-commerce, non-profits, and event organizers as a low-cost MailerLite alternative, with a Free Forever tier covering 2,500 subscribers and 15,000 emails/month, automation, landing pages, signup forms, a 1,600+ template library, and integrations for WordPress/WooCommerce/Shopify/PrestaShop/Zapier. The vendor reports more than 180,000 customers worldwide.
Where Sender falls short for procurement-grade buyers is transparency. The public privacy policy does not name specific sub-processors, does not disclose the hosting provider or data-centre location, and does not document a Standard Contractual Clauses or Data Privacy Framework basis for any US transfers; it only mentions "third parties...such as a credit card processing company" without identifying them. Dedicated /dpa/, /sub-processors/, and /security/ paths return 404, and the pricing page itself fails to render the Standard plan price (toggle visible across USD/EUR/GBP/AUD with a 30% annual discount). For a Lithuanian-incorporated vendor that is structurally EU-owned, this lack of disclosure is the single biggest compliance-score limiter.
Best fit: solopreneurs, small e-commerce shops, and creators who want a generous free tier and EU-incorporated billing, and don't require enterprise-grade compliance documentation. Mid-market and procurement-led buyers should look at MailerLite (LT, broader transparency), Brevo (FR, public DPA), or CleverReach (DE, ISO 27001 + EU-only customer-data hosting) instead until Sender publishes a sub-processors list and DPA.