Sumo

Sumo is the lead generation suite that democratized popups and email capture bars. The free plan is surprisingly generous — unlimited contacts and sends — making it a popular choice for mid-sized blogs and ecommerce sites.

Sumo is a lead generation and conversion optimization platform for websites. The main tools are email capture forms in various shapes: popups (with exit-intent, scroll trigger, time), sticky top bars, welcome mats (full screen), smart bar and inline forms. Each form is customizable in design and display rules — on which pages to show it, after how many seconds, to whom (new vs. returning visitors). The suite also includes social tools — share buttons, share counters — and an A/B testing feature to compare form variants. Integrations with major email marketing services (Mailchimp, ActiveCampaign, Klaviyo, ConvertKit and many others) automatically transfer collected contacts. The free plan is unusually generous: no limits on collected contacts or email sends via Sumo, making it a practical choice for those starting out. The Pro plan adds advanced features like content upgrade, advanced targeting and Sumo branding removal.

For bloggers, ecommerce sites and marketers who want to collect visitor emails with customizable popups and forms, with native integrations with major email marketing services.

Sumo has a permanent free plan with unlimited contacts and sends, including basic popups and main integrations but showing Sumo branding on forms. The Pro plan starts at $39 per month and removes branding, adds A/B testing, advanced targeting, content upgrade and priority support.