Overview

Sender brings campaign creation, audience management, automation, landing pages, and transactional delivery into one platform. Teams can build messages with a drag-and-drop editor or HTML editor, then use workflows, personalization, segmentation, and analytics to manage campaigns. Built-in SMS broadens its reach beyond email.

Transactional emails can be sent through REST API or SMTP, with SPF, DKIM, and DMARC authentication. That makes Sender relevant to teams looking to handle both marketing and application-triggered email, though the plan limits still matter when estimating capacity.

Key features

Campaigns and automation: Email and SMS campaigns, workflow automation, audience segmentation, personalization, and A/B testing cover the core needs of campaign teams.
Lead capture: Landing pages, signup forms, and popups give teams several ways to grow an audience without relying only on existing contacts.
Transactional email: REST API and SMTP delivery, paired with SPF, DKIM, and DMARC authentication, support transactional sending alongside marketing campaigns.
Integrations: Official integrations include Shopify, WooCommerce, WordPress, PrestaShop, Magento, and Zapier. Connections can be native, use automatic imports, or rely on API tokens or configuration in an external platform.
Compliance and security: Automatic unsubscribe links, physical-address template variables, and double opt-in settings help with CAN-SPAM and GDPR requirements. Sender also operates a responsible disclosure program covering issues such as SQL injection, stored XSS, account takeover, and cross-account data access.

Pricing

Sender uses a freemium model. The paid plans shown are billed annually, and the displayed annual prices exclude a first-year discount.

Plan	Price	Included limits and terms
Free Forever	0.00 USD per free	1 seat, up to 2,500 subscribers, up to 15,000 emails per month, and Sender branding.
Standard	108.00 USD per year, billed annually	3 role-based seats, 500 subscribers, 6,000 emails per month; removes Sender branding.
Professional	180.00 USD per year, billed annually	10 role-based seats, 500 subscribers, 12,000 emails per month; removes Sender branding.
Enterprise	Custom pricing	Unlimited emails, a dedicated success manager, advanced user permissions, service level agreement, audit activity logs, and SSO (SAML v2).

Free Forever is the strongest fit for a solo sender who can accept branding: its subscriber allowance and monthly email cap exceed the smaller paid plans. Standard is aimed at small teams that need branding removed and three seats, but it permits only 500 subscribers and 6,000 emails monthly. Professional doubles the monthly email allowance and expands access to ten role-based seats without raising the subscriber ceiling, so it is more useful for a larger team than for a growing list. Enterprise is the tier for organizations needing unlimited email volume and administrative controls; its price is custom.

The headline paid starting price is $108/yr, but the plan comparison shows the limits behind it. Compare both subscriber count and sends against expected list growth before upgrading: the free tier allows more subscribers and emails than Standard or Professional, while including branding and only one seat.

Platforms

Sender is available on the web and through an API. It has no mobile app, though its features can be accessed in a mobile browser. Teams that require a dedicated mobile application should account for that gap.

Who it's for

Sender identifies small and growing businesses, ecommerce brands, B2B companies, creators, and nonprofits as its audience. Its combination of campaign tools, lead capture, SMS, and transactional delivery is most compelling for teams that want these functions alongside integrations with their store or CMS. A team with a larger subscriber base may find the paid-plan subscriber cap restrictive; a solo operation can start on Free Forever if Sender branding is acceptable.

Pros and cons

Pros

Broad coverage in one platform: Email, SMS, workflows, landing pages, forms, and transactional delivery serve both acquisition and ongoing communication needs.
Useful ecommerce and CMS connections: Shopify, WooCommerce, WordPress, PrestaShop, Magento, and Zapier are among the official integrations.
Free tier has substantial sending capacity: Up to 15,000 emails per month and 2,500 subscribers can support a modest program before branding becomes a deciding issue.
Paid plans remove branding and add team seats: Standard includes three role-based seats, and Professional includes ten.

Cons

Paid subscriber limits are low relative to the free tier: Both Standard and Professional show 500 subscribers, compared with 2,500 on Free Forever.
Free messages carry Sender branding: Teams sending to customers under their own brand may need a paid plan even when the free quotas suffice.
No dedicated mobile app: Mobile access depends on a browser.
Enterprise pricing is custom: Teams needing its unlimited email volume and governance controls must request pricing rather than compare a fixed listed price.

Alternatives

For teams comparing nonprofit-focused tools, see Nonprofit Email Marketing Software; broader comparisons include AI Email Marketing Software and Email Marketing Software.

AWeber is another freemium email option with API and web access; its free plan allows up to 500 subscribers and 3,000 monthly emails.
Action Network is a fit to compare for grassroots activism: it offers free tools for activists, with its Movement plan starting at $15.00 per month and usage-based email charges.
Donorbox is a fundraising-oriented option with web, API, Android, and iOS access; its free Standard plan has five team members, with platform fees of 2.95%–3.95% and processing fees applying.
Funraise offers a free plan for organizations raising under $1 million annually and custom-priced premium plans.
Givingtech is a free fundraising platform with no monthly, setup, or per-user fees, though donation transaction fees apply.
GetResponse is another freemium email platform with API, web, Android, and iOS access; its Starter plan lists unlimited monthly email sends and one custom automation workflow.
Blackbaud Financial Edge NXT is a paid platform with custom quotes based on organizational needs.
GivingFuel is a paid fundraising option with a Starter plan at $9.00 per month and a 2% platform fee.

Verdict

Sender is a sensible choice for a small business, ecommerce team, creator, or nonprofit that wants email, SMS, lead capture, and transactional delivery connected in one web-and-API platform. The free plan provides room to send, but branding and the sharp reduction in subscriber allowance on paid tiers deserve close attention. Choose Sender when its integrated toolset and listed connections suit your stack; look elsewhere if mobile-app access or higher paid subscriber limits are essential.

	Pombo	Sender
Free plan	Yes	Yes
Free trial	No	No
Paid from	$29/mo	$6.30/mo
Open source	No	No
Platforms	api, Web	api, Web
Free plan	Yes	Yes
Paid from	29 /mo	—
Email automation	Yes	Yes
Audience segmentation	Yes	Yes
Subscriber limit	—	500 contacts
Monthly send limit	—	6,000 emails/mo
Landing pages	—	Yes
A/B testing	—	Yes

Pombo vs Sender

Pombo

Sender